Oregons ‘Grape’

This is the time of year which is the most exciting in the garden. After a cold winter we wait with bated breath to see what has survived and even will thrive. I note some Rhododendrons seem to have smaller flowers and the Tulips are finally beginning to show their buds. One plant I associate with spring is Mahonia aquifolium (Oregon Grape) which is bursting forth with its bright fragrant flowers.

The Oregon Grape(Mahonia aquifolium) here is a welcome addition to this spring garden of mixed bulbs and native plants.

Oregon Grape is a shrub which is from the west coast of British Columbia south into northern California west of the Cascade Mountains where this plant is generally found as an understory plant to trees such as Douglas Fir and here Garry Oaks. Mahonia was named after Bernard McMahon (1775-1816) who is said to have been the first ‘nurseryman’ in North America, he published the first plant catalogue and the book “American Gardeners’ Calender’  He was the curator of the plants of the Lewis and Clark collection of plants.  Thomas Nuttall honored his friend by using his name as “Mahonia’  for naming a plant (Mahonia nervosa) in the collection.

The bright flowers of Mahonia aquifolium contrast nicely with wine tinted evergreen foliage.

The leaves( and leaflets) of the Oregon Grape look similar to that of common Holly (Ilex aquifolium) but are larger, thinner and take on maroon and red tints in winter cold. This past winter was colder than normal here and the red tints are very evident on many plant here. Oregon Grape are well-known to the native people here and have in the past been used for medicinal and food uses.  The roots were used to make a tonic which was used to counteract weariness, loss of appetite  and other similar maladies. the roots contain the alkaloid berberine which is found in  ‘Goldenseal’ and has anti-inflamitory and anti bacterial properties. The fruit was as mild laxative. As a food the berries were sometimes mixed with other sweeter berries to make them more palatable. The fruit is very bitter until touched by frost and then can be used for making  jelly. Another way this plant has been used is for dying items, the roots have distinctive yellow sap and the berries provide purple coloring.

Oregon Grape (Mahonia aquifolium) produced copius crops of blue fruit which are eaten by birds after it has been touched by frost to sweeten it.

Mahonia aquifolium is much used in landscapes today and is often seen as a barrier plant in parking lots where it often is neglected and abused, there are better plants for that purpose. I like to see it used in more creative ways. One of the more interesting uses I have seen is as a background planting to Hydrangeas at Finnerty Gardens in Victoria. The garden has a collection of Hydrangeas which are dormant when our lovely Oregon Grape blooms. Oregon Grape works as winter and early spring interest and then the Hydrangea will take over for the late spring into autumn with a consistent evergreen background to show it off.

Here at Finnerty Gardens the Mahonia aquifolium (Oregon Grape) will bloom while the Hydrangea shrubs are 'leafing' out in front.

Oregon Grape is an easy plant to grow if it is given the right conditions to grow in. Mahonia aquifolium likes part sun to full shade with the only exceptions in more northern areas where light is not as strong as in the south. For better flower and fruit production give it better light.  It grows best in moist, rich, well-drained soil which is more acidic than alkaline. It does poorly on thin, compacted and clay soils which stay wet and are poorly drained. Here it grows under the light shade of deciduous trees and mixed with other shrubs. It is best to place these plants where they will avoid the drying winds of winter which can do much damage to broad-leaved evergreens here. Most of the Oregon Grape I have seen here overwintered well with little damage, the added bonus was richer maroon tints to the foliage from the winter cold.

The maroon tints of the foliage of Mahonia aquifolium (Oregon Grape) were quite spectacular this spring.

Mahonia aquifolium is a slow-growing multi-stemmed shrub which over time can grow to be well over 2 m. (6 ft.) tall. With the branches generally being very ascending , this shrub tends to have a narrow profile. The plant can easily be managed by removing branches from the base. Use this shrub in your native garden or in wilder places which might be a little out of the way. The leaves are prickly so keep it away from narrow paths or tight areas where you might brush up against it. Mahonia aquifolium is well used in mass planting or a specimen. It attracts bees by providing an early source of honey when there might be little available (the flowers are honey scented as well).  It is known to hybridise with other Mahonia species and these crosses can give varied results in height and sprawling habit.

I find the variation in the flower panicles of Mahonia aquifolium (Oregon Grape) interesting, some are stumpy like this one while others are loose and open like the 2nd picture in this article.

Mahonia is a much loved plant and has been adopted as the state plant of Oregon which is found between California and Washington. It has many appealing atributes to make a good garden plant which should be seen more ofte. There are 12 Mahonia species in North America and some of these have been listed as noxious weeds, I think that there might be some confusion in listing this species there.

 

Links a’plenty for you:

Washington State Native Plant Society page on the plant: http://www.wnps.org/landscaping/herbarium/pages/mahonia-aquifolium.html

The ‘Wiki’ page is interesting: http://en.wikipedia.org/wiki/Oregon-grape

Bernard McMahon and his contribution to gardening in early America: http://www.monticello.org/site/house-and-gardens/bernard-mcmahon

……….Hope to see you here again very soon………

 

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A Beacon of Yellow Flashing in the Mists.

At this time of the year the seasons are changing from winter to spring and with it comes unstable weather. One minute it is bright and sunny and the next it is almost dark and poring with rain, it is a challenge to get out into the garden to work. At this time I go for a quick walk in the park between rain showers and in a spot of light near the evergreen trees is a bright Rhododendron lutescens shining in the distance. Its pale buttery yellow flowers are almost unreal and beckon me to come closer.

Rhododendron lutescens is a delicate plant with the bright sunny flowers.

Like many of our favorite plants Rhododendron lutescens comes from the treasure trove of China. The plant is found in north-east Yunnan, Sichuan, Hubei and Guizhou where is grows on the hillsides, thickets, mixed forest and limestone slopes.  It grows at elevations of 1700 to 2000 m (5600- 6600 ft.) . In China it is called Huang hua du juan.

The brilliantly colored flowers of Rhododendron lutescens are a beacon of light in the garden at this time of the year.

Rhododendron lutescens was discovered by Pere Jean Marie Delavay(1834-1895) in 1886 who was stationed in Kunming, Yunnan at that time. He was one of the important French Jesuit missionary collectors who explored China and other parts of the world and sent botanical samples(herbarium collections in this case) back to be identified and named by scholars at the National Museum of Natural History in Paris. When these collections were received in Paris Botanist Adrien Franchet would study them and classify the new plant material.  E.H. Wilson recollected the plant when he was working James Veitch  & Sons Nursery and  it was re-introduced in 1904.

There are 2 Rhododendron lutescens found at Finnerty Gardens as well as 2 at Playfair Park.

There are 2 leaf forms(one being narrower than the other) known of  Rhododendron lutescens although they do not seem to be recognized by specific names. Rhododendron lutescens ‘Bagshot Sands’ is a form of the species which is said to have stronger primrose yellow colored flowers. A notable feature of the species is the exquisite coloring of new foliage which can take on an amazingly deep wine red coloring, this appears to happen after the flowering has occurred.  With the yellow flower color, fine delicate leaves and early bloom time, Rhododendron lutescens has been used for crossing with other species to create new hybrids. Several are quite well-known such as ‘Bo Peep’ with its creamy flowers and “Goosander’ which has larger buttery yellow flowers slightly flushed with coral on their backsides. Both of these named hybrids are small in stature and are worth having in any garden.

Rhododendron 'Goosander' shows a similar yellow coloring of parent Rhododendron lutescens.

Rhododendron lutescens is a graceful plant which deserves to be better known than it is. It grows best in a location with dappled light or spots of sun as the flowering will be better and leaf color more deep.It likes loamy to slightly sandy soil which is slightly acidic but is tolerant to more neutral qualities as long as it is not too clay rich.  These plants like good drainage and are somewhat drought tolerant. Like all Rhododendrons it has shallow root fine fibrous roots which do not like to compete with other plants, therefore mulch or a groundcover may be the best thing for under the plant. It should be sheltered from drying winter winds.

The flowers of Rhododendron lutescens vary in the yellow coloring from very pale to deeper shades and sometimes appear almost greenish.

Rhododendron lutescens might be hard to find, check at a specialist nursery or society sales. It is fairly hardy and tolerates temperatures down to at least -10 c. (4 f.). It can grow to a reported 5.5 m. (18 ft.) tall and a narrower width often  a multi-stemmed tree form with age. Best placement is in shrub borders, winter gardens, for early spring interest or specimen plantings. it can be mass planted and even is used as an informal hedge in some places.

Some beacons of information about this plant:

The most informative page about this plant: http://www.aussiegardening.com.au/findplants/plant/Rhododendron_lutescens

UBC has an interesting picture and info about the plant: http://www.ubcbotanicalgarden.org/potd/2008/04/rhododendron_lutescens_1.php

My page which tells the story of Pere Jean Marie Delavay and another of his wonderful dicoveries: https://namethatplant.wordpress.com/2010/05/17/delavays-maroon/

……..Until we meet here along the garden path, soon I hope………

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Magenta, Just the Color to Brighten Up Your Garden.

I am always delighted when I come across plants which are new to me and are extra hardy, this is because I grew up in a much colder place. Many species will not live in a place that regularly visits temperature below -25 c. (-13 f.). It is particularly cum with interesting to find shrubs which are have colorful large flowers which bloom very early in the year and are not damaged by frost. One species which has been worked on to create more cold tolerant plants is the rhododendron. One of the important species which has been long known and is important in developing hardier hybrids with attractive flowers is Rhododenron dauricum (Dahurian Rhododendron) It has brightly colored flowered at this time of the year and is one of the toughest of the species.

The Dahurian Rhododendron (Rhododendron dauricum) is a bright beacon in early spring.

Rhododendron dauricum comes form a fairly wide area of northern Asia. Its path begins in the Altai mountains of eastern Siberia and moves east all the way to the Sakalin Island and into Hokkaido – the most northern main Japanese island. The species is found in Mongolia,  northern China and in through North and South Korea as well.  As the plant covers such a wide area there is some variability in color and form which has added some confusion in classification. Linnaeus first described this Rhododendron in 1753 in his text Species Plantarium. He got his specimen from the botanical garden in St Petersburg Russia. It is possible that the sample had been collected by Messerschmidt in 1736 and already described by Johann Amman in 1739.

This is one of several Rhododendron dauricum found at Finnerty Gardens.

Rhododendron growers are always trying to broaden the range of their plants in many ways such as broader colro range, larger flowers, hardiness and bloom time. Rhododendron has played an important roll in making the species more avaialbel to those living in colder climate. Rhododendron dauricum is often used as pollen parent with other species to add cold hardiness to the hoped for hybrids. Probalby the most famous hybrid is  called ‘PJM'(PJ Mezitt’) and is a mid pink color, it has smaller leaves which densely clads which slowly grows to about 2m.(6ft.). It was developed at Weston Nursery in Massetussets by Peter John Mezitt (PJM). He crossed dauricum with Rhododendron minus to creat this grest new plant. Other selection were also made but have not become so famous.

2 lesser known dauricum hybrids are Rhododendron 'Olga Mezitt' in the background and Rhododendron 'Black Satin' in the upper left corner.

Rhododendron dauricum is classified as being semi-evergreen which is why most of the leaves are not seen in the winter,and the flowers are even more noticeable when they are in bloom. Here most winters the plants do look barren except for a few leaves and the buds which is tidy in appearance. This plant has smaller leaves and fairly fine stems and has an open airy quality about it. Most of the plants I have seen around here are still fairly young and many are taller than wide at the moment.

This large Dahurian Rhododendron is found at Finnerty Gardens and the largest one at the gardens.

Rhododendrons are fairly easy to grow and this species is also easy. Rhododendron dauricum likes acidic moist soil which is well drained. Best placement is in part or dappled shade with some protection from bright summers sun and drying winds. I have seen these plants grow in quite deep shade and still put on a grest floral display at this time of the year.These plants can be used in a variety of ways such as massed, as an accent or specimen in a winter garden or in woodland settings. The floral color will draw your eye to wherever you choose to grow this plant.

The small vibrant flowers of Rhododendron dauricum pack a bright punch on gloomy late winter days here.

Dahurian Rhododendrons grow to a fairly large 2m.(6ft.) by the same width.  Rhododendron dauricum is rated as being zone 3b or -37c.(-35f.). They are rated as H4 or the hardiest of Rhododendrons. I have read notes from central  Alberta to Newfoundland of how well these plants grow in the extreme conditions of different parts of Canada. If you live in a colder area this is one plant you must try to find, I am sure with a little attention this plant will give you years of pleasure.

Some Dahurian links for you:

Where is Dauria:http://en.wikipedia.org/wiki/Transbaikal

An article about Dauricum hybrids which are grown here:http://www.rosebay.org/chapterweb/specdaur.htm

A technical description of the plant is here: http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200016392

Information about the PJM group of Rhododendrons: http://www.hort.uconn.edu/plants/r/rhopjm/rhopjm1.html

……..Hope you wander this way soon……

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An Odd Couple For The Iris Family.

Another grey week and another plant hunt for something special. Usually I have a list of plants in mind but right now it is hard because some of the plants I wanted to do were damaged by an unusually hard freeze which came in early November last year. At that time many of the plants were not hardened off for the winter with the damage especially seen by broad-leaved evergreens which have much browned and dead foliage now. In my wandering last week I stumbled upon two plants of the same family which are stars at this time of the year. They are the Algerian Iris (Iris unguicularis) and the Stinking or Gladwyn Iris (Iris foetidissima). They are the stars for different reasons as you will see!

Winter or Algerian Iris (Iris unguicularis) is sometimes incorrectly labeled by its old name of Iris stylosa.

The first stop we make is with the Algerian or Winter Iris with its lovely large violet blooms. It was first described by Botanist/clergyman  Jean Louis Marie Pioret (1755-1834) in his journal ‘Voyage et Barbarie’ in 1789.  He had been sent to Algeria by Louis XVI between 1785-6 to study the flora. The lovely Iris is more widespread and found in area from Algeria and Tunisia across north Africa into Turkey, Greece Crete and Malta. In the vast area it is known to live int there is some variation in color and form.

The type of Iris unguicularis I have found in Victoria seems to be the 'Algerian' form which has the largest flowers of the species.

Algerian Iris produce new leaves in late spring and through the summer. Often you can clip the old leave edges back when they get looking tattered. Iris unguicularis likes the sunniest, driest spot in the garden with the grittiest soil. At Government House in Victoria the plants are perfectly place in the terrace garden which is on a southern exposed rock-face.  The warmer and drier the summer the more blossoms will be produced.  One thing about these plants is they hate to be moved or have their roots disturbed in any way.

A just opened Algerian Iris in the late afternoon sun has delicate coloring and scent.

The Gladwyn Iris is from more northern areas from southern England, Ireland through Portugal, Spain Canary Island on to Italy and finally the island of Malta.

The Gladwyn Iris (Iris foetidissma) is more famous for its brightly colored seeds which are seen during the winter months here.

The ‘Stinking Iris has gained an unfair reputation from its name. One has to crush the leaves and the flower to obtain even a faintly unpleasant scent. Iris foetidissima is a plant which has long been with us. It blooms in the traditional Iris time of late May and June, but, the flowers are small and often hidden in the foliage. The colors range from a creamy ochre into plummy shades.

The flowers of Iris foetidissima are often hidden in the plants foliage.

The Gladwyn Iris is a plant of the woodlands, hedgerows, scrubs and cliff edges and other rocky sites. It is a plant which likes chalky and limestone  heavy locations. Gladwyn Iris can grow in the sun or dappled shade and like average soil. They like sufficient water when they are growing in the spring and then dry conditions the rest of the year.After blooming it produces larger than average seed pods which ripen through the summer and into early winter when they burst. Inside the pods are usually bright orange seeds which remain colorful throughout the winter. The other day I noticed pods recently opened and others still green and waiting to split. Just like the flowers there are other known seed colors which are sought after and they range from golden yellows to creams and white. Probably the most want of the Gladwyn Iris is Iris foetidissima ‘Variegata’ with beautifully uniform cream stripes running up the leaves.

The Variegated Gladwyn Iris (Iris foetidissma 'Variegata') is most sought after, as you see they are stunning in dappled location at Glendale Garden.

Algerian and Gladwyn Iris are about the same height 45-60cm.(12-18 in.) and width They also share the same temperature tolerance to 15 c. (5 f.) or zones 7 through 9. Both plants are drought tolerant when they have been established. They are rabbit and deer resistant but can be damaged by slugs and snails. They make excellent specimens, accents s, mass evergreen plantings and work well in containers. Both of these species are not easy to find in plant centres or garden shops, the best bet would be to find them at garden sales or from specialty Iris growers.

Gladwyn Iris on the upper left and Algerian Iris on the lower right.

This Odd Couple of the Irises:

Pacific Bulb Society has interesting note on both plants on this page, look down the page to find the species you are interested in: http://www.pacificbulbsociety.org/pbswiki/index.php/BeardlessIrises

Algerian Iris:

How to grow: http://www.telegraph.co.uk/gardening/4208463/How-to-Grow-Iris-unguicularis.html

Gladwyn Iris:

Wild in Malta: http://maltawildplants.com/IRID/Iris_foetidissima.php

……See you soon when we travel the path of plants again…..

 

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Finding x Ericsmithii.

Although it has been unusually cool and wet already this winter it is surprising how much is going on in the garden right now. Already the buds on many shrubs are stirring and growing larger and I have seen germinated seedlings with their first leaves emerging from places. The earliest blooming plants are starting to show up. One group of plants which never let us down are Hellebores and several species and hybrids are blooming or are in bud. One of the more interesting and fairly new to this area are the Helleborus x ericsmithii group. This plant selection was formerly known as Helleborus x nigerstern.

Helleborus x ericsmithii brings together the best genes of 3 species into a spectacular plant.

Helleborus x ericsmithii is named after the important plantsman and propagator Eric Smith (1917-1986) who was the first person to successfully cross Helleborus niger( the Christmas Rose) with Helleborus x sternii ((H.argutifolius x lividus).

Here we have Helleborus niger on the left, H. argutifolius on the lower right with H.lividus leaves in the background.

Eric Smith grew up in South Hampshire England, he came from a middle class family. In 1940 he joined the army and was stationed for part of his time in Italy. After the war he was educated as an architect and worked as an assistant for several year. He always had a love for plant and joined the famous nursery Hilliers in Winchester from 1961 to 1965. While at Hilliers he worked as a propagator and first made the cross which lead to the group of plants we know as Helleborus x ericsmithii today. Later in the 1960s he would leave Hilliers and continue developing many other plants which are now associated with him. These plants would include many Hostas, Bergenias, Anemones and Kniphofias.

A fine combination of plants found at Government House with Helleborus x ericsmithii being the star in earliest spring.

Each of the 3 species of Hellebore brought something important to the new Helleborus x ericsmithii.  Helleborus niger brought the largest flowers. Helleborus argutifolius brought much-needed tolerance for the cold, green shades to the flower color range and toughness to the leaves.  Helleborus lividus brought pink tones to the flower coloring and improvement in the leaves with wonderful silver veins which new varieties are showing off more than the past.

The pink and green shades blend together with the cream into a tapestry of tones in Helleborus x ericsmithii.

Helleborus  x ericsmithii brings us a long blooming season which usually begins here in early January and lasts through March. As the flowers are somewhat papery they generally can stand up well to the wet weather. The only thing one sees is soil which may splash up on the lower flowers. The leaves may sometimes become damaged when we have a particularly early frost such as the one we had in November of last year. Have no fear new leaves will appear to replace any of the damaged ones.

This recently planted Helleborus x ericsmithii and will with time grow to be a formidable plant with countless blossoms.

Helleborus x ericsmithii is an easily grown plant and can be used in many ways as long as you fulfill its basic needs.  This is a plant which likes rich deep soil that is well-drained, it does not like to have overly wet roots as this can lead to rot. In the area I live in the Pacific north-west this plant does best in about half day sun, dappled situations are the best. In hotter and drier climates it will need more shade and more frequent watering.  Another thing to keep in mind is all Hellebores hate having their roots disturbed and sulk or sometimes die, therefore, carefully choose where you are going to place them and try not to move it. Always remove spent leaves and flowers to keep the area clean.

Several Helleborus x ericsmithii plants make an excellent container planting for winter color.

Helleborus x ericsmithii are used in many ways, in containers, as winter color and in the winter garden, as a specimen or accent or a border. These plants grow 20-25cm. (8-10 in.) height and grow into a clump up to 30-40cm (12-15in) wide making it an excellent addition to the rock or alpine garden. These plants are hardy to about -15 c.(5 f.) or a little colder with protection.These plants have few pests other than Aphids which may appear when the flowers are young and tender.  These Hellebores are said to be deer and rabbit resistant.

These aged flowers of Helleborus x ericsmithii will soon be finished as they are sterile and do not set viable seed.

Propagation of Helleborus x ericsmithii is done by tissue culture or you can carefully divide your plant after is has finished blooming. Be careful when dividing the plants and do not damage the roots. Look at your nearby nursery or garden centre for many newer varieties which have a broader range of flower colors and variegation in the leaves. Many of the new plants are spectacular and can be hard to track down.

Hunting for this Hellebore:

The book about Hellebore is a wealth of information: http://grahamrice.com/hellebore/species/ericsmithii/index.html

One of the more commonly found forms you can find at your garden centre: http://www.perennials.com/seeplant.html?item=1.256.760

Information on Eric Smith is hard to find: http://books.google.ca/books?id=6idvRAeex8IC&pg=PA165&lpg=PA165&dq=propagator+eric+smith+hellebores&source=bl&ots=XKUbK-HBxl&sig=O0cSVUj4SqZxf08pAkCNmWnjT6A&hl=en&ei=NU8zTdyyM5TmsQPkwOmtBQ&sa=X&oi=book_result&ct=result&resnum=8&ved=0CEMQ6AEwBzgK#v=onepage&q=propagator%20eric%20smith%20hellebores&f=false

……Until we meet again in the sun or showers…..

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Heavenly in the Garden.

Back to school, those are dreaded words for some, a relief for others and the beginning of a new chapter in life for many more. I must admit I did not like grade school. It was not until later when I had a break from the grind of it, had more perspective and experience in life that I enjoyed it more. Now I think about i more fondly look back at my time in school especially the time I was in Hort. school learning so many new things which I use all the time now. Learning the plants back then was more of a challenge, now it is adverture which takes me across the world and back in time. I first saw Nandina domestica (Heavenly Bamboo or Sacred Bamboo) at Van Duesen Gardens and over the years have always loved it’s simple elegant beauty.

Heavenly Bamboo is a triple treat with wonderful foliage, flowers and bright red berries which appear in the fall.

Nandina domestica is a plant which comes to us from Asia, there it is found in central Northern India, China and Japan. In Japan it is known as Nantzen (meaning southern sky) is derived from the chinese name(southern heaven)and our latin name is from it.  Nandina is strongly connected with the new year in both China and Japan, in China it is associated with the kitchen god Zhao Jun(Zhen) who is the most important domestic god and protects the hearth and family.

The light delicate foliage and compact habit makes Heavenly Bamboo very popular here.

In Japan it is especially popular and is often seen at the entrances of houses and is  also used during the holiday season of late December and January. Here it seen in traditional Kadumatsu decorations which are placed in pairs at the front door of  the home. It is also in Japan where Carl Peter Thunberg(1743-1828) first documented Nandina domestica while he was there in 1775-76. His name is one of the most important associated with botanical plants in Japan and he named many of the best known ones of today.

A good crop of berries is seen with this planting of Nandina domestica at U.B.C. Botanical Gardens in Vancouver.

Heavenly Bamboo was introduced to the gardening public in 1804. Also back in Japan at that time there were new forms being discovered and it was becoming popular there as a bonsai subject.Some of the new forms had narrower leaves and lent themselves to Bonsai. By the late 1800s’ nearly 200 cultivars had been named and catalogued there. Sadly many of these forms have been lost although recently many new color forms have been selected by growers in Europe and North America.

Nandina domestica is often mass planted or used as informal hedging here.

Here we have come to love Heavenly Bamboo for its versatility, beauty and color throughout the year. It tolerates any type of soil as long as it is well-drained. It is not fussy about light and can take the full sun to full shade although it is best with some protection from harsh midday sun in the summer especially in drier and more southern areas that here. Nandina domestica is tolerant of fairly dry areas as long as it is sheltered from drying winds like most other evergreens. This plant grows by producing suckers from the base, this over time will produce a dense clump. Pruning can be done to remove damaged parts and to thin it out if it gets overgrown.

The leaves are very large and tri-pinnate which gives 'Heavenly Bamboo' its common name.

There are many new forms of Nandina domestica which have recently appeared on the market. They range from the dwarfs  such as Nandina domestica ‘Nana Purpurea’ which grows 60cm(2 ft) which I think are best in containers as they do not have the elegant form as the full-sized ones. Nandina domestica ‘Plum Passion’ has great plum tinted blue-green foliage and grows 2m(6.5ft) by 90cm(3 ft) wide which is the normal size for Nandinas. There are also exciting golden-leaved  and yellow and white-fruited varieties which can be found so be on the lookout for more interesting varieties.

This dwarf Nandina would be best suited in a nice container.

Nandinas are fairly hardy growing in zones 6 though 10 or-10c.(14f.) with little damage as long as they are in a spot shelter from drying winds. If they do lose their leaves in a hard winter they often come back quickly with new stems coming up from the base, the old ones can be removed. In areas where these plants have become a pest it is important to remove the spent flowers so they do not set seed. Speaking of seed, this is a common way to increase your crop of plants, germination is best if sown fresh with all pulp removed from the berries. The other method of propagation is by semi-ripe cuttings in mid spring.

This Nandina domestica is well palced in a sheltered location with some sun.

Nandina domestica can be used in a variety of ways, as an informal hedge, mass planted, as an accent or for seasonal color. You will see it used in many public gardens as well as better institutional setting as it is a much more manageable substitute for true Bamboos.It fit well in asian, Japanese, understory or dappled and modern gardens very well. The graceful feeling of the plant is much appreciated by gardeners everywhere.

Searching for Heavenly Bamboo on earth:

The interesting forms grown in Japan: http://homepage3.nifty.com/plantsandjapan/page105.html

Carl Peter Thunberg: http://en.wikipedia.org/wiki/Carl_Peter_Thunberg

Kadumatsu: http://www.humanflowerproject.com/index.php/weblog/comments/kadomatsu_welcoming_japans_new_year/

Propagation by seed: http://www.ubcbotanicalgarden.org/forums/showthread.php?t=16900

Paghat on Nandina: http://www.paghat.com/nandina2.html

Hope to see you soon…..here again.

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The Grand Madame of Southern Trees.

One type of plant which I really did not know when I was growing up were broad-leaved evergreens. You know the kind I mean, the leaved trees and shrubs which do not shed their foliage in autumn. I grew up in an area where this kind of plant had to grow below the snow line, the only native plant which fitted into this category were less than 30cm(12in.) high. Here in the mild west coast there are many broad-leaved evergreens, most are shrubs with only a few trees. One of these trees which I first saw in Vancouver was the impressive and beautiful Magnolia grandiflora (Southern Magnolia).

Magnolia grandiflora iss named for it's huge flowers which can be up to 30cm(12in) in diameter.

Southern Magnolias are indeed true southerners as they grow in the south-eastern United States from Florida up the coast to Virgina and west through Arkansas and Texas. It is a wide area and is found in a variety of locations which all usually have increased moisture. Often they are found on the edges of water, and swamps, along slopes and ravines and in floodplains, all these sites are good sources of water which are quickly drained.

Some of my relative are impressed with the massive flowers of the Southern Magnolia seen at Finnerty Gardens.

Magnolia grandiflora was first brought to the garden world in 1726 by Mark Catesby(1682-1749). he was an English naturalist and always had an interest in collecting oddities.  To this end he travelled to Virginia to visit his sister in 1712. While he was there he collected seed and plant samples which he brought back to a nursery in London in 1719. In 1722  he was selected by the Royal Society to collect plant samples in Carolina. Catesby again came to North American and collected  plant and bird samples from the east coast and the West Indies. From his samples he later published ‘Natural History’ in folio style between 1733 and 1746. This folio was the first of its kind and was very influential. Many of his specimens ended up in the collection Hans Sloane who later gave everything to the British Museum.

The foliage of the Southern Magnolia is beautiful.

Magnolia grandiflora has in the past been an important source of timber and was used in many ways;  for furniture, boxes, venetian blinds, sashes, doors and veneers. The characteristic qualities of the wood are that it is fairly hard, stiff and has little shrinkage.  The wood has a pleasing color with the sapwood being of a pale yellow tone and the heartwood being a deeper brown. The tree itself is one of several Magnolia species which were used in North America in a medicinal way. The foliage is now used by florists who appreciate its sturdy quality and the beautiful rust colored indumentum on the undersides of the leaves.

Magnolia grandiflora is the state tree and flower of Mississippi and is the state flower of Louisiana.

Magnolias are a very ancient plant and their seed heads have an almost reptilian quality to them, although here I have never seen ripened seed of Magnolia grandiflora. They seem to have evolved before bees existed and the flowers are designed to be pollinated by beetles. The name ‘Magnolia’ refers to Pierre Magnol who was a French Botanist who was the first person to use the concept of plant families for classification purposes. ‘Grandiflora’ not surprisingly refers to the giant sized flowers.

The unusual seed head of Magnolia grandiflora.

We are lucky to be able to grow such interesting plant like the Southern Magnolia and to see their magnificent blooms. These are trees which can grow to 27m(90ft) in the wild but rarely gets anywhere near that in a garden setting. The tree developes an attractive pyramidal form as it ages which makes it a good choice for the home garden. My sister has a postage-stamp size front yard and here their Magnolia grandiflora fits in beautifully. Some people complain about the fact that it sheds its leaves slowly during the year, this is common for all broad-leaved evergreens.

Magnolia grandiflora flowers have a delicate citrusy scent which is fresh and elusive in the garden.

When choosing a site for your Southern Magnolia you need to select your site carefully. This will over time become a large tree, so not too close to a building is best. They have very brittle roots so only plant this tree only once, do not replant it later if at all possible as it might not survive the move. The roots are shallow and do not like to be damaged, care must be taken when planting under this type of tree, a simple groundcover or even grass is best. They like a nutrient rich, well draining soil. Pruning can be done during early spring but rarely need it except for shaping or removal of damaged limbs. Few pests or disease effect this tree or damage its foliage.

This avenue of Southen Magnolias is found off of Rock Street and leads to the top of Playfair Park in Saanich.

Magnolia grandiflora are said to be hardy to -20c(-10f) or rated  at zone (6)7-11. There are forms which are especially hardy and grow in colder areas such as Ontario and Ohio, ask at your local nursery for forms which are best for your site. In the colder zones they can be damaged by drying winds when the ground is frozen as they are unable to get water to their leaves, this is a common problem for broad-leaved evergreens. Choosing a site which is protected from these winds will help solving the problem.

On the Southern Magnolia Route:

Wiki has a lot of interesting information: http://en.wikipedia.org/wiki/Magnolia_grandiflora

You will enjoy the work of Mark Catesby:  http://en.wikipedia.org/wiki/Mark_Catesby

Check out my article about ‘Million Year Old Magnolias’:  https://namethatplant.wordpress.com/2009/04/20/multi-million-year-old-magnolias/

Botanical scientific information about this tree: http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200008470

Until I see you on my blog again….soon I hope!

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Looking at Loderi.

When I was working at Park & Tilford  Gardens during my practicum I worked rotations in all parts of the gardens there. Each section had different challenges and things to learn. Everyday we would have to start with the rotine things like skimming the pool for leaves or deadheading the roses, one day as I cleaned in the display garden I smelled the most wonderful perfume coming from a plant. Being curious I had to find out where the scent was coming from and to my surprise it came from a huge white rhododendron. I asked about this plant and found out it was one of the famous Loderi Rhododendrons‘, ‘Loders White’which I have not seen since that time. Here in Victoria I have discovered several more all with the same delicious scent.

Rhododendron x 'Loderi Venus' has the most sumptuous of coloring in the Loderi group.

‘Loderi’ Rhododendron where developed by Sir Edmund Loder (1849-1920) who bought Leonardslee Estate(St. Leonard’s forest) in 1889 from his wifes family.  Sir Edmund then started to plant the estate with a collection of plants which included everything from vegetables and fruit for household use  as well as trees and shrubs. It is here that he did his crossing of two well known species of Rhododendron to produce what we know as Loder Rhododendrons.

Rhododendron 'King George' is considered to be the best of the 'Loder' Rhododendrons.

‘Loderi’ Rhododendrons were developed by crossing the pollen(male)of species griffithianum with fortunei (female). The species ‘griffithianum which is very tender contributed the extremely large flowers and often the beautiful bark, and the ‘fortunei’ added its scent, hardiness and more vigorous growth. Both of these species had already been used a great deal for hybridizing as they were some of the first to be brought to Europe.

The species 'fortunei' contributed color, fragrance, vigor and cold hardiness to Loderi Rhododendrons.

From the original crosses made in 1901 a number of selections of ‘Loderi’ Rhododendrons were made and named. All of the plants are extremely large growing and obtain tree-like size.  Colors range from pure white through creamy shades into a mid pink. All have been award numerous medals in the garden world including Awards of Merit(AM), First Class Certificates(FCC) and Awards of Garden Merit(AGM) which all come from the Royal Horticultal Society(RHS).  Here in Victoria there are several places to view these plant  with the best being Finnerty Gardens. Also look in the Novitiate Garden at St. Ann’s Academy and Glendale Gardens for other forms.

The attractive 'Loderi' bark is seen here in the collection at Finnerty Gardens.

‘Loderi’ Rhododendrons are big plants with some attaining over 10m(30ft) with time, they are also as wide. You will need a large space which is not near a building for them to grow their best. Here they can be grown in almost full sun with no damage seen, in other areas where light is stronger a woodland setting would be more appropriate. Rhododendrons likes acidic soils which are slightly damp as they have shallow roots. Mulching every year is also a good idea. Loderi Rhododendrons are rated as tolerating -15c(5f) at the extreme. Propagation is by cuttings which are slow to produce.

Every year People come to Finnerty Garden to photograph the beautiful 'Miss Josephine Firth', a massive Loderi Rhododendron.

The flowers of Rhododendron 'Miss Josephine Firth' fade to almost white as they age.

Notes to Look at:

History of Leonardsee and Loders’ Nursery:http://www.leonardsleenursery.com/history

Rhododendron fortunei:http://www.rosebay.org/chapterweb/specfort.htm

Rhododendron griffithianum: http://www.rhododendron.org/descriptionS_taxon.asp?ID=17

Until we meet again along the garden path….

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Theres This Laurustinus in My Ear!

Many parking lots and other institutions have parking lots and landscaping which is populated by tough hardy and often broadleaved evergreen plants. These plants have to be attractive and durable and tolerate being neglected. Many of these plants are just green and a background with no real features. A select few are standouts and should be seen in other settings more often. Viburnum tinus (Laurustinus) is a great plant which is attractive and versatile in many ways.

Viburnum tinus(Laurustinus) is used as an informal hedge outside this fence.

Viburnum tinus has been in cultivation for a long time. This is probably do to the fact that is comes from the Mediterranean, an area which is one of the first areas where gardens were developed for pleasure. We do know that it was brought to Great Britain at least 500 years ago and many old plants are found there. It’s evergreen nature and sweet scented flowers which bloom late in the year probably attracted attention to it for use as a decorative plant.

During the winter Laurustinus is a great show which it's many heads of rosey buds waiting to open.

The common name Laurustinus is thought to refer to the leaves which resemble those of the Bay Tree(Laurus nobilis). The Latin name Viburnum refers to this genus of plant but is thought not to refer to this particular species. the Latin meaning of ‘tinus’ is said to be the true ‘ancient’ name of this plant. It seems to me that Laurustinus is best described as a ‘Bay-leaved Viburnum’.

Although the flowers of Viburnum tinus are small, they are highly fragrant.

Viburnums are from the Carpifoliaceae family which includes many fragrant plants such as Honeysuckles, Beautybush and Twinflower. Laurustinus has a spicy sweet floral scent when in bloom. Other people say that it can have an unpleasant scent which may come from the leaves when they are growing early in the year. I know that the wild Viburnum which grows around here gives off an acidic scent in the fall when it sheds its leaves, it is a scent that I associate with autumn and look forward to experiencing every year. Scent is such a personal thing, one persons perfume is anothers most hated smell!

Often you will see Viburnum tinus blooming when there still are fruit on the bush.

Viburnum tinus have attractive drupes(fruit) which have a metallic steely blue black color, they are more sporadic and often do not develop well. The fruit of this species is not known to be edible and are said to cause stomach upset, this probably is do to the high acid content. The glossy smooth edged leaves, attractive berries and fragrant but delicate flowers make this a showy plant all year round. the added bonus is Laurustinus is easy to grow too.

The glossy leaves and red tints of the flower buds make Laurustinus attractive in the winter.

Growing Laurustinus is easy. They need well drained soil which is fertile and on the gritty side as they do not like overly wet roots. They do the best in a sunny location for the best flowering. They also tolerate dappled or shaded sites as well. they also are tolerant of ocean exposure and more chalky sites. They can grow to between 2 and 4.5m(6- 15ft)  in height and width depending on the variety you choose. This is a densely leaved plant which is excellent mass planting, informal hedges, winter gardens, shrub borders or containers. It is best to prune it for shape after it has finished blooming. There are several named forms which are more compact and one which is variegated, but is less cold tolerant. These plants are rated for zones 7 though9 (-10c or 10f).

More about Laurustinus:

Paghat’s post: http://www.paghat.com/viburnumtinus.html

Plants for a Future have some interesting notes: http://www.pfaf.org/database/plants.php?Viburnum+tinus

Oregon State University page:http://oregonstate.edu/dept/ldplants/viti-i.htm

*****Next Week I will be moving and will not be posting, I hope to post on the following Sunday Febuary 7th.  See you in 2 weeks!*****

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Sweet Scent of the Midwinter Season.

At this time of the year I sneak  outside between rain storms  and check out my favorite gardens to see how the plants are getting along. It is a difficult time of year, often so wet and warm. many plants are weighed down by the rain and some become almost flattened by the weight of the water hanging on branches and stems. Large flowers can become discolored and droop badly. A genus of plants which is often overlooked until this time of year are Sweet Box or Saracocca which put on a fragrant bright show every year.

A lovely, healthy Sweet Box (Sarcococca humilis) hedge used as an edging at Finnerty Gardens.

Sweet Box are from east and south east Asia and ranging through China into the Himalyan Mountains. The first type was brought to Europe in 1901 was Sarococca ruscifolia. It is native to western Hubei, Sichuan and Yunnan where it grows on shady shady cliffs which are often  made of Limestone.  This species was originally discovered and collected by Augustine Henry in 1887.  Another species from the same area is S. humilis which is smaller and more refined in it’s growth.  S. hookeriana is the species found the farthest west and is found in the Himalayans and into Nepal, forms of it are found growing with the others in China.  It is unknown exactly where S. confusa originates, but one can guest it was near the others.

Sarcococca are commonly called Sweet Box because of the wonderful fragrance of their small flowers.

One often does not notice Sarcococca until one day you walk by one which is in bloom and the fragrance attracts your attention. The scent is quite potent and fills areas especially on the occasional warm day at this time of the year.  These plants have powerful alkaloids and other constituents which make them less attractive to insects, disease and fungus which attack other genus. The powerful chemicals are recognized in Asian medicines and extracts are used in topical medications as well as in tonics.  The name of the extract sold by Chinese herbalists is ‘Qing Xiang  Gui’.

The drupes of Sarcococca are large compared to the flowers and add a colorful addition to the plant.

Sweet Box are an easy adaptable plant which is underused. It has attractive smaller foliage which is pleasingly elliptical and glossy green. Species such as ruscifolia, confusa and hookeriana can be used as low hedging which grows to 4ft(1.2m) and can easily be clipped and shaped.  S. humilis and it’s forms are lower growing and more suckering, it can be used as a low groundcover or mass planted. They are also an essential addition to any winter garden. All Sarcococca tolerate shade to deep shade (if you are willing to forgo the flowering) and make excellent understory plants.

The low growing Sarcococca humilis is planted behind the sign here in Finnerty Gardens

Growing Sweet Box is easy as they are not fussy plants and have no real pests or disease to deal with.  as they are woodland plants they like rich humusy soil which will retain some moisture sureing the drier seasons. They tolerate some lime better than many other species.  Placement is best where they get some morning sun but none later in the day as they will  yellow and burn in the summer. Dappled light is an excellent situation for them. They are classed as slow growing shrubs so they will not outgrow a space quickly.

The winter garden at Government House has a large Sarcococca in bloom right now.

Sarcococca are rated at zones 7 -9(-15c or 0-10f). S. rucifolia, confusa and hookeriana grow 1.2m(4ft) by the same. S. humilis and it’s forms are generally no more than 1m(3ft) and some forms grow only half that height.

Sweet Box links:

very detailed article about Sweet Box: http://davesgarden.com/guides/articles/view/2732/

Paghat’s Garden article on S. ruscifolia: http://www.paghat.com/saracococca.html

Finnerty Gardens: http://external.uvic.ca/gardens/

Until we meet again soon…..

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