A Case For Cotinus.

At this time of the year I really become aware to the color of foliage in various plant in the landscape. Plants are still fairly fresh and their foliage is alive and vibrant with color. Colors other than greens stand out in ways that often fade as the season goes on. It is unusual to find a group of plants with more color than those of the Cotinus (Smoke Bush) family which gives a show from spring until late autumn.Their color ranges from black purples, wine reds, bluish green, green and into chartreuse yellow – and this does not include autumn tones which are just as show stopping!

The color tones in one branch of Cotinus coggygria 'Velvet Cloak' is remarkable.

The genus Cotinus is a member of the family Anancardiaceae which also contains the  Mango, Cashew, Poison Ivy (Sumac) species and was at first classified as Sumac(Rhus) species until it was separated from the other members. It does not irritate the skin or have sap which can burn.

Smoke Bush(Cotinus) generally have brilliant autumn colors ranging from scarlet into to peach and golds.

Cotinus is a small genus of 2 or possibly 4 species of which coggygria and obovatus are the best known.  Cotinus coggygria is the species which is best known in the landscape and originates in Europe from France into Eurasia and possibly all the way into China. The far eastern representative coggygria sometimes listed as another species C. szechuanensis (var.  szechuanensis). The other well known species is C. obovatus and comes from North America particularly in Tennessee, north Alabama, Missouri, Arkansas and isolated pockets in central Texas. All Cotinus species have been used extensively for a source of dye wood as it gives colors of orange-yellow and yellow coloring. The use of C. obovatus as a yellow dye source before the civil war in U.S.A. almost brought the species to extinction in its native habitats.

Cotinus 'Grace' is a cross between Cotinus coggygria 'Velvet Cloak' and C. obovatus.

 Cotinus  is from ‘Greek’ kotinos meaning wild olive but why it is named this is unknown. Coggygria also comes from ‘Greek’ kokkugia- the name of ‘Smoke Tree’. C.Coggygria has been cultivated  in gardens for an unknown period but is first mentioned in the mid 17th century. The species form is not commonly seen in gardens as there are more exciting color forms.

The less commonly seen species form of Cotinus coggygria is seen here with its lovely green foliage.

Smoke Bush are well known for their colorful foliage and there are an increasing number of cultivars to choose from.  The oldest color form is probably C.c. ‘Foliis Purpureis'(Rubrifolius) which has rich purple -plum leaves which fade into to greenish tones as the summer progresses. C.c. f. purpureus(‘Atropurpureus’) refers to the coloring of the large panicles of purplish flowers. C.c. ‘Royal Purple’ (Notcutt’s Variety’) has leaves which start maroon red and then matures to black-purple(darkest of all forms) it holds its color well throughout the year and changes into scarlet autumn shades. C.c. ‘Velvet Cloak’ has red violet foliage which is dramatic, its floral display is longer than most. It holds is color well.  Cotinus ‘Grace’ leaves emerge in wine-red and has clouds of pink-tinged flowers. A new color yellow range has come out from a chance seedling found at a dutch nursery in 1990, it is C.c. ‘Golden Spirit'(Ancot’) – it does not fade out unless it is under-watered.

The 'smoke in Smoke Bush or tree(Cotinus species) is from the panicles of tiny flowers and then the whispy seedheads later on.

All Cotinus species drier areas often with rocky soil on slopes and hillsides. They have proven to be vary adaptable to many other situations and soils from heavy clay to sandy. They need full sun pr produce the best coloring and floral display. They need adequate watering while becoming established but later are much more drought resistant. They are pest and disease free but sometimes coloring tends to fade out in hotter southern areas, this is where coppicing helps rejuvenate the color. The best coloring is obtained by regularly pruning them hard, use a method such as coppicing to produce wanted effect.

Cotinus 'Royal Purple'(the darkest color) is coppiced to keep its best color and form.

All Smoke Bush are rated at zones 5to 9 and take cold temperatures down to -28 c. (-20 f.) In colder climates they generally are cut to the ground which is like the mentioned coppicing.  Cotinus can be used as specimens, in shrub borders,  as accents, masses, in less watered areas and can pruned into tree forms which are very effective. Cotinus have a lot of appeal in the shape of the leaves and wispy flowers to add to a garden along with strong color.

Cotinus 'Golden Spirit'('Ancot') was found as a chance seedling at a Dutch nursery in 1990 and holds its color well in the September garden.

Cotinus in all its Glory:

Cotinus species : http://en.wikipedia.org/wiki/Cotinus

Cotinus obovatus, a web site devoted to it: http://cotinus.net/

Google image page of Cotinus coggygria cultivars, choose your color:

http://www.google.com/search?q=cotinus+coggygria+cultivars&hl=en&authuser=0&rls=com.microsoft:*:IE-SearchBox&rlz=1I7GGIE&biw=1920&bih=955&prmd=ivns&source=lnms&tbm=isch&ei=L5AHTuXmNYnViAKMl8zSDQ&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CAsQ_AUoAQ

Why Coppice? http://apps.rhs.org.uk/advicesearch/profile.aspx?pid=121

Venetian

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The Scarlet Letter Q or is it O.

Big winds are starting early this year, the forecast is for a colder winter here. I n=know our winters are nothing like those from the rest of Canada and much of North America, we are wet and very slippery with ice here if it gets cold. With cold weather comes more brilliant colors in the departing leaves which are on the trees. So here we are in the blustery weather wanting to go and walk in the forests and big parks to see bright colors. Some of the best color comes from the Quercus family and without a doubt the absolute star in the family is Scarlet Oak (Quercus coccinea). All I can say is Blaze on and warm us up with your firey flame-like leaves!

The Scarlet Oaks enliven the Stelly's Secondary School campus in the autumn.

Scarlet Oaks are one of the trees which people think of when they want to experience the colors of autumn in eastern North America. The colors are so fine that many people take tours through the northern United States and eastern Canadian provinces to experience it. I have never been myself but can imagine how breath-taking it must be based on the color of the same trees here.

As the leaves of Quercus coccinea breakdown anthocyanins are released giving the leaves their red coloring.

Part of the reason of the strong bright colors in Quercus coccinea has to do with how the leaves break down in the fall. The component which affects color is anthocyanin( giving reds and blues) which is stored in the natural sugars found in the leaves. As the leaves start to break down in the fall the anthocyanins are released and their red and blue tones effect the color of the leaf. Many leaves of other trees change into yellow and orange tones which are caused by xanthophyll and carotenoids.It is surprising we get such good color because we are not that cold in the autumn here.

The Scarlet coloring of Quercus coccinea is very intense and brilliant.

Scarlet Oaks are widespread in the east growing from Maine to Alabama and east into Oklahoma. It is a tree which tolerates a fairly wide range of conditions but often is seen growing in upland forests, ridges and hillside where the conditions are a bit drier and the soil is often is sandy and gritty. These are trees of the upper canopy and do not like to be in the shade.

This Scarlet Oak is one of many Oaks found in the 'Mayors Grove' at Beacon Hill Park in Victoria.

Quercus coccinea grow to be large trees of up to 24m(80ft). When they are young they have a more pyramidal shape and with age get a more rounded shape.  The leaves are deeply lobed which gives this tree a more lacey feeling  and more delicate look compared to others of the species. The tree here which might be mistaken for Scarlet Oak is the Pin Oak (Quercus palustris), it needs a damper site and is more likely to be seen up island or in the Vancouver area which have more rain compared to the drought here.

These young Scarlet Oaks show their pyramidal shape which will change with age.

Scarlet Oaks are considered to be the best of the species to grow because of their adaptability to soils and water, their brilliant color and their tolerance of urban conditions.  They like an average to sandy soil which is on the acidic side to keep them from getting chlorosis. They are naturally from drier sites but tolerate damper sites as long that there is good drainage. These trees require full sun to perform their best. These trees are popular with landscapers and are often seen in industrial and commercial settings, here they are seen around parking lots and in parks. These trees have attractive foliage and bark.

 

The bark of Scarlet Oak is ridged and an overall grey color.

 

The acorns of Scarlet Oaks can be hard to come by here with the Squirrels  which eat store them. They are 1-2.5cm(1/2-1in.) long with their cap covering half the nut from the top. Acorns are produced in large quantity every 3 to 4 years. Propagation is by seed which has to be collected before the squirrels get the best ones. Check  your harvest in a bucket of water and throw away any that float. The seed has a short period of viability and needs to be sown as soon as possible.

 

Broadmead Village Shopping Centre has some of the best Scarlet Oaks and other autumn color in the Victoria area.

 

 

Scarlet Oaks are rated at zones 4 through 9 and take -35c(-30f). If you have a large property this tree is an excellent choice for you as it makes an easy to maintain tree which need little work. It is best to buy these trees in a container as like other Oaks they have a tap-root which is easily damaged.

Looking at the quirks of Quercus coccinea:

A visual key to compare Oaks: http://www.cas.vanderbilt.edu/bioimages/pages/compare-oaks.htm

Wiki’s page on Scarlet Oaks: http://en.wikipedia.org/wiki/Quercus_coccinea

Another good site to look up plant at: http://www.hort.uconn.edu/plants/q/quecoc/quecoc1.html

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This Queen Has A Very Red Face!

Some plants we see are boring because we see them so much in garden, others take us by surprise and we ask ourselves if it’s real. Other plants remind us of other plants but their form or flower is not quite right to be that plant. Many plants that are related bear similar flowers or something in the leaves which say to us what they are. One plant that creates many of these feelings is Lobelia x ‘Queen Victoria’ (Queen Victoria Lobelia).

 

'Queen Victoria' Lobelia has some of the most vibrant flowers in the garden.

 

 

There is some confusion as to the parentage of ‘Queen Victoria’ Lobelia which leads to more confusion with its true cold hardiness. From my gleanings of many sources the likely answer to who the parents are is it is a crossing of the northern red Lobelia cardinalis with the southern L. fulgens (Mexican Lobelia) which is found Mexico and south into central America. Both plants have firey red flowers and bloom late in the year. Fulgens most likely contributed the red coloration in the leaves at in the wild some plants have this tinge. Cardinalis contributes the especially brilliant scarlet red flower color and the general shape of the flowers.

 

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The distinctive plum tinted foliage and brilliant red flowers make 'Queen Victoria' Lobelia a knock out in the garden.

Like many plants ‘Queen Victoria’ Lobelia has been around for sometime and was popular from the time it became known to garden enthusiasts.  The first mention I have found dates to 1943 in the New York Times and also in the Los Angles Times. Lillian Meyferth wrote in New York Times that  it as ‘having deeper red flowers and dark,  bronzy foliage’

 

 

The reddish foliage of 'Queen Victoria' Lobelia is attracive early in the year.

 

Whether it be called ‘ x’, speciosa, fulgens or cardinalis on its sales tag ‘Queen Victoria’ Lobelia is easily recognizable from other Lobelia. The red tinged foliage is one of the more distinct colors in the garden and care must be taken when placing this plant. One other thing I have learned is red and plum colors draws ones vision to it in the garden, meaning anything next to this plant will take second place. It is fortunate that this plant is in its glory late in the year when there are not many other plants to compete against it. In fact many tones of plants will complement it with their leave in autumns brilliant shades.

 

Here 'Queen Victoria' Lobelia is planted with other late blooming plants to make a pleasing, colorful display at Tulista Park in Sidney.

Growing ‘Queen Victoria’ Lobelia is quite easy in the right place. This plant like full sun to light shade, and rich deep moisture retentive soil.  In a sunny place the leaves will often droop during the day and perk up later in the evening, giving it a spot of water will make it a tougher plant. Since this is mostly a seed grown plant the color of the leaves will vary in the intensity of color and keep this in mind when buying it. Buy this plant where it is displayed in full sun and where the color is true to its form, in the shade the leaves become more olive toned.

 

 

A Brilliant flash of color from 'Queen Victoria' Lobelia is a welcome sight to behold in the garden at this time of year.

 

As mentioned there is confusion with ‘Queen Victoria’ Lobelia in parentage, it is also with hardiness of this plant. Know you know that one of its parents is from Mexico and southern areas which will lead it to be seen as less hardy. It is was in the past rated as having a much colder tolerance, but this has been changed with experience. It is now rated at zones 7 through 10 or tolerating -10c(14f). It is best to view this plant as a somewhat short-lived perennial with a lifespan of up to 10 years. When you have a vigorously growing plant it will produce new plants which can be divided off in the spring. These plats grow to about 90cm (2 1/2ft) tall and 30cm(1ft) wide.

 

Here 'Queen Victoria' Lobelia is soon to be in bloom on the long perennial border at Government House.

 

‘Queen Victoria’ Lobelia is a very useful plant for in the garden, its colorful foliage and brilliant blooms make it a specimen in the garden. It often looks best planted in groups for impact. It works well in perennial beds, hot sun locations, waterside and poolside gardens, damp sites, containers. It is a good cut flower with its bright coloring which also attracts humming birds and butterflies.

Looking for the Queen:

This site always has good authoritative information : http://www.perennials.com/seeplant.html?item=1.328.

Other gardeners experiences with growing this plant: http://forums.gardenweb.com/forums/load/neweng/msg0512480917815.html

…..Looking to find you here again…..

 

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