Archive for January, 2012

Eastern Leatherwood – Dirca palustris

Published by Mrs. Flower on January 27th, 2012 - in Arborist, Garden, Landscaping, Trees

This is the third segment of our Ornamental Tree and Shrub Series….

Here is a darling understory shrub with a height of 3 – 6’ and equal width. When I first noticed this plant in the dappled light of my woodland, I was love struck. This is a native plant that is found in the eastern half of North America. The multi branched broad shrub is covered with light green 3” oval shaped leaves. This is a very well behaved shrub. In the shade the plant seems to be reaching for the sun and is thinner than the specimens located in full sun, which tend to be full rounded shrubs. I like to hike along the southeast base of Mt. Hoar on the edge of Lake Willoughby, Vermont, the understory is dense with Leatherwood. I am amazed at the width of the leaves, which seem much larger than the standard.

You cannot go wrong with a plant that is good in both sun and shade. It does enjoy moist soil, hence the species “palustris” which means “of the swamps”.  The texture is of medium quality and it is slow growing. This makes a fine plant for the landscape, although it is very difficult to find in cultivation. This makes me covetous. Fall brings forth a fine clear yellow in the leaf, with best color in partial shade conditions.

Leatherwood has no enemies to speak of.  Even deer won’t browse it (it is thought to possibly have diuretic qualities). Studies recently done show that extracts from the seeds contain linoleic and oleic acid which have insecticidal qualities for specific insects.

The bark has a leathery feel. It is not easy to snap off a branch. This quality made it useful for Native Americans to make baskets, bowstrings and fish lines. In very early spring, the shrub bursts forth with lovely perfect 4” butter yellow flowers. Each flower produces one seed. The large green seeds form and drop quickly, literally within a week all seeds will drop from the plant. The seeds need to be collected and sown fresh in late spring for sprouting the following spring. Layering works as a method, but proves difficult as one would have to work in the woodland laboratory where anything can happen. Propagation from cuttings is very difficult, which of course baits me – making it a must try!

American Hornbeam – Carpinus caroliniana

Published by Mrs. Flower on January 7th, 2012 - in Arborist, Garden, Landscaping, Natives, Trees

This is the second segment of our Ornamental Tree and Shrub Series….

Who wouldn’t like a tree with the moniker “muscle wood”? Also commonly called “blue beech” or “ironwood”, the American Hornbeam is a medium-sized native hardwood tree that, on average, reaches 20 to 30 feet in height and width. Ironwood has a range from Nova Scotia through most of the eastern seaboard of the US, to include the topmost section of Florida, and westward to roughly the middle of the central time zone. It is hardy in zones 3 – 9.

The young bark is smooth and the subtly twisted trunk looks rather sinewy. As it ages the bark becomes fissured and fluted. The form can range from a multistemmed shrub to a single stemmed tree. The growth rate is slow – about a foot per year. Enjoying moisture places it along brooks predominately in the wild. This is a tree for the understory! It is tolerant of deep shade, but also will perform in full sun with a good deep acid soil and promise of adequate fertilizer and moisture. It is also a fine tree for naturalizing.

The leaves resemble that of beech. It is a simple leaf 3 – 4” long with sharp teeth. Fall color is exceptional, displaying red, maroon, orange and gold. The tree exhibits both male and female flowers that are lovely in display, and the resulting fruits are numerous nutlets prized by birds.

Carpinius caroliniana is one of my most favorite trees, even though I know I tend to say this many times about many trees. But, this understory specimen amid taller limbed up trees is a true delight in the fall that will yield wildlife activity further along in the season. I have seen an absolutely sublime alley made of American Hornbeam – the medium texture was kind on the eye and the fall display was robust.

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