![]() We all say we love trees: we can do much better. They stand, silent sentinels, like guardian angels watching us scurry by. They suck up excess rain to help mitigate flooding. These trees provide us oxygen, clean our air, lower temperatures dramatically (saving incalculably on air conditioning), provide food and habitat for pollinators and havens for birds. This year four stellar speakers-two from Arboreta in the Midwest and two from Colorado-will bring the latest information on issues we all face: what to pick, how to site, how to properly maintain these trees and what does the future hold for our tattered urban forest?Īs I drive back and forth to the Gardens to work, I often marvel at Denver’s amazing urban tree forest: so many trees! And practically all of them a deliberate and conscious act on the part of a homeowner or landscape professional. Everyone says they love trees, but why then do we keep planting the same old, same old? A large percentage of Denver’s professional arborists attend regularly, yet homeowners can benefit enormously from the day’s presentations. As the joke goes, if you think education is expensive, try ignorance! 5th Tree Diversity Symposium 2018įor five years the issues of street trees-what works, what doesn’t and what to do next-has been the subject of a day long series of incredible talks by tree experts from across the Continent (and the best locals too!) right here at Denver Botanic Gardens. What monoculture will we trot out to replace the millions that will come down, that will itself succumb? The cost for removing ashes may tally in the billions of dollars just for the state of Colorado. Now the Emerald Ash Borer is dooming these. Cornus mas Cornelian-cherry InstantHedge 10 linear feet. We need to talk tree diversity, folks! The elms all go with Dutch elm disease, and we plant way too many ash trees. Our deer-resistant hedges are the perfect way to keep the deers out of your garden. I only know of one other in a garden in Denver. What fascinates me about this tree is that it is so dazzling in bloom, so attractive all year in habit, leaf and bark, with blazing fall color. It reminds me of Gustav Klimt’s Portrait of Adele Bloch-Bauer II, and the tree has almost as rich and lurid a history as the painting looted by Nazis and featured in a recent movie (the painting, not the tree). Right this minute, despite the cold snaps of recent days, the glorious Cornelian Cherry ( Cornus mas) at Denver Botanic Gardens’ Romantic Gardens is shimmering with golden glory. Common name refers to the cherry-like fruits which resemble in color the semi-precious gemstone carnelian (or cornelian).Farm & historical homestead in Littleton, CO This name was applied to this plant because it was seen as the opposite of Cornus sanguinea, known as the female or wild cornel. The specific epithet mas means "masculine" or "male". Cornus is also the Latin name for cornelian cherry. Genus name comes from the Latin word cornu meaning horn in probable reference to the strength and density of the wood. Fruits may be used for making syrups and preserves. Creamy white flowers in flat-topped clusters (cymes to 2 1/2' across) bloom in late spring, sometimes with. Fruits are edible, although sour tasting fresh off the plant. Cornus alba, commonly called tatarian dogwood, is a rapid-growing, multi-stemmed, suckering, deciduous shrub that is native to eastern and central Asia in areas in part inhabited by Tatars or Tartars. ![]() ![]() Fruits are ellipsoid, fleshy, one-seeded berries (drupes to 5/8" long) which mature to cherry red in mid-summer. New growth twigs can be greenish purple though dormant twigs are typically dark reddish purple, densely covered with fine hairs. long (5-12 cm), covered with silky hairs underneath. It boasts purple-red stems and oval to elliptic, medium to dark green leaves, 2-5 in. Ovate to elliptic dark green leaves (to 4" long) typically develop insignificant fall color. Cornus amomum (Silky Dogwood) is a vigorous, spreading deciduous shrub of open-rounded habit when mature. Each umbel is surrounded at the base by small, yellowish, petaloid bracts which are much less showy than the large decorative bracts found on some other species of dogwood such as Cornus florida (flowering dogwood) and Cornus kousa (kousa dogwood). Yellow flowers on short stalks bloom in early spring before the leaves emerge in dense, showy, rounded clusters (umbels to 3/4" wide). Scaly, exfoliating bark develops on mature trunks. It typically grows over time to 15-25' tall with a spread to 12-20' wide. Cornus mas, commonly known as cornelian cherry, is a deciduous shrub or small tree that is native to central and southern Europe into western Asia.
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