|Species:||Common name:||Chinese Elm|
|Botanical name:||Ulmus parvifolia|
|Japanese name:||Nire Keyaki|
Varieties used as bonsai: Dwarf (Yatsubusa) Chinese Elm, Hokaido, Seiju, Catlin, Cork Bark, Korean Weepong, Semper Virenss
Advantages: As the varietal name indicates, the Chinese Elm is noted by its small leaves. Coupled with a twiggy habit, the Chinese Elm lends itself to pinching, root pruning and growing in a shallow pot. The list goes on: hardy, good fall color, fascinating exfoliating bark and a tendency to produce a well spaced root buttress.
Disadvantages: Leaf cutters, red spider, and aphids will dispell with all other plants to attack a Chinese Elm. Also, the elm seems a haven for sooty mold, root rot, as well as leaf fungus.
Suitability as bonsai (1 is least suitable 10 is most suitable): 8
Growing location: Full sun
Watering: Water thoroughly and often especially in dry, hot weather. The elms should not dry out.
Propagation: Primarily the elms grow extremely well from seed, but will grow well from hard wood cuttings as well as root cuttings.
Fertilizing: Use a balanced fertilizer weekly during high growth periods and from May 15 to Oct. 15.
Over-wintering: Keep sheltered from wind
Styling: Broom; informal upright; excellent for groves, landscapes but rarely cascade.
Ulmus parvifolia (Chinese Elm) S\M\-10ř\RG\Ls\B Deciduous trees. We grow dwarf Chinese Elms mainly for bonsai, however they can also make nice small landscape trees if staked until they can support their branches which may take 5-10 years. These are all trouble free, easy to grow trees. They prefer full sun and well drained soil. Brown scale may be a problem in some areas, but is easily treated. The small leaves and corky bark are very attractive. The real beauty of these trees is their performance in a bonsai pot or other container after trunk development. They can quickly achieve a 3in or greater trunk in about 5 years with deeply fissured corky bark when planted in the ground. They are easily top and root pruned and respond dramatically to root bound conditions where leaf size and node spacing is reduced to one half inch or more. They should be repotted every 2-3 years. A Seiju Elm field grown for 5 years will easily develop a 4in trunk and may be spring dug and placed immediately into a bonsai pot with spectacular results. Cutting grown plants. All of these elms are resistant to Dutch Elm Disease.