An extremely vigorous, large, broad canopied tree to 80 feet or more, native to China. Some records include: fastest recorded growth rate - 9 feet; 20 years - 50 feet; largest on record - 135 x 100 feet with a trunk diameter of 16 feet. This can develop into one of the worlds most massive hardwoods.
The stort stemmed, pointed, elliptical leaves are up to 5.5 x 2 inches in size though typically 3.5 x 1 inch. They are pinkish at first turning green above, pale and downy beneath and turn to orange in autumn.
The gray-brown bark flakes off to reveal orange patches beneath.
Hardy zones 4 to 9; it is drought tolerant and also very tolerant of heavy clay.
Proper pruning and training is reuqired when young to develop a well shaped tree since it often can develop multiple trunks.
Good for bonsai cultivation.
Genus - Zelkova
Species - Sinica
Common name - Chinese Zelkova
Pre-Treatment - Required
Hardiness zones - 4 - 9
Height - 20'-30' / 6 - 9 m
Spread - 20'-30' / 6 - 9 m
Plant type - Tree
Vegetation type - Deciduous
Exposure - Partial Shade, partiel sun
Growth rate - Fast
Soil PH - Acidic, Neutral
Soil type - Clay, loam, well drained
Water requirements - Average
Landscape uses - Feature Plant, Street Trees
Bloom season - Spring
Leaf / Flower color - Green / Green
|Germination||1. Soak the Zelkova seeds in warm, not boiling, water for 24 to 48 hours.|
2. Moisten peat moss or vermiculite. Place in a plastic bag and add the Zelkova seeds.
3. Seal the plastic bag and label with the seed name and date with a permanent marker. Place in the refrigerator for six weeks.
4. Open the bag and check the seeds every week. If any seeds are sprouting, plant immediately.
5. Sow the seeds in sterile potting mix, one per pot, and cover with one inch of soil. Place in a warm, brightly lit location. Keep moist until the remaining seeds germinate.
6. Transplant the seedlings outdoors in early spring. (source: ehow.com)