CHINESE ELM (ULMUS PARVIFOLIA)
Chinese Elm (Ulmus parvifolia)
The Chinese elm thrives in either full sun and/or partial shade. In temperate climates, it can be left outdoors even during the winter months.
The Chinese Elm can not endure prolonged drought or constant moisture. Wait until the topsoil is dry, and then water generously, making sure the entire root mass is watered.
The Chinese elm thickens rather quickly and requires frequent trimming in order to produce a dense network of fine branches. Allow the shoot to extend 3 or 4 nodes before pruning it back to 1 or 2 leaves. The tree buds well from old wood after strong pruning. The best time to prune larger branches is in late autumn. The Chinese elm is ideal for shaping with standard wiring
Chinese Elm trees should be repotted every two years when they are young. As they grow older and larger they can be repotted in longer intervals. No matter what the age, the best time to repot is during the spring. The elm's roots tend to grow crooked and intertwined, so it's important that root pruning be done carefully and with precision to create a nice nebari. It has no special soil requirements, but it's best to select well-draining soil.
The Chinese Elm is often infested by spider mites or scale when humidity is low. Appropriate pesticides should be used, and frequent spraying with water helps to deter pests and diseases.