Dipteronia

Description

Dipteronia is a genus of deciduous trees native to China, with only one species known as Dipteronia sinensis. The trees are also commonly known as the Chinese ash due to their resemblance to the ash tree. They are relatively small trees, growing up to 12 meters tall, with a straight trunk and a broad, rounded crown. The bark is grey-brown and smooth when young, becoming rough and fissured as the tree ages.

Taxonomic Information

Appearance

Dipteronia trees have compound leaves that are pinnate, with leaflets arranged in pairs along the stem. The leaflets are elliptical in shape, with a serrated edge, and can be up to 15 cm long. The leaves turn yellow in the fall before dropping. The flowers are small, greenish-yellow, and appear in clusters in the late spring or early summer. The fruit is a winged samara, with two seeds in each half. The samaras ripen in the fall and persist on the tree throughout the winter, providing food for wildlife.

Care Guide

Dipteronia trees prefer moist, well-drained soil that is slightly acidic. They can tolerate a range of soil types, including clay and sand, but do not do well in soils that are heavily compacted or poorly drained. The trees prefer full sun, but can tolerate some shade. They are hardy in USDA zones 5-8. Water: Dipteronia trees require regular watering, especially during the first few years of growth. They prefer soil that is consistently moist but not waterlogged. Fertilization: Fertilize Dipteronia trees in the spring with a balanced, slow-release fertilizer. Soil: Dipteronia trees prefer well-draining soil that is slightly acidic. Sunlight: Dipteronia trees prefer full sun but can tolerate some shade. Hardiness Zones: Dipteronia trees are hardy in USDA zones 5-8.

Common Pests & Diseases

Dipteronia trees are relatively resistant to pests and diseases. However, they can be susceptible to verticillium wilt, which can cause wilting, yellowing, and death of the tree. The trees may also be susceptible to scale insects, which can cause yellowing and loss of leaves.

Habitat

Dipteronia trees are native to China and are found in a variety of habitats, including forests, scrublands, and mountain slopes. They prefer moist, well-drained soil and full sun but can tolerate some shade.

Question and Answer

Q: Can Dipteronia trees be grown in containers?

A: While Dipteronia trees can be grown in containers, they do best when planted in the ground.

Q: Do Dipteronia trees require pruning?

A: Dipteronia trees do not require pruning, but can be pruned to shape or remove damaged or diseased branches.

Q: How fast do Dipteronia trees grow?

A: Dipteronia trees are relatively slow-growing, typically growing 1-2 feet per year.

Q: Are Dipteronia trees drought-tolerant?

A: Dipteronia trees prefer moist soil and are not drought-tolerant.

Related Plants

• Sapindus
• Aesculus
• Koelreuteria
• Liquidambar

References

• Barnes, B. V., & Wagner Jr, W. H. (1981). Michigan trees. University of Michigan Press.
• Dirr, M. A. (1998). Manual of woody landscape plants: their identification, ornamental characteristics, culture, propagation and uses. Stipes Pub Llc.
• Munson, P. J. (1998). Trees for American gardens. Abrams.