Ostryopsis

Description

Ostryopsis is a small genus of deciduous shrubs native to Asia and North America. These shrubs are known for their attractive bark and foliage, making them popular choices for ornamental landscaping. The genus was first described in 1908 by the American botanist Nathaniel Lord Britton.

Taxonomic Information

Appearance

Ostryopsis shrubs typically grow to be 6-8 feet tall and wide, with a rounded shape. Their bark is smooth and grey, with horizontal lenticels that give it a striped appearance. The leaves are alternate, simple, and serrated, with a rounded or heart-shaped base. In the fall, the leaves turn yellow, orange, or red. The flowers are small and appear in the spring in clusters of three to six. The fruit is a small nut surrounded by a papery wing.

Care Guide

Ostryopsis shrubs prefer moist, well-drained soil and full sun to partial shade. They are hardy in USDA zones 4-7. Water regularly during the growing season, and fertilize in the spring with a balanced fertilizer. Prune in the late winter or early spring to remove any dead or damaged branches.

Common Pests & Diseases

Ostryopsis shrubs are generally resistant to pests and diseases. However, they may be susceptible to aphids, spider mites, and scale insects. These insects can be controlled with insecticidal soap or neem oil. Leaf spot and powdery mildew may also occur, particularly in humid conditions.

Habitat

Ostryopsis shrubs are native to Asia and North America. They are found in a variety of habitats, including forests, meadows, and rocky slopes. In Asia, they are found in China, Japan, and Korea. In North America, they are found in the western United States and Canada.

Question and Answer

Q: Can Ostryopsis shrubs tolerate drought?

A: Ostryopsis shrubs prefer moist soil and may not tolerate prolonged periods of drought. It is important to water them regularly during the growing season.

Q: When should I prune my Ostryopsis shrub?

A: Prune your Ostryopsis shrub in the late winter or early spring, before new growth appears. This will allow you to remove any dead or damaged branches and promote healthy growth.

Q: How can I control aphids on my Ostryopsis shrub?

A: Aphids can be controlled with insecticidal soap or neem oil. These products should be applied according to the manufacturer’s instructions.

Q: What is the hardiness zone for Ostryopsis shrubs?

A: Ostryopsis shrubs are hardy in USDA zones 4-7.

Related Plants

• Betula
• Carpinus
• Corylus
• Ostrya

References

• “Ostryopsis.” Flora of China, www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200005859.
• “Ostryopsis.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d352.
• “Ostryopsis.” The Morton Arboretum, www.mortonarb.org/trees-plants/tree-plant-descriptions/ostryopsis.