Phellodendron

Description

Phellodendron, also known as cork tree, is a genus of deciduous trees and shrubs that belongs to the family Rutaceae. This genus consists of only two species, Phellodendron amurense and Phellodendron chinense, both of which are native to Asia. The name Phellodendron is derived from the Greek words “phellos” meaning cork and “dendron” meaning tree, which refers to the cork-like bark of the plant.

Taxonomic Information

Appearance

The Phellodendron plant typically grows to a height of 50-60 feet and has a spread of 30-40 feet. It has a rounded crown and a broad, spreading canopy. The leaves of the plant are pinnately compound, with 11-17 leaflets. The leaflets are dark green, glossy, and have a leathery texture. In the fall, the leaves turn a beautiful shade of yellow.

The bark of the Phellodendron plant is cork-like, as mentioned earlier, and has a grayish-brown color. It is deeply furrowed, and the inner bark is yellow. The fruit of the plant is a small drupe that is oval in shape and has a blackish-purple color. The plant blooms in late spring or early summer, producing small, yellow flowers that grow in clusters.

Care Guide

The Phellodendron plant is a hardy and versatile plant that requires minimal care. Here are some tips on how to care for your Phellodendron plant:

Water: The Phellodendron plant prefers slightly moist soil. Water the plant regularly, especially during dry spells.

Fertilization: Fertilize the plant once a year with a slow-release fertilizer. Apply the fertilizer in the spring before new growth appears.

Soil: The Phellodendron plant prefers well-drained soil that is slightly acidic. If your soil is too alkaline, amend it with sulfur or aluminum sulfate.

Sunlight: The Phellodendron plant can tolerate full sun or partial shade. However, it prefers partial shade, especially during the hottest part of the day.

Hardiness Zones: The Phellodendron plant is hardy in USDA zones 4-8.

Common Pests & Diseases

The Phellodendron plant is relatively pest and disease-free. However, here are some common pests and diseases that may affect your plant:

Pests: The Phellodendron plant may be susceptible to aphids and scale insects. These pests can be controlled with insecticidal soap or neem oil.

Diseases: The Phellodendron plant may be susceptible to verticillium wilt, which can cause wilting, yellowing, and death of the plant. There is no cure for this disease, so infected plants should be removed and destroyed.

Habitat

The Phellodendron plant is native to Asia, specifically China, Korea, and Japan. It grows in a variety of habitats, including forests, woodlands, and stream banks. It is a hardy plant that can tolerate a wide range of conditions, including drought, wind, and pollution.

Question and Answer

Q: Can the Phellodendron plant tolerate cold temperatures?

A: Yes, the Phellodendron plant is hardy in USDA zones 4-8 and can tolerate cold temperatures.

Q: How often should I water my Phellodendron plant?

A: Water your Phellodendron plant regularly, especially during dry spells. However, be careful not to overwater, as this can lead to root rot.

Q: Can I grow the Phellodendron plant in a container?

A: Yes, the Phellodendron plant can be grown in a container. However, make sure to use a large container and provide adequate drainage.

Q: Is the Phellodendron plant toxic to pets?

A: Yes, the Phellodendron plant is toxic to pets, especially cats and dogs. The plant contains a compound called berberine, which can cause vomiting, diarrhea, and other gastrointestinal symptoms.

Related Plants

• Amur Cork Tree (Phellodendron amurense)
• Chinese Cork Tree (Phellodendron chinense)

References

• Dirr, M. A. (2011). Dirr’s encyclopedia of trees and shrubs. Timber Press.
• Missouri Botanical Garden. (n.d.). Phellodendron. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b478
• University of Connecticut Plant Database. (n.d.). Phellodendron amurense. Retrieved from http://hort.uconn.edu/detail.php?pid=380