Calocedrus

Description

Calocedrus, commonly known as the incense cedar, is a genus of coniferous trees native to North America and Asia. These trees are known for their tall, narrow growth habit and aromatic wood, which is often used in the production of pencils, chests, and other wooden items. Calocedrus trees can grow up to 70 feet tall and have a lifespan of up to 500 years.

Taxonomic Information

Appearance

The incense cedar has a distinctive appearance, with a narrow, conical shape and a straight trunk. The bark is reddish-brown and shreds in long, narrow strips. The leaves are scale-like and arranged in flattened sprays, with a blue-green color on the upper surface and a white stripe on the underside. The cones are small and shaped like barrels, with woody scales that release their seeds when exposed to heat or fire.

Care Guide

Calocedrus trees are relatively low-maintenance and can adapt to a variety of growing conditions. However, they do require some care to ensure healthy growth.

• Water: Water the tree deeply once or twice a week, depending on the weather and soil conditions. Avoid overwatering, as this can lead to root rot.
• Fertilization: Apply a slow-release fertilizer in the spring to promote healthy growth.
• Soil: Calocedrus trees prefer well-draining soil with a slightly acidic pH. Amend heavy clay soil with organic matter to improve drainage.
• Sunlight: These trees prefer full sun to partial shade.
• Hardiness Zones: Calocedrus trees are hardy in USDA zones 6-9.

Common Pests & Diseases

Calocedrus trees are generally resistant to pests and diseases, but they may be susceptible to certain issues.

• Cypress canker: This fungal disease can cause dieback and ultimately kill the tree. Remove infected branches and avoid overhead irrigation.
• Spider mites: These tiny pests can suck the sap from the leaves, causing discoloration and stunted growth. Treat with an insecticidal soap.
• Bagworms: These caterpillars can defoliate the tree if left unchecked. Handpick or treat with a pesticide.

Habitat

Calocedrus trees are found in a variety of habitats, from mountain forests to coastal areas. They prefer well-draining soil and can tolerate drought and high elevations. In North America, they are found in the Pacific Northwest, California, and the Rocky Mountains. In Asia, they are found in China, Japan, and Taiwan.

Question and Answer

Q: Can incense cedar wood be used for outdoor furniture?

A: Yes, incense cedar wood is naturally weather-resistant and can be used for outdoor furniture.

Q: Can Calocedrus trees be pruned?

A: Yes, Calocedrus trees can be pruned to remove dead or diseased branches, but avoid heavy pruning as this can damage the tree.

Q: How fast do Calocedrus trees grow?

A: Calocedrus trees have a moderate growth rate, typically growing 1-2 feet per year.

Q: Can Calocedrus trees be propagated from cuttings?

A: Yes, Calocedrus trees can be propagated from cuttings, but this can be a difficult process and is typically done by experienced growers.

Related Plants

• Cupressus
• Thuja
• Chamaecyparis
• Juniperus

References

• “Calocedrus.” Floridata. Accessed July 13, 2021. https://floridata.com/Plants/Cupressaceae/Calocedrus/.
• “Calocedrus.” Missouri Botanical Garden. Accessed July 13, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b726.
• “Incense Cedar.” Oregon State University. Accessed July 13, 2021. https://oregonstate.edu/dept/ldplants/calocedrus.htm.