Incense Cedar
Calocedrus decurrens
Cupressaceae · coniferous tree · native
Last updated
Incense cedar (Calocedrus decurrens, Cupressaceae) is a slow-growing native conifer from western Oregon to Nevada and south into California, found at elevations of 700 to 2,500 meters. It develops a narrow conical form reaching 70 to 110 feet in cultivation and 100 to 150 feet in the wild, with a lifespan exceeding 1,000 years. Dense fan-like sprays of lustrous dark green foliage show little winter browning. Light to reddish-brown bark and cylindrical female cones with distinctive paired scales resembling duck beaks are identifying features.
Incense cedar grows in sun to part shade on a range of soils, preferring moist, well-drained, slightly acidic sandy loam (pH 4.6 to 7.1), hardy in Zones 5a to 8b. It has low water needs, medium drought tolerance, and a minimum root depth of 60 inches. Maintenance is low. Documented diseases include Seiridium canker, Port Orford cedar root rot, leaf blight, and cedar flagging. The cultivar 'Maupin Glow' offers yellow-and-green foliage at 8 feet. The wood has been the primary material for wooden pencils due to its soft, easily sharpened character.
Quick Facts
Phenological Calendar
| Stage | Typical Window |
|---|---|
| 'New growth flush' BBCH '11' | 'February 15 - March 15' |
| 'Pollen release' BBCH '61' | 'May 1 - May 31' |
| 'Pollen shed complete' BBCH '69' | 'May 15 - June 15' |
| 'Cone development' BBCH '71' | 'June 1 - August 31' |
| 'Cone maturity and seed shed' BBCH '85' | 'September 1 - November 30' |