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Incense Cedar

Calocedrus decurrens

Cupressaceae · coniferous tree · native

Last updated

Data Coverage 4 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

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

Height
70–110 ft
Spread
6 ft
Growth Rate
Slow
Light
Sun to Part Shade
Soil
Adaptable
Water
Low
Hardiness
Zone Zones 5a–8b
Bloom Time
Non-flowering
Origin
Pacific Northwest native

Phenological Calendar

Stage Typical Window
New growth flush BBCH 11 Feb 15-Mar 15
Bloom start BBCH 61 May 1-May 31
Bloom end / petal fall BBCH 69 May 15-Jun 15
Fruit/seed development BBCH 71 Jun 1-Aug 31
Fruit/seed maturity BBCH 85 Sep 1-Nov 30

Diseases (4)

Cultivars (1)

'Maupin Glow'
Common name: Maupin Glow Incense Cedar; Mature height: 8 ft
Hardy to USDA Zone 6