Calocedrus decurrens
An evergreen conifer native to western North America with a tall, narrow columnar habit, dense fragrant foliage, duckbill-like cones, cinnamon-red bark, and durable, aromatic wood used for timber and pencils, thriving in well-drained soils and tolerating drought.
Common Names
Incense Cedar, California Incense Cedar, Incense-Cedar, California Incense-Cedar, White Cedar, California White Cedar, Post Cedar, Red Cedar
Summary
Incense Cedar is a native evergreen conifer of western North America from Oregon to Baja California with a broad conic to columnar crown and dense, flattened sprays of dark green, fragrant foliage; the reddish-brown bark exfoliates with age, foliage is aromatic when crushed, and cones are cylindrical with scales in decussate pairs resembling duck-beaks, with wind-dispersed seeds.
It prefers full sun to partial shade on well-drained soils, tolerating a range of soil types including sandy, loam, clay, and serpentine, with drought and heat tolerance and deep, infrequent watering when established; hardy in USDA zones 5A–8B; commonly used as a screen, hedge, or specimen, and valued for aromatic wood used in pencils and cabinetry; propagation is by seed or cuttings, and pruning is minimal, though young trees are fire-prone and sites should account for fire risk.
Lifecycle
Perennial
Height
70-110 ft
Spread
6-20 feet
Hardiness Zones
Zones 5a-8b
Sunlight Requirements
Ideally full sun, tolerates partial sun and partial shade.
Soil Type
Well-drained, slightly acidic sandy loam soil
Soil Drainage
Well-drained soil
Soil pH
6–7, slightly acidic to neutral
Bloom Color
Insignificant
Bloom Time
Spring
Foliage Color
Green to dark green
Fall Foliage Color
No fall color; evergreen.
Leaf Lifecycle
Evergreen needle
Growth Rate
Slow
Seasons of Interest
Spring, Summer, Fall, Winter
Propagation Methods
Seeds, Cuttings (great difficulty), Grafting (for cultivars)
Attracts Wildlife
Attracts birds, butterflies, other pollinators
Taxonomy
- Taxonomic Rank
- Species
- Author
- (Torr.) Florin
- Publication
- Taxon 5: 192. (1956)
Superior Taxa
- Kingdom
- Plantae
- Subkingdom
- Pteridobiotina
- Phylum
- Pinophyta
- Class
- Pinopsida
- Subclass
- Cupressidae
- Order
- Cupressales
- Family
- Cupressaceae
- Genus
- Calocedrus
Synonyms
Libocedrus decurrens Thuja decurrens Thuja craigana Libocedrus decurrens f. compacta Libocedrus decurrens f. glauca Libocedrus decurrens f. aureovariegata Abies cupressoides Heyderia decurrens Libocedrus decurrens var. glauca