California Incense-cedar
Calocedrus decurrens · Cupressaceae
📷 The original uploader was Geographer at English Wikipedia. · CC BY 1.0
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around california incense-cedar and prepare for winter.
ID card
- Foliage
- Evergreen, scale-like, dark green
- Type
- Conifer (Cupressaceae)
- Mature size
- 39 ft tall × 10-13 ft wide
- Growth
- Moderate to fast
- Hardiness
- Hardy to approximately -4°F
- Origin
- Western United States (California, Oregon)
- Soil
- Well-drained, slightly acidic to neutral
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Calocedrus decurrens thrives in full sun and well-draining, slightly acidic soil: during the first 2-3 years, water regularly (twice weekly in dry summers) to establish strong root development.
The common mistake
Planting too deep (the root collar must be flush with soil level) or in waterlogged soil: young specimens succumb to root rot within 18 months.
The pro's trick
Mulch generously (8-10 cm) after planting over a 1 m radius: this stabilizes soil moisture, reduces water stress, and significantly improves establishment.
Care
Sunlight
Incense cedar thrives in full sun for optimal development and dense foliage. It tolerates partial shade but will be less vigorous. Plant it sheltered from strong drying winds that can scorch the foliage.
Watering
Water regularly during the first year to encourage root establishment. Once established, incense cedar is quite drought tolerant but prefers moist soil. During extended dry periods, weekly watering is sufficient.
Soil and Planting
Choose well-drained, slightly acidic soil. Amend if necessary with compost. Incense cedar dislikes overly wet or poorly drained soils that promote root problems.
Pruning
No pruning is necessary; incense cedar naturally adopts an elegant pyramidal form. Simply remove dead wood or misplaced branches in late winter. Avoid severe pruning that distorts the shape.
Fertilizing
Fertilizer is not essential if the soil is properly prepared. An organic mulch layer (1-2 inches) at the base is sufficient to gradually enrich the soil and maintain moisture.
Diseases and Pests
Incense cedar is generally very hardy. Ensure good drainage to prevent root rot. In overly humid conditions, fungi may affect the foliage. Good air circulation prevents these issues.
Did you know?
Incense cedar was used by Native Californian peoples to build canoes and durable shelters thanks to its very resistant wood. Its natural essential oils make it naturally rot-resistant, a characteristic that has fascinated woodworkers for centuries.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- Giant sequoiaSequoiadendron giganteum
- JuniperJuniperus communis
- Northern WhitecedarThuja occidentalis
- Bald cypressTaxodium distichum
- Lawson cypressChamaecyparis lawsoniana
- Coast redwoodSequoia sempervirens
Tips generated and checked by Viridia — adapt them to your local climate.