Coastal sagebrush
Artemisia californica · Asteraceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around coastal sagebrush and prepare for winter.
ID card
- Foliage
- Evergreen, finely divided, aromatic gray-green
- Flowering
- August to October, small discreet yellow flowers
- Adult size
- 1.2 to 1.8 m tall, 1.2 to 1.5 m wide
- Growth
- Fast to moderate
- Hardiness
- Down to -5 to -10 °C depending on conditions
- Origin
- Chaparral and deserts of southern California
- Soil type
- Well-drained, poor to moderately fertile, tolerates aridity
Care
Light Exposure
Place your Artemisia californica in full sun, at least 6 hours per day. It will love a south or west-facing exposure in temperate climates. Generous light promotes compact growth and intensifies the aroma of its foliage.
Watering
Water moderately and regularly during the first year of establishment. Once well rooted, the plant becomes very drought-tolerant and needs only occasional watering, or none at all depending on your climate. Avoid stagnant moisture in winter.
Soil and Drainage
Prefer light, well-drained and rather poor soil. Calcareous, gravelly or sandy soil suits it perfectly. Improve drainage if your soil is heavy by incorporating sand or gravel.
Pruning and Maintenance
Prune lightly in spring (April-May) to maintain a compact, bushy shape. Cut back a third of the height annually to rejuvenate the plant. Remove dead or diseased branches as soon as you spot them.
Fertilization
No fertilizer is necessary on established soil. If the soil is very poor, a light application of compost in spring is more than enough. Excess nitrogen promotes soft growth and reduces hardiness.
Diseases and Pests
Artemisia californica is very resistant to diseases. In humid climates, watch for root rot linked to excessive moisture. No major specific pests generally affect this species.
Did you know?
Artemisia californica, also called 'California mugwort,' has been used for centuries by California Native American peoples, particularly for its aromatic and traditional properties. Its highly fragrant foliage naturally repels insects, making it an excellent companion plant in the garden, especially in the dry coastal areas of southern California where it structures the natural landscape.
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
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- SneezewortAchillea ptarmica
- Canadian goldenrodSolidago canadensis
- WormwoodArtemisia absinthium
Tips generated and checked by Viridia — adapt them to your local climate.