California brittlebush
Encelia californica · Asteraceae
The gardener's calendar
Ideal time to plant california brittlebush: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Common name
- California Sunflower
- Family
- Asteraceae
- Form
- Herbaceous
- Flowering
- Spring to summer (April-July)
- Adult height
- 60-120 cm tall
- Foliage
- Deciduous, grey-green and pubescent
- Hardiness
- Hardy down to -5 °C
- Origin
- California and Lower California (North America)
Care
Sunlight
Encelia californica requires full sun exposure, with a minimum of 6 hours of direct light daily for abundant flowering. Avoid shaded areas which reduce vigor and flower production.
Watering
Adapted to dry climates, this plant tolerates drought well once established. Water moderately in spring during growth, then gradually reduce watering in summer. In pots, let the soil dry out between waterings to prevent root rot.
Soil
Choose well-draining soil that is poor to moderately fertile, or even chalky or sandy. A mix with sand or pumice works perfectly. Avoid heavy, compacted soils which promote root asphyxiation.
Pruning and deadheading
Remove spent flowers to encourage continuous and prolonged flowering. In late autumn, cut back the plant lightly to maintain a compact shape. More severe pruning in spring rejuvenates plants that have become too woody.
Fertilizing
A balanced fertilizer application in spring is usually sufficient. Avoid excess nitrogen which would promote foliage at the expense of flowering. In naturally poor soil, a light application in late winter supports growth.
Diseases and pests
Encelia californica is generally robust but can suffer from powdery mildew if there is excessive humidity or poor air circulation. Ensure good ventilation and avoid wetting the foliage when watering. Aphids may occasionally appear in spring: remove them with water or a mild soapy solution.
Did you know?
The name "Encelia" comes from ancient Greek and designates a useful or beneficial plant. Encelia californica is a typical pioneer plant in California's arid zones: its deep roots and grey-green, pubescent leaves (covered in fine hairs) are remarkable adaptations to heat and drought, reflecting light to limit transpiration.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
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- YarrowAchillea millefolium
- Ox-eye daisyLeucanthemum vulgare
- SneezewortAchillea ptarmica
- Canadian goldenrodSolidago canadensis
- WormwoodArtemisia absinthium
Tips generated and checked by Viridia — adapt them to your local climate.