Lavender cotton
Santolina chamaecyparissus · Asteraceae
📷 JLPC · CC BY-SA 3.0
⚠️ Feuilles contiennent composés irritants et toxiques. Ingestion : troubles digestifs, irritation buccale chez animaux et enfants.
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around lavender cotton and prepare for winter.
ID card
- Family
- Asteraceae
- Type
- Perennial shrub
- Foliage
- Evergreen, fine and feathery, silvery-gray
- Flowering
- July to August, small golden-yellow flowers in pompoms
- Adult height
- 60 cm (similar width)
- Hardiness
- Good, down to approximately -10°C
- Origin
- Mediterranean basin
- Growth
- Moderate
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Santolina requires impeccable drainage and fears winter moisture more than cold: plant it on a mound or in a rock garden, avoid the foot of a gutter.
The common mistake
Poor drainage or autumn-winter watering quickly promote decline.
The pro's trick
Prune it hard (5-10 cm) from September onwards so it gets through winter stronger and regrows thick in spring.
Care
Exposure
Santolina demands full sun to express its full ornamental potential and generous flowering. It tolerates partial shade poorly, where the foliage becomes less dense. Choose a warm, open location, ideal for rock gardens or Mediterranean borders.
Watering
This plant is very water-efficient, like Mediterranean species. Water moderately for the first 2-3 weeks after planting, then reduce watering significantly in summer. In case of heavy rain, ensure water doesn't pool at the base to prevent rot.
Soil
Santolina prefers well-drained soil, even poor or stony soil. It dreads excessive moisture and adapts perfectly to dry, chalky terrain. Improve drainage by adding gravel or sand if your soil is heavy or clayey.
Pruning
Prune lightly after flowering (late August-September) to maintain a compact, bushy shape. You can also pinch young shoots in spring to encourage branching. Avoid severe pruning into hard wood, which could weaken the shrub.
Fertilizer
No fertilizer is necessary under normal conditions. This frugal plant actually dislikes overly rich soils, which make it weak and less resilient. A mineral mulch (gravel) will be more beneficial than organic matter.
Health and pests
Santolina is generally very robust and rarely affected by disease when grown in well-drained soil. Stagnant moisture can promote rot or leaf spots. Check for aphids in spring, but the plant typically recovers easily on its own.
Did you know?
Nicknamed "Cotton lavender" in English, even though it is neither cotton nor lavender, Santolina was once used in Mediterranean embroidery for its delicate silvery foliage. The Romans also planted it in therapeutic gardens, recognizing its tonic properties, which led to its gradual integration into European herbals during the Middle Ages.
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.
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Tips generated and checked by Viridia — adapt them to your local climate.