Cerastium holosteoides
Cerastium holosteoides · Caryophyllaceae
The gardener's calendar
Ideal time to plant cerastium holosteoides: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Caryophyllaceae
- Form
- Annual or biennial herbaceous plant
- Flowering
- Spring to early summer (April-June)
- Adult size
- 15-30 cm tall, spreading habit
- Foliage
- Deciduous, small and linear
- Hardiness
- Very hardy, down to -15°C
- Exposure
- Sun to partial shade
- Origin
- Europe, introduced as a cosmopolitan weed
Care
Exposure and light
Cerastium holosteoides prefers a sunny or partially shaded location to flourish fully. In very hot regions, light afternoon shade can encourage prolonged flowering. This plant is highly adaptable and tolerates a variety of exposures well.
Soil and planting
Grow this plant in well-draining soil that isn't demanding in fertility. It adapts to poor, sandy or stony soils and dreads stagnant excess moisture. A light compost addition at planting time is sufficient.
Watering
Water moderately, especially during growth and flowering. Once established, this plant tolerates temporary drought well. Let the soil dry slightly between waterings to prevent rot problems.
Fertilizing
A balanced fertilizer application in spring is enough for this undemanding species. In very poor soil, light organic fertilizer can support growth and flowering without excess.
Pruning and maintenance
Pinch young plants lightly in spring to encourage a compact, branched form. After flowering, remove spent flowers to extend blooming and prevent random self-seeding.
Diseases and pests
Cerastium holosteoides is generally very resistant. Excessive moisture can occasionally promote minor fungal diseases. Ensure good air circulation and avoid wetting the foliage to prevent any problems.
Did you know?
Cerastium holosteoides is commonly called 'Mouse-ear Chickweed' in English, due to its small downy leaves that resemble a mouse's ears. Accidentally introduced worldwide through seeds and soil, it has become a cosmopolitan weed but is generally well-tolerated and appreciated by amateur botanists for its hardiness and ease of cultivation.
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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- Sticky CatchflyViscaria vulgaris
- Creeping baby's breathGypsophila repens
- Mountain sandwortArenaria montana
Tips generated and checked by Viridia — adapt them to your local climate.