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Micranthes stellaris

Micranthes stellaris · Saxifragaceae

The gardener's calendar

The right move for September

Ideal time to plant micranthes stellaris: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Evergreen, in basal rosette
Flowering
Spring (April-May)
Mature height
10-20 cm tall
Growth
Slow
Hardiness
Very hardy (down to -15°C)
Origin
Mountainous regions of Europe and Asia
Soil type
Well-drained, gravelly, slightly acidic

Care

Watering

Water regularly in spring and summer, but avoid waterlogging. Prefer moist soil but never soggy. In winter, reduce watering and let the soil dry slightly between waterings.

Light Exposure

Place starry saxifrage in a well-lit spot or partial shade. It tolerates partially shaded areas, but flowers more abundantly in the sun. Protect it from direct rays in very hot climates.

Soil and Drainage

Prepare a substrate rich in organic matter and very well-drained, enriched with gravel or sand. Add compost to promote moisture retention while maintaining aeration. Slightly acidic pH is ideal.

Fertilizing

Apply balanced fertilizer in spring, at the beginning of the growing season. Moderate fertilization is sufficient; this plant doesn't require much nutrient input. Annual compost application can replace commercial fertilizer.

Pruning and Cleanup

Remove faded flowers after flowering to encourage new buds. Eliminate dead or damaged leaves in spring. No drastic pruning is necessary; this small herbaceous plant self-regulates naturally.

Diseases and Pests

Starry saxifrage is generally hardy. Watch for powdery mildew in humid, confined atmospheres. Excess moisture can promote root rot; ensure good drainage. Slugs can damage young foliage in spring.

Did you know?

Starry saxifrage was once used in traditional medicine to treat kidney ailments, particularly stones. Its Latin name "Saxifraga" literally means "stone-breaker," as these small alpine plants are renowned for settling in rocky crevices and fissures, where they seem to "break" rocks by penetrating the tiniest gaps.

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.

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Tips generated and checked by Viridia — adapt them to your local climate.