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Atocion rupestre

Atocion rupestre · Caryophyllaceae

The gardener's calendar

The right move for September

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

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ID card

Family
Caryophyllaceae
Type
Perennial herb
Adult size
10–20 cm tall
Flowering
June to August
Foliage
Deciduous or semi-evergreen
Hardiness
Very hardy (down to -20 °C)
Origin
Alpine and mountainous regions of Europe
Soil
Well-drained, rocky, poor

Care

Exposure

Choose a very sunny location (6 to 8 hours of direct sun daily). This alpine catchfly thrives in full sun and tolerates shade poorly. A south or west-facing exposure is ideal for stimulating abundant flowering.

Soil

Plant it in very well-drained, poor, and rocky soil. Avoid waterlogging at all costs, as it promotes root rot. Adding gravel or coarse sand improves drainage.

Watering

Water moderately during the growing and flowering periods, once or twice a week depending on conditions. Let the soil dry slightly between waterings. In winter, drastically reduce watering.

Fertilizing

Apply very little fertilizer: a light spring feeding is sufficient. Excess nitrogen promotes foliage at the expense of flowers. Prefer a balanced, diluted fertilizer.

Pruning and maintenance

Remove spent flowers regularly to extend flowering and maintain a compact shape. Remove dead foliage in late winter. Light pruning after flowering helps maintain a bushy, dense habit.

Diseases and pests

This plant is generally resistant. Watch out for excessive moisture, which can cause fungal rot. Ensure good air circulation through the foliage and avoid watering late in the day. Slugs may occasionally damage young plants.

Did you know?

Atocion rupestre was long classified in the Silene genus, which explains its common name. The term 'rupestre' literally means 'of the rocks,' as this small herbaceous plant grows naturally in rock crevices and alpine scree, forming spectacular flowering cushions that appear to float on bare rock. It symbolizes botanical resilience in high mountains.

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.