Physoplexis comosa


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Key information

Plant type

Hardy perennial

Flower colour






Skill level


photo by Christina Bollen, copyright GAP Photos (144426)

Plant details

Holder of the Royal Horticultural Society' prestigious Award of Garden Merit (AGM), this choice alpine is worth the extra care and attention it needs. The pale violet, bottle-shaped flowers appear in late summer in clusters of 10-20. Plants are found growing wild in rock crevices in the Alps. They will not stand winter wet so are best grown in an alpine house. Grow in gritty, sharply drained, preferably alkaline soil. If growing in pots, create a mixture of equal parts of loam, leaf mould and grit. Plant in full sun but give protection from harsh midday sun. To propagate sow seed in containers in an open frame in the autumn. Protect plants from slugs and snails.

Family: Campanulaceae

Genus: Physoplexis

Species: comosa

Plant type: Hardy perennial

Flower colour: Violet

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Chalky/alkaline, Dry

Hardiness: Hardy

Skill level: Expert

Height: 8cm

Spread: 10cm

Time to plant seeds: September to November

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