About
A small, solitary barrel or globose cactus to about 15cm tall from rocky habitats in western North America, with prominent spiralling ribs bearing dense clusters of white, pink, or yellow spines, and small, cup-shaped flowers in spring ranging from white to pink or yellow, followed by dry, papery fruits. A choice and hardy cactus for a sunny, sharply-drained rock garden or alpine house.
About the genus
Polemonium can be annuals or herbaceous perennials or upright or spreading habit, with pinnate leaves and usually clustered, tubular, bell, or funnel-shaped flowers
Plant details
Suggested usesBedding, containers, hanging baskets.
Care notes
CultivationPlant after last frost in fertile soil.
PruningDeadhead regularly.
PropagationGrow from seed in spring.
Pest resistanceGenerally pest-free.
Disease resistanceGenerally disease-resistant.