About
An attractive perennial, reaching 50-100cm, with upright healthy form. It bears attractive blooms in blue. 'Keystone' is valued in garden settings.
About the genus
Petrocosmea are evergreen perennials producing low rosettes of fleshy, often felted, lance-shaped or rounded leaves. Five-lobed, tubular to bell-shaped flowers are produced in small clusters in spring
Plant details
Suggested usesBorders, cottage gardens
Care notes
CultivationFertile well-drained soil
PruningCut back autumn/spring
PropagationDivide 3-4 years
Pest resistanceSlugs possible
Disease resistanceMildew possible