About
Hypericum grandifolium is a rounded, bushy, semi-evergreen shrub to 1 m with arching shoots and dark, blueish-green leaves to 6 cm long. From midsummer to autumn, clusters of star-shaped, golden-yellow flowers to 6 cm across are produced, followed by conical, red fruits. A beautiful and ornamental St John's wort for a sunny or partly shaded border.
About the genus
Hypericum, the St John's worts, are annuals, perennials, shrubs or trees, evergreen or deciduous, with usually paired leaves and showy, five-petalled, yellow flowers with prominent stamens, followed by capsular or berry-like fruits. An enormously versatile genus for sun and shade in well-drained soils.
Plant details
Suggested usesBedding, containers, hanging baskets.
Care notes
CultivationPlant out after last frost in fertile, well-drained soil.
PruningDeadhead regularly to prolong flowering.
PropagationGrow from seed sown in spring.
Pest resistanceGenerally pest-free. Monitor for common garden pests.
Disease resistanceGenerally disease-resistant. Ensure good air circulation.