Roscoea purpurea 'Harvington Imperial'
roscoea
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
- Position: partial shade
- Soil: Moderately fertile, moist, well-drained soil
- Rate of growth: average
- Flowering period: July to August
- Hardiness: borderline hardy (may need winter protection)
This captivating tuberous perennial, reaching around 40cm (16in) in height, showcases strap-shaped green leaves that elegantly embrace robust, red stems. The highly distinctive brick-red flowers, suffused with purple, bloom in loose clusters from mid-July to August, adding a touch of tropical flair to the garden borders, 'Harvington Imperial' can also grace pots and containers, though some frost protection is advisable during severe frosts.
Grow in humus-rich, moderately fertile soil that is moist yet well-drained. Locate in a cool, sheltered spot with partial shade. Prevent summer drought and winter waterlogging. Enhance the soil with organic matter, and introduce mycorrhizal fungi (Rootgrow) during planting. In colder regions, employ a dry winter mulch like bark for added protection.