Overview
Roscoea purpurea is a perennial herbaceous in the genus Roscoea, part of the Zingiberaceae family. Roscoea purpurea grows best in partial shade, and tolerates moist and well-drained soils. Its UK hardiness is rated H5. Suggested uses include rock gardens and woodland gardens. It is native to Himalaya.
About
Roscoea purpurea is a perennial herbaceous member of the ginger family grown for its purple, orchid-like flowers. Native to the Himalaya, it flowers in the UK from June to August. It prefers a sheltered position in partial shade with moist, well-drained soil. It suits rock and woodland garden planting where summer blooms can be shown to advantage.
Wikipedia contributors, CC BY-SA 4.0 — Roscoea purpurea
About the genus
Roscoea is a genus of perennial plants of the family Zingiberaceae. While most members of the ginger family are tropical, Roscoea species are native to cooler mountainous regions of the Himalayas, China and its southern neighbours. Roscoea flowers superficially resemble orchids, although they are not related.
Wikipedia contributors, "Roscoea", CC BY-SA 4.0 — Roscoea
In the garden
Roscoea purpurea is a perennial herbaceous plant in the Zingiberaceae, native to the Himalaya. Unlike most ginger-family species that favour tropical climates, Roscoea species are adapted to cooler, mountainous sites; R. purpurea is cultivated for its large, often purple to mauve blooms that appear in summer (June to August). Plant in partial shade where soil remains moist but drains freely; a sheltered spot protected from drying winds and late frosts suits it best. Soil should be kept consistently moist through the growing season without remaining waterlogged. It is hardy to H5, meaning it tolerates typical UK winters in most regions provided it has protection from exposed, windy positions. Use purple roscoea in rock gardens or woodland borders, where its summer flowers carry colour beneath trees and alongside ferns and other shade-tolerant perennials. Because the species favours cool, sheltered conditions, placing it where it receives morning sun or dappled light will extend flowering and reduce stress on emerging shoots.
Growing conditions
Best soil and position for Roscoea
- Sunlight
- partial shade
- Soil type
- moist, well-drained
- Soil moisture
- moist
- Exposure
- sheltered
- UK hardiness
- H5
Plant details
Roscoea purpurea size, habit and characteristics
- Plant type
- perennial herbaceous
- Suggested uses
- rock gardens, woodland gardens
- Native to
- Himalaya
Care notes
Pruning and caring for Roscoea purpurea
- Cultivation
- Plant in humus-rich, well-drained soil in a sheltered spot with partial shade. Avoid waterlogging.
- Pruning
- Remove dead foliage after flowering to tidy the plant.
- Propagation
- Division in spring or seed
Frequently asked questions
How do I grow Roscoea purpurea?
Plant in humus-rich, well-drained soil in a sheltered spot with partial shade. Avoid waterlogging.
Where is the best place to plant Roscoea purpurea?
Roscoea purpurea prefers partial shade. It suits sheltered positions.
What soil does Roscoea purpurea need?
Roscoea purpurea grows best in moist and well-drained soil. Aim for soil that stays moist.
How do I prune Roscoea purpurea?
Remove dead foliage after flowering to tidy the plant.
Is Roscoea purpurea hardy in the UK?
Roscoea purpurea has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Roscoea purpurea?
Division in spring or seed.