Overview
Costus scaber is a clump forming conservatory greenhouse in the genus Costus, part of the Costaceae family, with evergreen foliage. Costus scaber grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H1a. Suggested uses include conservatory and greenhouse.
About
Costus scaber is a species of plant in the family Costaceae. Its native range is Mexico to Tropical America. In Costa Rica, Costus scaber is grown in homegardens and used to treat multiple medical conditions. In Trinidad, it is used as an ingredient in treating dogs for snakebite. Grow it in full sun and loam soil. In UK gardens it needs tropical warmth and glass protection in the UK (RHS H1a). It works well for conservatory and greenhouse. It tolerates neutral soils, moist but well-drained conditions and south-facing aspects. Plant in well-drained soil in a suitable position. Water during establishment.
Wikipedia contributors, CC BY-SA 4.0 — Costus scaber
Growing conditions
Best soil and position for Costus
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H1a
Plant details
Costus scaber size, habit and characteristics
- Plant type
- Conservatory Greenhouse
- Habit
- Clump forming
- Foliage
- Evergreen
- Suggested uses
- Conservatory and greenhouse
Care notes
Pruning and caring for Costus scaber
- Propagation
- Seed, division in spring
- Pest resistance
- Susceptible to glasshouse red spider mite under glass
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Costus scaber?
Costus scaber prefers full sun. It suits sheltered positions.
What soil does Costus scaber need?
Costus scaber grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Costus scaber hardy in the UK?
Costus scaber has an RHS hardiness rating of H1a, meaning it needs tropical warmth above 15°C and must be grown under glass in the UK.
How do I propagate Costus scaber?
Seed, division in spring.
