Streptocarpus 'Leah'
Cape primrose 'Leah'
An evergreen clump-forming perennial with long, thick dark green leaves and long, thin flower stalks which produce dark, velvety plum-red flowers with white edges and a white throat from Spring through to the Autumn. An ideal houseplant
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Red White | Green | ||
|---|---|---|---|---|
| Summer | Red White | Green | ||
| Autumn | Red White | Green | ||
| Winter |
Position
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Sheltered Hardiness
H1CBotanical details
- Family
- Gesneriaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Streptocarpus can be annuals, perennials or subshrubs, with usually wrinkled, lance-shaped to rounded leaves and clusters of tubular to trumpet-shaped flowers with 5 spreading lobes, often borne throughout the year
- Name status
Unresolved
How to grow
Cultivation
Grow as a houseplant in free-draining compost on an east or west-facing windowsill, or grow in a temperate or warm greenhouse in bright filtered light with shade from hot sun. Water sparingly, preferably from the bottom, as compost dries in winter and in the growing season water freely allowing compost to dry out between waterings; feed fortnightly with a high-potassium fertiliser. See Streptocarpus cultivation
Propagation
Propagate by leaf cuttings or by division
Suggested planting locations and garden types
- Houseplants
- Patio and container plants
- Conservatory and greenhouse
Pruning
Remove faded flower stems
Pests
May be susceptible to glasshouse leafhoppers, mealybugs, thrips, vine weevil and tarsonemid mite
Diseases
May be susceptible to grey moulds (botrytis) or powdery mildews
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.