Petrocosmea iodioides
violet petrocosmea
P. iodioides is a tender, hairy, evergreen perennial producing a rosette of rounded, fleshy leaves with sunken veins. Blue-purple flowers with a small hood and large lower lip are produced in small clusters on dark red, upright stems in summer
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Size
Ultimate height
Up to 10cmTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Purple | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered Hardiness
H2Botanical details
- Family
- Gesneriaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Bushy
- Genus
Petrocosmea are evergreen perennials producing low rosettes of fleshy, often felted, lance-shaped or rounded leaves. Five-lobed, tubular to bell-shaped flowers are produced in small clusters in spring
- Name status
Correct
- Plant range
- China
How to grow
Cultivation
Grow in a shallow pot of very well-drained compost in a cool greenhouse or alpine house, in semi-shade, with a humid atmosphere
Propagation
Propagate by seed or by leaf cuttings
Suggested planting locations and garden types
- Patio and container plants
Pruning
No pruning required
Pests
May be susceptible to aphids and glasshouse whitefly
Diseases
Generally disease-free
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