Plectranthus ernstii
bonsai spurflower
A compact, frost-tender, semi-succulent to 25cm tall with swollen, jointed stems up to 5cm in diameter at the base. Aromatic, semi-succulent leaves are ovate to triangular with rounded teeth and are slightly hairy. Flower spikes up to 12cm long bear small, two-lipped, pale lilac to whitish flowers with darker markings in summer
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Size
Ultimate height
0.1–0.5 metresTime 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 | Blue Purple White | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
ShelteredDrought resistance
Yes Hardiness
H2Botanical details
- Family
- Lamiaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Bushy
- Genus
Plectranthus can be annuals, evergreen perennials or shrubs, with opposite, ovate or heart-shaped, sometimes fleshy leaves, and 2-lipped, tubular flowers borne in whorls forming spikes or panicles
- Name status
Correct
- Plant range
- E South Africa
How to grow
Cultivation
Grow in a well-drained soil in full sun or partial shade; may be moved outside after risk of frost has passed
Propagation
Propagate by seed or from stem cuttings
Suggested planting locations and garden types
- Gravel garden
- Patio and container plants
- Rock garden
Pruning
No pruning required
Pests
Generally pest-free
Diseases
May be susceptible to root rots if over-watered
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