Not the plant you're looking for? Search over 300,000 plants
Alpine Rockery
Isotoma fluviatilis
A low-growing, creeping perennial forming a dense, leafy mat. In spring and summer it produces starry, white or pale blue flowers on short stalks. Grow on a rock garden or in cracks between paving
Size
Ultimate height
Up to 10cmTime to ultimate height
1–2 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | White Blue | Green | ||
|---|---|---|---|---|
| Summer | White Blue | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
- Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H3Botanical details
- Family
- Campanulaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Matforming
- Genus
Isotoma can be annuals or perennials, with pinnately lobed leaves and long-tubed, salver-shaped flowers
- Name status
Correct
How to grow
Cultivation
Grow in moderately fertile, moist but well-drained soil in full sun
Propagation
Propagate by division
Suggested planting locations and garden types
- Rock garden
- Low Maintenance
- Ground cover
- Underplanting of roses and shrubs
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Generally disease-free
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.