Saxifraga 'Kaspar Maria Sternberg' (× _petraschii_) (7)
saxifrage 'Kaspar Maria Sternberg'
A low-growing, evergreen perennial forming a cushion of tight rosettes of grey-green leaves. One to three, upward-facing white flowers with yellow centres are borne in spring on short stems
Size
Ultimate height
Up to 10cmTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | White | Green Grey Silver | ||
|---|---|---|---|---|
| Summer | Green Grey Silver | |||
| Autumn | Green Grey Silver | |||
| Winter | Green Grey Silver |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing
Exposure
Exposed Hardiness
H5Botanical details
- Family
- Saxifragaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Matforming
- Genus
Saxifraga can be annuals, biennials, evergreen or herbaceous perennials, mostly mat-forming in habit, with simple or palmately lobed leaves and starry or rounded flowers which may be solitary of in panicles or cymes
- Name status
Accepted
- Horticultural Group
- Porphyrion section saxifrages are compact, cushion or mat-forming evergreen perennials with small, usually lime-encrusted leaves, and 5-petalled white, yellow or pink flowers in early summer
How to grow
Cultivation
Grow in moderately fertile, very well-drained, neutral to alkaline soil; keep roots moist. Tolerant of full sun in cool areas but protect from leaf scorch in warm areas
Propagation
Propagate by detaching rosettes and rooting as cuttings in late spring or early summer
Suggested planting locations and garden types
- Gravel garden
- Patio and container plants
- Rock garden
Pruning
No pruning required
Pests
May be susceptible to aphids, slugs, vine weevil and red spider mite
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.