Helianthemum
Helianthemum nummularium
Spreads wider than it stands, hugging hot dry ground — though a hard frost can cut young plants back.
Light Full sun
Height 25 cm
Spread 17.7 in
Spacing 45 cm
Spacing & sowing
- Plant spacing
- 17.7 in
- In-row spacing
- 17.7 in
- Between rows
- 22 in
- Square-foot density
- Not suited to SFG
Growing
- Type
- Shrub · Perennial
- Botanical family
- Mixed / other
- Sunlight
- Full sun
- Feeding
- Rose & flower
- Frost tolerant
- Yes
- Flowering
- May
Through the year
- Mar–May Spring Growth
- May–Jul Flowering
- Jul–Dec Growing
- Jan–Mar Growing
Companions
Aubrieta, Thyme, Dianthus, Lavender
Pests & problems
- Powdery mildew Powdery mildew through humid spells
- Root & crown rot Root rot in waterlogged ground
- Dieback on young plants after hard frost
The Cottage Garden Companion — the gardener's herbarium at cottagegardencompanion.com