species
Helianthemum nummularium
Rock rose
Scale drawing from this record, beside a 1.7 m figure.
Helianthemum nummularium belongs to the family Cistaceae, also known as Rock rose, native to the UK. It reaches 30 cm tall and 60 cm across in about 10 years. It grows in full sun, on chalk, sand or loam soil, where the ground is neutral or alkaline and in well drained or dry conditions, and suits exposed or average positions. It tolerates coastal exposure. It flowers from June to July and is evergreen. Its RHS hardiness rating is H7 (very hardy): Below −20°C.
Assembled from the attributes recorded below.
What this plant needs
- Size at maturity
- 30 cm tall × 60 cm across, after about 10 years
- Hardiness
- H7 (RHS)
- Aspect
- Full sun
- Soil
- Chalk, Sand, Loam
- Acidity
- Neutral, Alkaline
- Moisture
- Well drained, Dry
- Exposure
- Exposed, Average
- Coastal
- Tolerates salt wind
- In the UK
- Native
When it flowers
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Evergreen — it holds its leaves through the winter.
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