Helianthemum nummularium (Rock Rose)
Covered with abundant, showy rose-like flowers in shades of orange, pink, yellow and white in late spring to early summer, Helianthemum nummuralium (Rock Rose) is a charming low-growing subshrub with an evergreen foliage of gray-green, lance-shaped leaves. Each flower opens for only one day, but new buds keep opening – enabling a long-lasting display (up to 2 months).
Covered with abundant, showy rose-like flowers in shades of orange, pink, yellow and white in late spring to early summer, Helianthemum nummuralium (Rock Rose) is a charming low-growing subshrub with an evergreen foliage of gray-green, lance-shaped leaves. Each flower opens for only one day, but new buds keep opening – enabling a long-lasting display (up to 2 months).
- This low-growing plant grows only 6-12 in. tall (15-30 cm) and spreads 24-36 in. (60-90 cm).
- Best in full sun ;in dry, sandy or rocky, alkaline, well-drained soils. This plant prefers cool summers and warm winters and is not reliably hardy in USDA zone 5. Drought tolerant.
- Great choice for rock gardens, coastal gardens, cottage gardens, as edging plant, ground cover or for your border fronts. Lovely on a stone wall for a cascading effect.
- Shear plants after flowering to shape and to promote new growth.
- Propagate by softwood cuttings in late spring or early summer
- Generally pest and disease free
- Native to most of Europe.
Requirements
Hardiness | 6 – 8 |
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Heat Zones | 6 – 8 |
Climate Zones | 1, 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
Plant Type | Shrubs |
Plant Family | Helianthemum – Rock Roses |
Exposure | Full Sun |
Season of Interest | Spring (Late)Summer (Early) |
Height | 6" – 1' (15cm – 30cm) |
Spread | 2' – 3' (60cm – 90cm) |
Spacing | 24″ – 36″ (60cm – 90cm) |
Water Needs | Low, Average |
Maintenance | Low |
Soil Type | Chalk, Clay, Loam, Sand |
Soil pH | Alkaline, Neutral |
Soil Drainage | Well-Drained |
Characteristics | Showy, Evergreen |
Native Plants | United Kingdom |
Tolerance | Drought, Dry Soil, Rocky Soil |
Garden Uses | Banks and Slopes, Edging, Ground Covers |
Garden Styles | Coastal Garden, Gravel and Rock Garden, Informal and Cottage |