Helianthemum nummularium
Helianthemum nummularium
- Native to:
- Albania, Algeria, Austria, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Corse, Czechia-Slovakia, Denmark, East Aegean Is., Finland, France, Germany, Greece, Hungary, Iceland, Iran, Ireland, Italy, Krym, Lebanon-Syria, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Poland, Portugal, Romania, Russia, Sicilia, Spain, Sweden, Switzerland, Transcaucasus, Türkiye, Türkiye-in-Europe, Ukraine
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Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cistaceae
- Genus:
- Helianthemum
- Species:
- Helianthemum nummularium
- USDA Symbol:
- HENU5
Growth Characteristics
- Height:
- 30 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- yellow, orange, pink, red, white
- Ground Cover:
- Yes
- Landscaping Shrub:
- Yes
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- prefers calcareous soils in native habitats
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–42 days
- Notes:
- Seeds require light for germination; surface sow and do not cover. Germination can be erratic.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Repeated cycles of 20C then 4C, 3 months each. Very prolonged.