Big-Flower Broom
Chamaecytisus supinus
- Native to:
- Austria, Bulgaria, Czechia-Slovakia, France, Germany, Greece, Hungary, Italy, NW. Balkan Pen., Poland, Romania, Spain, Switzerland, Türkiye-in-Europe
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Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Chamaecytisus
- Species:
- Chamaecytisus supinus
- USDA Symbol:
- CHSU22
Growth Characteristics
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- may,jun,jul
- Bloom Colors:
- yellow
- Landscaping Shrub:
- Yes
Garden & Ecology Notes
- Wildlife Value:
- bees
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from root crown after fire or cutting. Typical of broom family fire response.
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:
- native to rocky, calcareous slopes
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Scarification:
- Seed coat scarification required before sowing
- Germination Time:
- 14–42 days
- Notes:
- Scarification of hard seed coat improves germination. Seeds may also benefit from hot water treatment before cold stratification.
The above propagation data sourced from Claude AI