Hollyhock
Alcea biennis
- Native to:
- Albania, Austria, Bulgaria, Czechia-Slovakia, East Aegean Is., Greece, Hungary, Krym, NW. Balkan Pen., Romania, Türkiye, Türkiye-in-Europe, Ukraine
Franz Xaver
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Malvaceae
- Genus:
- Alcea
- Species:
- Alcea biennis
- USDA Symbol:
- ALPA24
Growth Characteristics
- Life Cycle:
- Biennial | Perennial
- Growth Habit:
- Forb/herb
- Height:
- 200 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- yellow, cream
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
Propagation & Germination
- Stratification:
- None required
- Germination Time:
- 10–21 days
- Notes:
- Seeds germinate readily at 18-21°C. Light not required for germination.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Sow @ 20C. If no germination in 3 months, try 4C 1-2 months, then 20C again. Requires darkness.