Yellow Hornpoppy
Glaucium flavum
- Native to:
- Albania, Algeria, Baleares, Belgium, Bulgaria, Canary Is., Corse, Denmark, East Aegean Is., France, Germany, Greece, Iran, Ireland, Italy, Kriti, Krym, Lebanon-Syria, Libya, Morocco, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Palestine, Poland, Romania, Sardegna, Sicilia, Sinai, Spain, Sweden, Transcaucasus, Tunisia, Türkiye, Türkiye-in-Europe
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Papaveraceae
- Genus:
- Glaucium
- Species:
- Glaucium flavum
- USDA Symbol:
- GLFL
Growth Characteristics
- Life Cycle:
- Biennial
- Growth Habit:
- Forb/herb
- Height:
- 90 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- yellow, orange
Garden & Ecology Notes
- Wildlife Value:
- bees
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- sandy, nutrient-poor, well-drained soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- thrives in coastal and disturbed areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate best at cool temperatures around 15-20°C. Light may improve germination.
The above propagation data sourced from Claude AI
ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. Requires darkness.