10+
Corncockle, botanically known as Agrostemma githago, is a classic annual wildflower valued for its upright growth and simple, star-shaped blooms. It develops slender stems with narrow, gray-green leaves and produces striking purple to magenta flowers during the growing season. This plant adapts well to temperate climates and performs best in full sun with well-drained soil. Corncockle is commonly used in wildflower meadows, cottage gardens, and naturalized planting, where it establishes easily from seeds and provides seasonal color.
Features
- Upright annual with slender stems
- Produces star-shaped purple flowers
- Suitable for wildflower meadows and cottage gardens
- Adapted to sunny, well-drained conditions
- Easy to grow from seeds
Specifications
- Scientific name: Agrostemma githago
- Common name (US): Corncockle
- Seed type / variety: Purple flowering variety
- Growth habit: Upright annual
- USDA zones: 3-10 (grown as annual)
- Planting season: Spring or fall
- Growing season: Late spring to summer
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Sowing Season:
- Spring: March to May
- Fall: September to October
- Germination time and conditions: 1-2 weeks at 15-20°C
- Sunlight requirements: Full sun
- Soil requirements: Well-drained soil, tolerant of poor soils
- Watering needs: Low to moderate once established
- Mature plant size: 60-90 cm height, 20-30 cm spread
- Plant spacing: 20-30 cm between plants
