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Astrantia major, commonly known as great masterwort, is a herbaceous perennial valued for its clump-forming growth and intricate, star-like flower heads. It develops upright stems with divided foliage and produces blooms in shades of pink, red, and white during the growing season. This plant adapts well to temperate climates and performs best in partial shade with moist, well-drained, fertile soil. It is commonly used in borders, woodland gardens, and naturalized planting, where it establishes gradually from seeds under suitable conditions.
Features
- Clump-forming perennial with upright growth
- Produces star-like flower heads in mixed colors
- Suitable for borders and woodland garden settings
- Adapted to partial shade conditions
- Prefers moist, well-drained soil
Specifications
- Scientific name: Astrantia major
- Common name (US): Great Masterwort
- Seed type / variety: Mixed colors
- Growth habit: Upright, clump-forming perennial
- USDA zones: 4-7
- Planting season: Fall or early spring
- Growing season: Late spring to summer
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Sowing Season:
- Fall: September to November
- Early Spring: February to March
- Germination time and conditions: 4-8 weeks at 15-20°C; cold stratification may improve germination
- Sunlight requirements: Partial shade to full sun (cool climates)
- Soil requirements: Moist, well-drained, fertile soil
- Watering needs: Moderate to high, prefers consistent moisture
- Mature plant size: 45-90 cm height, 30-60 cm spread
- Plant spacing: 30-45 cm between plants
