10+
Sweet William is a cool-season flowering plant known for its compact, clump-forming growth and dense clusters of small blooms. It develops sturdy stems and narrow foliage, producing flowers during the growing season. This plant grows well in temperate climates and performs best in full sun to partial shade with well-drained, moderately fertile soil. Sweet William establishes steadily and is suitable for garden beds, borders, and container planting, where it provides structured growth and seasonal flowering.
Features
- Compact plant with clump-forming growth habit
- Produces dense clusters of small flowers
- Suitable for cool to temperate climates
- Adaptable to garden beds, borders, and containers
- Provides structured growth and seasonal flowering
Specifications
- Scientific name: Dianthus barbatus
- Common name (US): Sweet William
- Seed type / variety: Open-pollinated
- Growth habit: Upright, herbaceous biennial (often grown as annual)
- USDA zones: 3–9
- Planting season: Spring and fall
- Growing season: Spring to early summer
- Sowing Season: February to April, September to October
- Germination time and conditions: 7–14 days at 18–22°C
- Sunlight requirements: Full sun to partial shade
- Soil requirements: Well-drained, moderately fertile soil
- Watering needs: Moderate, consistent moisture
- Mature plant size: 30–60 cm height, 20–30 cm spread
- Plant spacing: 20–25 cm between plants
