Seed Treatment
- For faster and more uniform germination:
- Soak seeds in warm water for 4–8 hours before planting to help soften the seed coat.
Sowing Instructions
- When to Sow:
- Indoors: Start seeds 6–8 weeks before the last expected frost.
- Outdoors: Direct sow in late spring once soil has warmed and the danger of frost has passed.
- Soil Requirements:
- Prefers well-draining, fertile soil enriched with compost or organic matter.
- pH range: 6.0–7.0 (slightly acidic to neutral).
- Light Requirements:
- Requires full sun (at least 6 hours daily) for strong growth and blooming.
- Sowing Depth:
- Sow seeds ¼ inch (6 mm) deep.
- Cover lightly with soil and gently firm.
- Watering:
- Keep the soil evenly moist but not soggy until germination.
- Once established, water moderately and allow the soil to dry slightly between waterings.
- Germination Time:
- Germinates in 7–14 days at an optimal temperature of 65–70°F (18–21°C).
- Spacing:
- Thin or transplant seedlings 12–18 inches (30–45 cm) apart to allow proper airflow and prevent disease.
Growing Tips
- Callistephus chinensis produces vibrant, chrysanthemum-like blooms in a wide range of colors, ideal for cut flowers, borders, and beds.
- Avoid overhead watering to prevent fungal diseases like aster wilt.
- Rotate planting locations yearly to avoid soil-borne pathogens.
- Deadhead spent flowers regularly to promote extended blooming.
This classic garden favorite adds cheerful, late-season color and thrives with just a little attention! ??