When to Sow Outside: 1 to 2 weeks after your average last frost date, when soil temperature is at least 65°F. Mild Climates: Sow in late summer for winter bloom.

When to Start Inside: RECOMMENDED. 6 to 8 weeks before your average last frost date. Mild Climates: Start in late summer for winter bloom.

Days to Emerge: 10–15 Days

Seed Depth: ⅛"

Seed Spacing: A group of 4 seeds every 6" - 12"

Thinning: When 2" tall, thin to 1 every 6"–12"

Special Care: Mulch plants (avoid mulch touching stems) to help keep shallow aster roots consistently moist. Staking may be necessary. To reduce the possibility of common diseases, avoid wetting leaves when watering, and ensure good air circulation with proper thinning and spacing.