Aster
Callistephus chinensis
Details
Plant type: annual
Planting season: spring
Height: up to 36"
Site: full sun
Site: full sun
Seed depth: 1/8"
Days to germination: 10-14 days at 70-72°F (21-22°C)
Days to maturity: 110-120 days
Plant spacing: 6-12"
Pinch: no
Days to maturity: 110-120 days
Plant spacing: 6-12"
Pinch: no
Growing Notes
Transplant (recommended) - Sow 1/8" deep into 72-cell flats or preferred seedling container 6-8 weeks before planting out. Heat and reduced daylength initiate flowering. Establish plantings early to avoid short stems.
Direct seed - Once soil temperature is 65-70°F (18-21°C). Provide support. Row cover or insect netting helps prevent the spread of Aster Yellows Virus by leafhoppers. Pinching not required.
Harvest
Fresh - Outside ray florets begin to open. Place immediately in water.