Callistephus is the botanical name for China Aster and Aster
Callistephus Germination Information

Callistephus Seed Germination How to Sow Callistephus:

  • Sow outdoors after all danger of frost is past, or sow indoors 6-8 weeks before planting outside
  • Sow indoors in fall and winter for greenhouse flowers in late winter and spring
  • Cover the seed with 4 times their thickness in soil
  • maintain a temperature within the medium of 70° F during germination which takes 10-14 days
  • Blooms appear 3-4 months from sowing
  • When sowing seed outdoors, we recommend a maximum planting depth of 4X the width of the seed

How to Grow Callistephus:
Spacing: Space 6-15 inches apart in full sun

Temperature: Plants should be grown 70° days and 50° F nights

Soil:  Keep the soil evenly moist and feed the plants moderately but keep the nitrogen levels low to deter disease.

Greenhouse: In the greenhouse, grow on with cool (60° F) nights in full sun with a rich, porous soil kept evenly moist. Mulch Asters in summer to keep the soil moist and to protect their roots from drying out. Many of the newer varieties are resistant to wilt

Appearance and Use:

Single or double blooms, ideal for cutting, are borne on this annual for borders, beds, or greenhouse growth. Dwarf varieties make excellent container plants. Singleor double-flowering annuals are 6-36 inches tall and 6-18 inches wide, with blooms of blue, white, lavender, purple, yellow, pink, or red on long cutting stems over basal foliage. The flowers, borne midsummer to frost, have a wide range of size, shape and color including daisy, pompon, chrysanthemum, and shaggy. Dark green foliage, 3 inches in length, is oval-shaped and coarsely toothed


About Callistephus:
Pronunciation:  kal-i’ste-fus chi-nen’sis
Lifecycle:  Annual
Origination: Asteraceae; native to China
Common Names: China Aster and Aster