Days To Germination: 5-10
Planting Depth: 1/4 inch
Spacing, Plant: 8-10 inches
Plant Height: 15 Inches
Light: Full Sun
Sow early indoors / under cover with warmth 4-6 weeks prior to the last frost in individual pots or trays. Cover seed with 1/4 inch fine soil. Keep soil moderately moist and warm during germination.
Can be sown directly outdoors after danger of frost has passed through early summer.
Thin or transplant to 8-10 inches apart when plants are 2 to 3 inches tall.
Gradually acclimatise outside after all danger of frost has passed.
Cosmos grows best in full sun in ordinary garden soil and may re-sow itself.
Fairly drought resistant, water only when soil is dry for an extended period.