Weekend Gardener Your Weekly Electronic Gardening Guide
Practical Horticulture for Busy People.

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About This Plant...
Genus and species: Cosmos sulphureus; Cosmos bipinnatus
Plant type: warm-season annual
Height: 1-2 feet (C. sulphureus); 3-5 feet (C. bipinnatus)
Location and soil: sun; tolerates poor soil
Uses: cutting, bedding, border, background
Bloom time: late spring-early fall
Color range: orange, yellow (C. sulphureus); pink, red, white (C. bipinnatus)
Indoor Sowing...
Time needed to reach transplant size: 4 weeks
When to transplant to garden: after last heavy spring frost
Outdoor Sowing...
When to sow outdoors: after last heavy spring frost
Other Sowing Guidelines...
Approx. germination time: 15 days
Germination temp.: 75-80 degrees F.
Sowing Depth: 1/8 inch
Needs light or dark to germinate: -
Transplanting Guidelines...
Spacing between plants: 12 inches
Growing On...
Growing tips: tall varieties need staking; tolerates light frost

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