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Cosmos bipinnatus (Asteraceae)
A hardy, erect annual requiring very little moisture once established. A native of Mexico, it can easily adapt to all regions of the United States. The attractive flowers are a mixture of stunning deep crimson, soft pink and pure white. Leaves are deeply dissected, almost threadlike in appearance. Rich, fertile soils tend to produce extremely tall, lanky plants. Requires full sun. Sow in early spring after the danger of frost has passed, seedlings are not winter hardy. A real value for the money.
Average planting success with this species: 80%
Height: 2-3 feet
Germination: 7-21 days
Optimum soil temperature for germination: 70F-80F
Sowing depth: 1/16"
Blooming period: April-November
Average seeds per pound: 89,000
Seeding rate: 15 lbs. per acre
1 oz Covers: 182 sq. ft.
Suggested use: Roadsides, waste areas, mixtures, floral gardens.
Miscellaneous: Blooms quickly. Will need to be replanted each spring for continued success.