Cosmos Purity Cosmos Bipinnatus is a new hybrid of White Cosmos that is half-hardy, branching annual native to Central America. Cosmos Purity seeds have to be just gently covered with soil, and also called Mexican Aster and Cut Leaf Cosmos, this tall variety can reach up to 60 inches in height. Cosmos Purity features mid-green, fern-like, airy foliage and blooms with extra large, up to 4 inches in diameter, pure white, saucer-shaped flowers with yellow centers.
Cosmos Purity makes an excellent blooming screen or background for short plants and Cosmos is a fantastic container and border plant. Cosmos Bipinnatus seeds are very easy to germinate, and the growing Cosmos prefers full sun and average or poor, somewhat sandy, dry or moist, well-drained soil. The extra large flowers and long, sturdy stems make Cosmos a superb cut flower.
Height: 36-60 Inches
Bloom Season: Summer/Fall
Environment: Sun/Partial Shade
Soil Type: Average/Poor/Dry/Medium well-drained, pH 6.1-7.4
USDA Zones: All Regions of North America
Sow Indoors: Spring (2-4 weeks before last frost)
Sow Outdoors: Spring/Summer (Zones 1-6) Fall (Zones 7-11)
Seed Depth: 1/16 Inch
Germination Time: 14-21 Days