|Bunches of daisy-like flowers and graceful feathery foliage make them a delight in both color and texture. Attactive to birds and butterflies, they are available in two species. Cosmos bipinnatus come in pink, rose, red, white, lavender and bicolors, and Cosmos sulfureus in yellow, orange and scarlet orange. Some varieties of this fast-grower have semi-double flowers, rolled quilled petals or bicolor striped colors. Use 3- to 6-foot tall plants as background, or in wild or naturalistic gardens. Dwarf forms, 1 to 2 feet tall, are good for containers. Excellent cut flowers. Considered drought resistant, Cosmos grows best in full sun, but will grow well and flower earlier in poor, fairly dry soils. Easy to grow from seed, they seed themselves. Do not over-fertilize, unless you want lush plants with few flowers. Tall varieties require stalking. Nearly pest-free, but watch for borers or fungal diseases.
These tend to look weedy at season end. Some cultivars have double flowers, and many are shorter than the species.
Attributes - Cosmos sulphureus
Plant Type: Annual
Bloom Season: Mid Summer through Early Fall
Flower Color: Orange, Red, Yellow
Height: 1 ft. 6 in. to 7 ft.
Width: 4 ft.
Sunlight: Full Sun
Notes: Thrives in Dry Climates, Hot Climates. Container Plants, Cut Flowers, Drought Tolerant, Long Blooming, Showy Flowers. Susceptible to Aphids, Spider Mites.
Cosmos bipinnatus, Cosmos bipinnatus 'Candy Stripe', Cosmos bipinnatus 'Sensation Mixed', Cosmos bipinnatus 'Sonata', Cosmos bipinnatus 'Sonata Pink', Cosmos bipinnatus 'Sonata Pink Blush', Cosmos sulphureus 'Sunny Orange', Cosmos sulphureus 'Sunny Red'