HomeAll Wildflowers: Clematis-DaleaCosmos sulphureus (Tall Yellow Cosmos) Wildflower Seeds

Cosmos sulphureus (Tall Yellow Cosmos) Wildflower Seeds Reaching up to seven feet in the right conditions, with sunny yellow flowers that will brighten any landscape. Consider staking for support, or plant a mass of them to help keep them upright. Blooms best in poor soil, and is drought tolerant. Happiest in full sun, they’ll grow in part shade without getting as tall. Attracts birds, bees and butterflies. Quantity: Select the size here . . . Packet: (500 Seeds) . . . $2.50 1 Oz: (28.4g) . . . $3.60 1/4 Lb: (113g) . . . $6.72 1 Lb: (454g) . . . $25.20 5 Lb: (2.27kg) . . . $120.96 10 Lb: (4.54kg) . . . $241.92

More Info

Origin: Introduced US Flower

Other Common Names:

Duration: Annual

Bloom Time: Summer to Fall

Height: 48 in to 72 in

Spacing: -

Light: Full Sun to Part Shade

Soil Moisture: Dry to Medium

USDA Zone: 3a-9b

Germination: No pre-treatment needed. Sow seeds just below soil surface at 75F and water.

Seeds Per Oz: 4000

Reaching up to seven feet in the right conditions, with sunny yellow flowers that will brighten any landscape. Consider staking for support, or plant a mass of them to help keep them upright. Blooms best in poor soil, and is drought tolerant. Happiest in full sun, they’ll grow in part shade without getting as tall. Attracts birds, bees and butterflies.