New! Easy-to-grow cosmos for gardens and pollinator plantings.Vigorous plants flower over a long season, creating rich color in the garden and a vibrant food source for bees, butterflies, and other pollinators. Plant architecture is tall but open and airy, so plants are less prone to lodging or falling over than Cosmos bipinnatus types. Excellent choice for color in summer gardens. 1 1/2–2" wide, double and semidouble blooms in shades of orange and gold. Sometimes used as cut flowers, though they do not last long in the vase, dropping petals after 5 days. Flowers are also used to create natural dyes for fiber and fabrics. Plants readily self-seed. Also known commonly as Dyer’s cosmos and sulfur cosmos. Native to the Americas and Mexico. For mass plantings, sow at 5 oz./1,000 sq.ft. or 14 lb./acre. Ht. 40–48". Avg. 3,800 seeds/oz. Packet: 200 seeds.
DAYS TO GERMINATION: 7-10 days at 68-72°F (20-22°C)
SOWING: Transplant – Sow into 50-cell plug flats, or preferred seedling container, 5-7 weeks before last frost, covering seeds lightly. Harden off and transplant outdoors after last frost. Direct seed – Sow after last frost, once soil temperature is above 60°F (16°C), covering seeds lightly. Pinching encourages branching.
LIGHT PREFERENCE: Sun.
PLANT HEIGHT: Varies. Tall varieties may benefit from some wind protection, such as Hortonova, used as horizontal support.
PLANT SPACING: 9-12". Wider spacing creates stronger, thicker stems.
HARDINESS ZONES: Annual.
HARVEST: Petals just opening, but not yet flattened. Deadheading is required to have blooms all summer.
SOIL REQUIREMENTS: Any soil.
USES: Excellent cut flowers. Beds, containers, and mass plantings.
SCIENTIFIC NAME: Cosmos spp.
Shipping is an additional 15-29 business days depending on location. Shipping time will be provided at checkout.
If seeds fail to leave China, we will refund your payment 100%. But if seeds fail to reach you due to customs problem on your side which we were not informed in advance, we will not be able to bear any loss, and no refund will be made.
We sell only viable plants seeds online, and test germination of our seeds from time to time. So we will not be able to refund for seeds that clients fail to germinate, unless we are convinced that it's truly problem of our seeds.
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