The listing, 10+ Cosmos sulphureus (Tall Yellow Cosmos) Wildflower Seeds has ended.
This auction is for 10+ Tall Cosmos seeds
About Tall Yellow Cosmos: Because of their Mexican heritage, these bright annuals meet high heat and drought conditions with native beauty and vigor.
Tall Yellow Cosmos Germination: In early spring or after the last frost, scatter the seeds on the surface of loose soil. Keep the soil lightly moist until germination, which should take place within 10-20 days at soil temperatures from 65-75 degrees F. Seedlings do not need to be thinned, but can be transplanted if they appear too crowded. Since these seeds germinate quickly in warm soil, they can be sown at any time before midsummer for another crop of flowers. To start the seed indoors, sow on the surface of a flat 6-8 weeks before the last frost of spring; keep the soil evenly moist and at a temperature of 70-75 degrees F until germination. Keep the soil fairly dry after the seedlings appear; when there is no chance of frost, transplant them outdoors. The soil does not need to be rich, but it must be well-drained; light shade is tolerated, but will dramatically lessen the amount of blooms.
Growing Tall Yellow Cosmos Seeds: As soon as seedlings appear, only water them in very dry weather. This flower must not be over-watered, and thrives in drought conditions and heat; if prolonged drought occurs, give the plants one deep watering. If blooming begins to decrease, cut the plant back to 12” for new growth; more blossoms will come in about 4 weeks. If allowed to self-seed, this flower will produce a new crop of flowers next year. This flower attracts birds, butterflies, and bees.
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