Of all the annual flowering plants you can grow in your cutting garden (or even the back of your veggie patch), none is more productive than cosmos. They truly are a cut-and-come-again flower: The more you harvest them, the more they bloom.
A single planting will produce buckets of airy, delicate, daisy-like blossoms for many months. You can arrange them on their own or weave them into mixed bouquets. The possibilities are endless.
Cosmos are incredibly easy to grow, making them perfect for beginning gardeners. Seeds can be started indoors to get a jump-start on the season or sown directly into garden beds once the weather warms.
Either way, cosmos will bloom in just under 3 months from the date you sow them.
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To start indoors, sow seeds 4 to 5 weeks before the last spring frost, then plant seedlings into the garden once all danger of frost has passed. Be careful not to sow seed too early, because seedlings will quickly outgrow their pots before the weather has warmed enough to put them out into the garden.
Alternatively, you can sprinkle seeds in your garden once the danger of frost has passed. In about a week, you’ll see seedlings sprout up from the soil. Keep the young plants protected from slugs and snails as they are getting established since new growth is quite tender.