Cosmos Flower Planting Time
Hot dry conditions along with poor to average soil are optimum conditions for growing cosmos.
Cosmos flower planting time. Cosmos bipinnatus is a lovely annual suited for a cottage garden style. Seed packets usually recommend precise spacing such as at two foot intervals but you will get a better display if you simply scatter the seeds and let the plants support each other as they grow. Cosmos are half hardy annuals that grow flower set seed and die all in one year but unlike hardy annuals they can t withstand low temperatures. Cosmos can be direct sown in the spring when the soil has warmed and then again in august.
Depending on the type of flower cosmos can grow anywhere between 18 to 60 inches tall. Thin to 8 inches 20 cm apart in all directions for dwarf varieties. Cosmos tetra versailles seeds you ll get 500 non gmo hand packed seeds that produce 2 to 3 foot plants that bloom in about 80 days. The annuals are particularly effective when massed and provide flowers for cutting over a period of months.
If growing in pots pot on when the seedlings are large enough to handle. Lets take a look at when and how to plant cosmos. Cosmos are one of the easiest plants to grow from seed and especially useful for new gardeners. Cosmos typically germinate in 7 21 days at 75 degrees fahrenheit followed by flowering in about 50 60 days.
Scatter seeds of the cosmos onto a bare area in the location where you wish to have growing cosmos. Sow seed in early spring directly into the soil where you want your cosmos to grow or into small pots or modules filled with free draining seed compost. Plant out in late april may after the danger of frost has passed. Sow cosmos in early spring so the plants can become established before hot weather comes.
They re quick and easy to grow from seed flowering in as little as 12 weeks and can be added to borders and pots for a burst of showy colour. Cosmos sonata and antiquity are perfect for pots. Both the perennial cosmos atrosanguineus and the annual cosmos are upright plants making excellent additions to a summer border. When planting cosmos flowers locate them in soil that has not been heavily amended.
After that though your flowers should continue to bloom until the next frost. If you are growing cosmos from seeds be mindful that it takes about 7 weeks to first bloom. Cosmos plants are usually grown from seed. Plant the seedlings 10in apart keep them well watered and they ll be in flower by early july and if deadheaded flower reliably until october.
Plant seeds in prepared soil about 2 inches 5 cm apart and one half inch 1 cm deep. Once planted this annual flower self seeds and will provide more cosmos. Cosmos also can be started indoors in containers and set out when the seedlings have at least five leaves or purchased as bedding plants.
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