Cosmos Flower When To Sow

If you want to get a head start on your cosmos before the weather warms enough plant your seeds in a tray indoors.

Cosmos flower when to sow. After that though your flowers should continue to bloom until the next frost. The leaves are simple pinnate or bipinnate and arranged in opposite pairs the flowers are produced in a capitulum with a ring of broad ray florets and a center of disc florets. 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.

It takes about 50 to 55 days for the seeds to germinate grow and start blooming. If you are growing cosmos from seeds be mindful that it takes about 7 weeks to first bloom. Sow seeds outdoors at a depth of 1 16 inch or indoors five to six weeks before the expected date of last frost.

You don t want to fertilize much because you ll end up with lots of foliage and not many flowers. Once planted this annual flower self seeds and will provide more cosmos flowers in the area for years to come. Start 4 to 6 weeks before you expect to be able to plant your cosmos outside.

Cosmos is one of the easiest flowers to grow from seed that is directly sown in the garden bed. Depending on the type of flower cosmos can grow anywhere between 18 to 60 inches tall. Bipinatus prefer 1 2 feet in between.

Hot weather and hot soil are the triggers that get cosmos seeds going. Plan to stake your cosmos if plants get too tall and gangly. They are even drought tolerant.

A diversely planted garden even in a pot or tub will reduce the likelihood of an imbalance in pest insects. Either sow cosmos seeds outdoors after danger of frost has passed or for an early start on summer blooms sow seeds indoors four to five weeks before the last spring frost date. This low maintenance plant tolerates fairly poor well drained soil with a ph between 6 0 and 8 5.