Cosmos Flower Tall. Cosmos Seeds Simple delicate flowers form on tall plants. Customer favorites include Sulphur Cosmos.
After that though your flowers should continue to bloom until the next frost. May 18 2021 Depending on the type of flower cosmos can grow anywhere between 18 to 60 inches tall. Sulphureus 10-12 inches apart while the taller varieties C.
Some of the more recent cultivars tend to be shorter more orangy and with smaller flowers.
Bipinatus prefer 1- 2 feet in between. If you are growing cosmos from seeds be mindful that it takes about 7 weeks to first bloom. Foliage is fernlike giving the cosmos an airy appearance as the blooms sway in the summer. The flowers are found in many breathtakingly beautiful colors including white maroon solid pink and pink with flares in deep pink color.