Description
Hardiness zone.7-10.Grow.Sow indoors in March-April in moist well drained compost just covering with a sprinkling of fine compost. Germination normally takes 7-14 days at a temperature of 70F..Water.Once established, you will not need to water your cosmos plants unless there is a prolonged drought..Temperature and Humidity.Hot weather is ideal for cosmos, and they thrive in any humidity level..Self-seeding.Grow from seed and enjoy growing with your family.