Cosmos bipinnatus. Reliable and well-loved single daisy shaped flowers with yellow centers bloom in white and various shades of pink. Pinching off the growing tip when the plant is about 15cm (6") tall will help keep this tall lacy plant bushy and erect. Do not overfeed, as rich soil will delay flowering. Sensation Mix cosmos seeds plant height 1.2-1.8m (4-6'). Stake these tall Cosmos in windy gardens, but in sheltered areas, this is not necessary. Deadhead (remove spent flowers) to extend the flowering period and keep plants looking their tidiest. Cosmos is quite drought tolerant so it makes a good candidate for xeriscaping. Provide some water in extreme drought. Sensation Mix won an AAS Award in 1936.
Cosmos will flower more in poor soil, rather than rich, so avoid manures and fertilizers. Pinch out the growing point when plants are around 45cm (18″) tall to encourage bushier growth and more flowering points. Water during very dry spells, but otherwise, Cosmos is well suited to xeriscaping. Seeds are easy to harvest and save.
These annual plants that are sometimes referred to as Cosmea.