7240- Sensation mix. 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. Direct sow from early May right up until mid-June. Several sowings will result in a very long bloom period. You can also start Cosmos indoors in late March to mid-April. Seeds will sprout in 3-10 days. Optimal temperature for germination: 21-25°C (70-75°F).