Start inside 8-10 weeks before transplanting. Do not cover seed, requires light and a cool soil temperature of 13 degrees C. Transplant 1-2 weeks before last frost. Very frost tolerant when hardened off. Grows well in full sun to light shade. Space 6-12 inches depending on variety.
Pinch out growing tip to encourage branching and more blooms. Feed, water and deadhead or cut flowers for bouquets regularly.