Choose a sunny location with at least 6 hours of direct sunlight
Use well-draining soil
Sow seeds directly outdoors after the last frost, or start seeds indoors 4 to 6 weeks earlier
Plant seeds about 1/4 inch deep
Space plants according to the variety, usually 6 to 18 inches apart
Water after planting and keep soil lightly moist until seedlings are established
Water at the base of the plant when the top inch of soil is dry
Avoid overwatering
Remove spent flowers regularly to encourage more blooms
Fertilize lightly if needed
Pinch back young plants to promote bushier growth
Protect from slugs, aphids, and spider mites if needed
Harvest flowers when fully open if using for cutting or drying
Remove plants at the end of the growing season after frost kills them