Plant 15-46 cm (6-18″) apart.
6 mm (¼”)
Full sun. Loamy, sandy soil. Soil pH 5.5-7.5.
Seeds will sprout in 4-7 days
Bacterial and fungal spots, powdery mildew, and bacterial wilt may affect zinnias. Minimize wetting of foliage to avoid disease. Caterpillars, mealybugs, and spider mites can also be problems.
Sow indoors in March for outdoor planting in April after last frost.
Cultivate or mulch to control weeds. Water the soil well during dry weather, avoid overhead watering.
60-70 days from seed to flower