Zinnias are very easy to grow, they come in a wide range of colors, and they have long stems making them perfect for flower arrangements. Zinnias thrive in full sun and can tolerate quite a bit of heat, which makes them the perfect summer flower.
Zinnia seeds can be planted directly into the garden when the soil has warmed to 70 degrees and all danger of frost has passed. Sow the seeds 1/4" deep and keep moist until germination. Thin plants to about 10" apart.
To get a jump on the season it is best to start zinnias indoors about 6 weeks before the last average frost date for your area. Sow seeds in seedling flats and cover lightly with soil. Keep moist until germination, which should occur within 5 days at 80 degrees. A heat mat will aid in the process of germination. Plant seedlings outside in early summer after all danger of frost has passed.
Well-draining rich fertile soil
Avoid watering with overhead irrigation as it can damage the flowers and cause spotting.
Click on the photos to learn more about each variety