Zinnias are without a doubt the most loved of all cutting flowers. Sow the seeds directly in the garden after danger of frost. Prevent diseases by thinning the seedlings when they’re small so they stand 10 to 12 inches apart. For cutting, choose one of the taller varieties, and harvest the flowers often by cutting long stems—the more you cut, the more the plants will branch and produce blooms! If you have a long growing season, do a second sowing in mid summer for fresh blooms that will attract butterflies and other pollinators to your garden for an extended period.