Barely cover (about 1/16").
Sow into deep pots 6-8 weeks before last spring frost. Keep at 65-70°F until germination, then grow on at 55-60°F. Avoid root-bound plugs, for they will not flourish when set out.
Recommended. Direct sow after last frost and make two additional sowings at 2-3 week intervals for an extended bloom time.
PLACEMENT & CULTIVATION
This annual makes a beautiful addition to the middle of beds and borders and informal wildflower meadows. It is a sought after cut flower as well, valued as a lacy filler that enhances the focal flowers in a bouquet. It's also a good insectary plant, as it attracts bees and many other beneficial insects to your garden. After flowering, its seeds are a favorite of birds such as goldfinches. Caution: It is possible to develop a rash or blisters from the sap when cutting on a sunny day, gloves are recommended.
1" a week, more during dry spells.
If soils are particularly poor, mix in an organic granular fertilizer once seedlings have reached 6-8" in height.
When to Cut for Bouquets:
Harvest for fresh cuts when 2-3 flowers are open on spray.