Start seeds indoors 4/7. Seeds need light to germinate so press them gently into the top of the soil. Germinate at 72°. Keep seeds lightly moist but not too wet. Days to germination: 5-10. Alternatively, directly sow seeds outside after risk of frost (after 5/21), ¼” deep, 6-9” apart. Thin plants to final spacing about 15” apart.
Harvest stems as a cut flower, if desired.
Wait for petails to fall from flower and seedhead (looks like a pincussion) to become tan in color. Cut seedheads into paper bag once. Dry further inside, then rub the seed head to remove seeds.