Culture: Heat-loving plant closely related to the zinnia. Sow outdoors after danger of frost in 70–85° soil, or start indoors 6 weeks before last frost date. Tithonia sulks in the cold so don’t bring it out too soon. ~100 seeds/g.
All flowers are annuals except where noted. All flowers are open-pollinated except where noted.
Days in parentheses after a variety indicate days to first bloom.