It is grown as an annual though in its native habitat it is a perennial. Tithonia rotundifolia can grow up to 1.8m or 6ft tall. It is a branching plant. It flowers in late summer and early autumn.
Tithonia rotundifolia produces bright orange flowers with yellow centers. The flowers attract bees, pollinators, and other beneficial insects. Grow Tithonia rotundifolia in the sun. Plant it in moderately fertile, but well-drained soil. Shelter it from the wind.
Cut it back, after the flowering season is done. Propagate by seed in spring. Tithonia rotundifolia is generally disease-free. Watch out for slugs and snails when it is young.