Hardy, but short-lived perennial. Usually grown as an annual.
Season & Zone
Exposure: Full sun
Zone: 1-10, winter hardy in 8-10
Direct sow outdoors in spring after last frost - mid-March on the coast, or direct sow in autumn. It can be started indoors, but does not like being transplanted.
Sow seeds 5mm (¼") deep, spaced 20-25cm (8-10") apart. Seeds should sprout in 14-21 days.
Grow in any average, well-drained soil. Deadhead regularly to prevent self sowing. Very likely to self sow.