Seed 8 cm (3″) apart. Thin to 23 cm (9″) apart. Plants grow over 1 m (3-4′) tall.
Plant seeds 1 cm (½”) deep.
Full sun and a loamy soil with a pH of 6.1 – 7.5
Seeds will germinate in 6-21 days.
Pests are not usually a problem. Supports beneficial insects if allowed to flower (such as syrphid flies, which eat aphid pests).
Seed as soon as the soil can be worked in the spring and every two weeks after that until late spring, as long as the weather is cool. Sow again in mid to late August for fall crops. Sow outdoors in early spring, or fall in the south.
Provide consistent moisture. Mulch after plants are well established to maintain moisture and suppress weeds.