Seed 2½ cm (1″) apart. Gradually thin to 15 cm (6″) spacings.
Plant seeds 6 mm (¼”) deep.
Full sun is best, but will tolerate some shade. Prefers rich humusy soil with pH of 6 to 6.8, but will tolerate wide variety of conditions.
Seeds will germinate in 5-7 days.
Aphids, cabbage worms, flea beetles, slugs
Direct sow from April to September outdoors or October to March under glass.
Slow bolting by providing summer shade and regular moisture.