The plant, in flower, can reach three feet high. Benefits from light shade in warmer weather.
Space plants four inches apart.
If you want to harvest the leaves, fertilize a week after planting with fish emulsion to provide extra nitrogen. Use a balanced organic fertilizer when you want to harvest for seed. Sow seed outdoors in early spring. If you want a regular supply of cilantro, sow every two weeks through the summer, as plants bolt fairly quickly. For leaves, plant slower-bolting cultivars.