key growing information

How to Grow Cilantro (Coriander)

How to grow cilantro and coriander from seed: direct sowing, spacing for leaves or seed, succession planting, bolting in heat, and harvesting leaves and seed.

By Hensley’s Seed Co. September 3, 2026

Cilantro (Coriander) - Key Growing Information

Mature planting of the culinary herb cilantro, the fresh form, or alternatively known as coriander, the dried seed form.

DAYS TO GERMINATION:

Seedlings come up in about 7–10 days at 65–70°F (18–21°C).

SOWING:

Sow directly from spring through late summer, 1/4–1/2" deep and 1/4–1/2" apart, in rows 3" or more apart. For leaves, there's no need to thin; cilantro does fine sown thickly. For coriander seed, thin to 2–4" apart. Repeat sowings every 2–3 weeks for a steady leaf supply.

LIGHT PREFERENCE:

Full sun. In most areas, plants tend to bolt in midsummer heat.

PLANT HEIGHT:

Grows about 12–18" tall.

PLANT SPACING:

1/4- 1/2".

HARDINESS ZONES:

Grown as an annual.

HARVEST:

Every stage is usable. Cut leaves once plants are established and before they flower. Green seeds are sweet and fresh-tasting and can be picked from the time they form until they turn brown and dry. Ripe seed is ready about 3 months after sowing; harvest it once it has dried on the plant.

SOIL REQUIREMENTS:

Grows best in fertile soil with good drainage.

SCIENTIFIC NAME:

Coriandrum sativum