Seed to Harvest Herb Guide
How to grow cilantro
A practical guide to direct sowing cilantro, protecting leafy growth from heat, recognizing bolting, harvesting fresh stems, and ripening coriander seed.
Before you begin
Cilantro is one plant with two distinct harvests.
Cool-grown lower leaves provide the familiar cilantro flavor. As heat and long days trigger bolting, the plant develops feathery foliage, white flowers, and round fruits that dry into coriander seed.
Cilantro at a glance
The path from fresh leaves to coriander seed
Select any milestone to jump directly to its full instructions.
Establishment
Direct sow where the taproot can remain
Cilantro transplants poorly once roots are established. A fine seedbed, steady moisture, and cool soil produce the most reliable stand.
Prepare loose, drained soil
Choose full sun in cool weather or afternoon shade where heat arrives quickly. Work in modest compost and rake smooth.
- Avoid soggy low spots.
- Skip heavy nitrogen.
- Use a deep container if potted.
Sow 1/4–1/2 inch deep
Plant the round fruits, firm the row gently, and maintain even moisture. Sprouts commonly appear in 7–14 days.
Thin without disturbing roots
Snip extras to leave plants 6–8 inches apart for mature leaf harvest, or keep a closer stand for baby leaves.
- Water after thinning.
- Mulch lightly as weather warms.
- Keep early weeds small.
Ongoing care
Preserve leafy growth with cool roots and steady moisture
No method stops mature cilantro from flowering forever, but reducing stress can protect leaf quality and delay premature bolting.
Water evenly
Keep soil consistently moist without saturation, especially during emergence and rapid leaf growth.
Shade hot afternoons
Use afternoon shade or light shade cloth when temperatures rise abruptly.
Cool the roots
A light organic mulch slows moisture loss and moderates soil temperature.
Choose the flower goal
Harvest bolting plants for leaves or let selected stems bloom and mature coriander seed.
Growth checkpoints
Read the leaf shape to know what comes next.
The change from rounded leaves to feathery foliage is the clearest bolting signal.
Seedlings emerge
Paired narrow cotyledons appear along the moist row.
Rounded leaves fill
Broad lower foliage reaches its prime leafy harvest.
Foliage turns feathery
The center rises and finely divided upper leaves develop.
Seed turns brown
Round green fruits dry to tan-brown aromatic coriander.
Text-only diagnostics
Diagnose cilantro problems early
Match the symptom, then open the card for prevention and the next practical action.
GerminationPoor or uneven emergenceFew seedlings appear or sprouts form in scattered patches
Use fresh seed, maintain even moisture, avoid overheated soil, and sow at a consistent shallow depth.
Heat stressPremature boltingThe center rises and rounded leaves turn fine and feathery
Harvest promptly, provide afternoon shade and steady moisture, and favor cooler planting periods.
PestAphids or leaf minersSticky curled tips or pale winding tunnels in leaves
Rinse aphids away, remove mined leaves, conserve beneficial insects, and use insect netting before pests arrive.
Root diseaseDamping-off or crown rotSeedlings collapse or mature bases soften in wet soil
Improve drainage and airflow, thin crowded growth, water at the base, and avoid keeping cool soil saturated.
Two harvest paths
Cut fresh leaves or ripen coriander seed
Leaf harvest and seed harvest happen at opposite ends of the plant’s short life cycle.
- Leaves: Snip outer stems near the base while the center remains low and rounded.
- Flowers: Leave selected bolting plants undisturbed for pollinators and seed.
- Coriander: Cut mostly brown seed heads into paper bags, dry fully, then rub and winnow.
Urban Farmer’s current cilantro offerings
Choose leaf longevity or certified organic seed
All three offerings produce fresh cilantro leaves and mature coriander seed.
Questions herb gardeners ask
Cilantro growing FAQ
Quick answers for direct sowing, cool weather, bolting, containers, leaves, and coriander.
Are cilantro and coriander the same plant?
Yes. Cilantro usually means the fresh leaves and stems, while coriander refers to the mature dried fruits.
When should cilantro be planted?
Direct sow during cool spring or fall weather; plants bolt quickly as heat and long days increase.
How deep should cilantro seed be planted?
Sow the round fruits about 1/4–1/2 inch deep and keep the row evenly moist.
How long does cilantro take to germinate?
Seed commonly sprouts in about 7–14 days under cool to mild conditions.
How far apart should cilantro plants be?
Thin to about 6–8 inches for mature plants, or grow closer for baby-leaf harvest.
Can cilantro be transplanted?
Direct sowing is preferred because the taproot dislikes disturbance. If necessary, transplant very young seedlings carefully.
Can cilantro grow in a container?
Yes. Use a deep, well-drained pot and keep it cool and evenly moist.
Why is my cilantro bolting?
Heat, long days, drought, maturity, and root stress all encourage flowering.
Does Slow Bolt cilantro never flower?
No. It generally holds leaves longer, but every cilantro plant eventually flowers and sets seed.
When should cilantro leaves be harvested?
Begin around 30–45 days when rounded outer leaves are full-sized and before the center stretches.
How can I tell when coriander seed is ready?
Round fruits change from green to tan-brown, dry on the plant, and develop a warm aromatic scent.
Can cilantro flowers benefit the garden?
Yes. The small white umbels attract many beneficial and pollinating insects.
Ready to plant?
Grow cilantro leaves and coriander seed.
Choose Slow Bolt or organic seed for cool-season foliage followed by a fragrant spice harvest.