How to Grow Cilantro from Seed

1Know When to Plant Cilantro Seeds

Plant cilantro seeds in early spring as soon as the soil can be worked and stays in that cool, comfortable range cilantro likes. In mild climates, you can also sow again in late summer for a strong fall crop.

The simplest way to get more cilantro is to stop treating it like a one-time planting. A fresh sowing every 2 to 3 weeks (known as succession planting) through cool weather keeps the harvest going much longer than one big patch planted all at once.

2How to Choose the Right Cilantro Type

Choose cilantro seed by how you want to use the crop. Some gardeners want steady leaf production, while others want a patch that can carry into flowering and seed.

One important note: all of the named cilantro varieties above can also be left to flower and set coriander seed. Coriander is a second use for the plant, not a separate cilantro type you need to shop for.

3How to Grow Cilantro from Seed Outdoors or Start It Indoors

Direct sowing is the standard method for cilantro. The plant makes a taproot early, and direct-sown plants usually settle faster and grow cleaner than transplants.

If you are still deciding what belongs in trays and what belongs in the garden, Park Seed's Best Seeds to Start Indoors or Direct Sow is a useful planning guide. Cilantro belongs on the direct-sow side of that line in most gardens.

4How to Plant Cilantro Seeds

Plant cilantro seeds about 1/4 inch deep in loose, well-drained soil and water gently so the seed zone stays evenly moist while the seeds swell and sprout. Cilantro seeds do not need light to germinate, so cover them lightly and keep the surface from drying hard.

Sow seeds a little thicker than your final spacing, then thin after the first true leaves appear. If you want bunching-style harvests, you can leave plants a little closer. If you want fuller individual plants, thin more aggressively and give each one room.

If your spring weather is dry or windy, a thin layer of straw or row cover can help hold moisture in the surface until seedlings are up.

5How to Care for Cilantro Seedlings

Cilantro seedlings need steady moisture, bright light, and breathing room. Once they emerge, the job is to keep them moving without letting the bed swing between soggy and dusty.

Thin crowded seedlings early, water at the root zone, and keep weeds from filling in around the row. Cilantro does not need heavy feeding. A modest amount of compost before sowing is usually enough for a fast spring crop.

6How to Thin or Transplant Cilantro Seedlings

Thin cilantro rather than transplanting it. Disturbing the root rarely improves the planting, and direct-sown seedlings usually outperform moved plants anyway.

For leaf production, thin to about 6 to 8 inches apart. If you want a younger, more frequent cut-and-come-again harvest, you can keep plants a bit closer and harvest more often.

7How to Keep Cilantro Growing Longer

Cool weather, steady moisture, and repeat sowing keep cilantro productive. Once the days heat up and the plant starts stretching, the harvest window shifts from leaf production to flowering and seed.

That is not a failure. It is just the next stage of the crop. Harvest leaves while the plants are compact, then let a few flower if you want coriander. In warmer regions, give late-spring sowings some afternoon shade to slow the rush to bloom.

8Cilantro Harvesting Tips

Start cutting outer leaves once plants are large enough to spare them, or pull whole plants if you want bunches. For the best kitchen quality, harvest before the stems elongate and the flavor turns sharper.

If you want coriander seed, let the flower heads dry on the plant until the seeds turn tan and aromatic. Cut the stems, finish drying them in a paper bag, and rub the seeds free once they are fully dry.

9Cilantro Plant Troubleshooting Tips

Most cilantro problems come back to heat, moisture swings, or crowding.

• Fast bolting usually means warm weather arrived before the planting matured.
• Poor germination usually means the surface dried out or crusted over.
• Yellow lower leaves often point to overly wet soil or exhausted older plants.
• Weak flavor usually shows up when plants are past their prime and already trying to flower.
• Dense patches invite more mildew and less airflow than cilantro ever needs.

FAQ: Growing Cilantro from Seed

Do Cilantro Seeds Need Light or Dark to Germinate?

Cilantro seeds germinate in the dark. Cover them lightly so the seed stays evenly moist while it sprouts.

Can I Grow Cilantro in Containers?

Yes. Use a container deep enough for the taproot, keep the mix evenly moist, and place the pot where it gets strong light without baking in afternoon heat.

Why Does Cilantro Bolt So Fast?

Cilantro naturally moves toward flowering as days warm and lengthen. Planting early and sowing again in intervals is the easiest fix.

Can I Harvest Cilantro and Coriander From the Same Planting?

Yes. Cut leaves from the earlier sowings, then let a few later plants flower and set seed for coriander.