Cilantro grows best when you sow seeds directly in cool spring soil and keep harvesting the outer leaves. If you have ever wondered how to grow cilantro successfully at home, you are in the right place. This herb is easy to start, but it does have a few quirks that can trip up new gardeners. Let me walk you through everything you need to know.
Cilantro is a fast-growing annual herb that loves cool weather. It bolts quickly when temperatures rise, so timing matters a lot. You can grow it in garden beds, containers, or even windowsill pots. The key is giving it the right conditions from the start.
Why Grow Cilantro At Home
Fresh cilantro from the store often wilts within a day or two. Homegrown cilantro stays crisp and flavorful much longer. You can pick exactly what you need for a recipe without wasting any. Plus, the taste is brighter and more intense than store-bought bunches.
Another reason to grow your own is the cost savings. A single seed packet costs less than one bunch at the supermarket. That packet can produce dozens of plants over a season. You also avoid pesticides and plastic packaging.
Cilantro is also a great companion plant in the garden. Its strong scent repels some pests like aphids and spider mites. The flowers attract beneficial insects like ladybugs and lacewings. So it helps your whole garden stay healthier.
How To Grow Cilantro
Now lets get into the details of how to grow cilantro from seed to harvest. Follow these steps and you will have a steady supply of fresh leaves all spring and fall.
Choose The Right Time To Plant
Cilantro is a cool-season crop. It grows best when daytime temperatures are between 50 and 85 degrees Fahrenheit. Plant seeds in early spring as soon as the soil can be worked. In most zones, that means 2 to 4 weeks before the last frost date.
For a fall crop, plant seeds in late summer when temperatures start to cool down. Cilantro will grow well into autumn and even survive light frosts. In mild winter areas, you can grow it all winter long.
Avoid planting cilantro in the heat of summer. It will bolt, or go to seed, very quickly. Bolting makes the leaves turn bitter and the plant stops producing new growth.
Select A Good Location
Cilantro needs full sun in cool weather. In warmer climates, give it some afternoon shade to delay bolting. The soil should be well-draining and rich in organic matter. A pH between 6.2 and 6.8 is ideal.
If you are growing in containers, choose a pot at least 8 inches deep. Cilantro has a taproot that needs room to grow. Make sure the pot has drainage holes to prevent waterlogged soil.
Raised beds work well too. They warm up faster in spring and drain better than ground soil. Mix in some compost before planting to give the seeds a nutrient boost.
Prepare The Soil
Loosen the soil to a depth of about 6 to 8 inches. Remove any rocks, weeds, or debris. Mix in a 2-inch layer of compost or well-rotted manure. This improves drainage and provides slow-release nutrients.
If your soil is heavy clay, add some sand or perlite to lighten it. Cilantro roots can rot in soggy soil. A light, fluffy texture is what you are aiming for.
Rake the soil smooth before planting. Seeds are small and need good contact with the soil to germinate. A fine seedbed helps them establish quickly.
Sow Seeds Directly
Cilantro does not transplant well because of its taproot. Always sow seeds directly where you want them to grow. Plant seeds about 1/4 inch deep and 1 to 2 inches apart. Cover lightly with soil and water gently.
Space rows about 6 to 8 inches apart if you are planting in a garden bed. For containers, scatter seeds evenly over the surface and cover with a thin layer of soil.
Seeds germinate in 7 to 14 days depending on soil temperature. Keep the soil moist but not soggy during this time. A light mulch of straw or compost can help retain moisture.
Thin Seedlings
Once seedlings have two sets of true leaves, thin them to 4 to 6 inches apart. This gives each plant enough room to develop a full rosette of leaves. Crowded plants produce smaller leaves and bolt faster.
You can eat the thinned seedlings. They are tender and flavorful. Just rinse them off and add to salads or sandwiches.
If you want a continuous harvest, sow new seeds every 2 to 3 weeks. This is called succession planting. It ensures you always have young plants ready to pick.
Water Consistently
Cilantro needs about 1 inch of water per week. Water deeply and less frequently to encourage deep root growth. Shallow watering leads to weak plants that bolt quickly.
Check the soil moisture by sticking your finger an inch into the soil. If it feels dry, it is time to water. In hot weather, you may need to water every other day.
Avoid getting water on the leaves if possible. Wet foliage can lead to fungal diseases. Water at the base of the plants instead.
Fertilize Lightly
Cilantro does not need heavy feeding. Too much nitrogen makes the leaves grow fast but lose flavor. A balanced fertilizer applied once at planting time is usually enough.
If your soil is poor, side-dress with compost halfway through the growing season. You can also use a diluted liquid fertilizer every 3 to 4 weeks. Stop fertilizing once the plant starts to flower.
Over-fertilized cilantro often has a milder taste. For the best flavor, let the plants grow at a natural pace with minimal extra nutrients.
Harvest Regularly
Start harvesting when the plants are 6 to 8 inches tall. Pick the outer leaves first, leaving the inner ones to keep growing. This method gives you a longer harvest period.
Use sharp scissors or garden shears to cut leaves at the base. Do not pull or tear the leaves, as this can damage the plant. Harvest in the morning when the leaves are crisp and full of flavor.
If you see flower stalks forming, pinch them off right away. This delays bolting and encourages more leaf growth. Once the plant flowers, the leaves turn bitter and the plant stops producing.
Deal With Bolting
Bolting is when cilantro sends up a tall flower stalk. It happens naturally in response to heat or long days. While you cannot stop it completely, you can slow it down.
Keep the soil cool with mulch. Provide afternoon shade in hot weather. Harvest frequently to reduce stress on the plant. And always remove flower buds as soon as they appear.
Once the plant bolts, let it go to seed. The flowers attract pollinators, and the seeds are coriander. You can collect the seeds for cooking or replanting.
Save Seeds For Next Season
Let a few cilantro plants flower and go to seed. The seeds will turn brown and dry on the plant. Cut the seed heads and place them in a paper bag. Shake the bag to release the seeds.
Store seeds in a cool, dry place in an airtight container. They remain viable for about 2 to 3 years. Label the container with the date so you know when to use them.
You can also let the seeds fall naturally and self-sow. Cilantro often reseeds itself in the garden. Next spring, new plants will appear without any effort from you.
Common Problems And Solutions
Even with good care, cilantro can run into issues. Here are the most common problems and how to fix them.
Leaves Turning Yellow
Yellow leaves usually mean overwatering or poor drainage. Check the soil moisture and reduce watering if needed. Make sure your container has drainage holes. If the soil is heavy, add sand or perlite.
Yellow leaves can also be a sign of nutrient deficiency. A light application of balanced fertilizer can help. But do not overdo it, as too much fertilizer can also cause yellowing.
If only the lower leaves are yellow, that is normal aging. Just remove them and let the plant focus on new growth.
Bolting Too Quickly
If your cilantro bolts before you get a good harvest, the weather is too warm. Plant earlier in spring or later in fall. Provide shade during the hottest part of the day.
Choose slow-bolt varieties like ‘Calypso’ or ‘Santo’. These are bred to resist bolting longer. They can give you several extra weeks of harvest.
Keep the soil consistently moist. Stress from dry soil can trigger bolting. Mulch helps maintain even moisture levels.
Pests
Aphids and spider mites sometimes attack cilantro. A strong blast of water from a hose can knock them off. Insecticidal soap works well for heavier infestations.
Slugs and snails may eat young seedlings. Use beer traps or diatomaceous earth around the plants. Handpick them at night when they are most active.
Companion planting helps deter pests. Plant cilantro near tomatoes, peppers, or beans. The strong scent confuses many common garden pests.
Diseases
Powdery mildew can appear in humid conditions. Space plants for good air circulation. Avoid overhead watering. Remove affected leaves promptly.
Root rot happens in waterlogged soil. Improve drainage and do not overwater. If a plant is affected, remove it and let the soil dry out.
Fungal leaf spots are usually not serious. Remove infected leaves and avoid wetting the foliage. Most plants outgrow minor fungal issues.
Growing Cilantro In Containers
Container growing is perfect for small spaces. You can keep pots on a balcony, patio, or windowsill. Just follow these tips for success.
Choose a pot at least 8 inches deep with drainage holes. Fill it with a high-quality potting mix. Do not use garden soil, as it compacts in containers.
Place the pot where it gets 4 to 6 hours of sun per day. In hot climates, morning sun with afternoon shade works best. Rotate the pot every few days for even growth.
Water container-grown cilantro more often than garden plants. Pots dry out faster, especially in warm weather. Check the soil daily and water when the top inch feels dry.
Fertilize every 2 to 3 weeks with a diluted liquid fertilizer. Container plants need more nutrients because they are in a limited soil volume. Use a balanced formula like 10-10-10.
Harvest the same way as garden plants. Pick outer leaves regularly to encourage bushy growth. With good care, a single pot can provide leaves for weeks.
Frequently Asked Questions
Can I grow cilantro indoors year-round?
Yes, you can grow cilantro indoors under grow lights. Use a pot with drainage and a quality potting mix. Provide 12 to 14 hours of light per day. Keep the temperature cool, around 65 to 70 degrees Fahrenheit. Harvest regularly to keep the plant producing.
Why does my cilantro taste soapy?
Some people have a genetic trait that makes cilantro taste like soap. This is not a problem with the plant itself. If you do not have that trait, soapy taste can come from over-fertilizing or bolting. Harvest young leaves and avoid heavy feeding.
How long does cilantro take to grow from seed?
Cilantro takes about 3 to 4 weeks from seed to first harvest. Full-sized plants ready for heavy harvesting take 6 to 8 weeks. Succession planting ensures you always have plants at different stages.
Can I regrow cilantro from cuttings?
Cilantro does not regrow well from stem cuttings like basil or mint. The taproot is essential for regrowth. It is much easier to start from seed. However, you can root the stems in water for a few days, but they rarely grow into full plants.
What is the difference between cilantro and coriander?
Cilantro refers to the fresh leaves and stems of the plant. Coriander is the dried seeds. Both come from the same plant, Coriandrum sativum. In some countries, the whole plant is called coriander, but in the US, cilantro is the fresh herb.
Tips For The Best Harvest
Harvest in the morning when the leaves are crisp. Use sharp scissors to avoid crushing the stems. Do not take more than one-third of the plant at a time. This keeps the plant healthy and productive.
Store fresh cilantro in a glass of water in the refrigerator. Cover the leaves with a plastic bag. Change the water every few days. It will stay fresh for up to a week.
You can also freeze cilantro for later use. Chop the leaves and place them in ice cube trays with water or oil. Once frozen, pop the cubes out and store in a freezer bag. Use them in soups, stews, and sauces.
Drying cilantro is not recommended. The leaves lose most of their flavor when dried. Freezing or using fresh is always better for taste.
Let a few plants go to seed for coriander. The seeds add a warm, citrusy flavor to curries, pickles, and baked goods. Toast them lightly before grinding for the best aroma.
Cilantro is one of the easiest herbs to grow. With a little planning and care, you can enjoy fresh leaves from spring through fall. Start your seeds today and see how rewarding homegrown cilantro can be.