How to Plant, Grow, and Care for Cilantro – Complete Guide

Cilantro is the herb that launched a thousand debates—people either can’t get enough of its bright, citrusy punch, or they swear it tastes like soap. If you’re in the love-it camp (and most gardeners are), there’s nothing quite like harvesting your own fresh cilantro for salsa, guacamole, curries, and garnishes.

But here’s the challenge: cilantro has a reputation for being fussy. It’s quick to bolt (flower and go to seed), struggles in summer heat, and can seem to go from perfect to pathetic overnight. The good news? Once you understand cilantro’s preferences and growth cycle, it becomes one of the easiest herbs to grow—especially if you employ the secret weapon of succession planting.

Whether you’re a salsa enthusiast, a curry connoisseur, or simply love the fresh taste of this polarizing herb, this guide will show you exactly how to grow cilantro successfully from your first spring planting through fall harvest.

Quick Reference: Cilantro Growing Guide

Attribute
Botanical Name
Sun Requirements
Height
Hardiness Zones
Soil Type
Water Needs
Days to Maturity
Spacing

Understanding Cilantro: An Overview

Cilantro (Coriandrum sativum) is an annual herb in the Apiaceae (carrot/parsley) family. Here’s where terminology gets interesting: in the United States, “cilantro” refers to the fresh leaves and stems, while “coriander” refers to the dried seeds. In many other parts of the world, the entire plant is called coriander, with “coriander leaves” or “fresh coriander” referring to what Americans call cilantro.

The plant has a fascinating growth cycle. It’s naturally programmed to complete its life cycle quickly—germinating, growing, flowering, and setting seed within a matter of weeks when conditions are warm. This rapid life cycle is an adaptation to its native Mediterranean and Middle Eastern habitat, where summer heat and drought would kill slow-growing plants.

The “Soap Gene”

That polarizing flavor divide? It’s genetic. Some people possess a gene variant (OR6A2) that makes them sensitive to aldehydes in cilantro, causing it to taste soapy or bug-like. If you’re one of these people (about 4-14% of the population), no amount of fresh garden harvest will change your perception—but the rest of us will happily eat your share.

Cilantro vs. Culantro

Don’t confuse cilantro with culantro (Eryngium foetidum), a completely different plant with similar flavor but large, serrated leaves. Culantro is popular in Caribbean and Latin American cooking and thrives in hotter conditions than cilantro.

How to Start Cilantro from Seed

Direct Sowing (Recommended)

Cilantro has a delicate taproot that doesn’t transplant well, making direct sowing the preferred method:

Timing: Sow cilantro seeds 2-4 weeks before your last spring frost date, and continue sowing every 2-3 weeks through late summer for a continuous harvest. Soil preparation: Work compost into the top 6 inches of soil. Cilantro appreciates fertile, well-draining soil. Planting the seeds: 1. Soak seeds in water for 24 hours before planting to speed germination 2. Sow seeds 1/4 inch deep 3. Space seeds 1-2 inches apart in rows 12 inches apart 4. Cover lightly with soil and water gently Germination: Cilantro seeds germinate in 7-14 days at soil temperatures of 55-68°F (13-20°C). Seeds won’t germinate well in soil temperatures above 75°F (24°C). Thinning: When seedlings are 2-3 inches tall, thin to 6-8 inches apart. Use thinnings in salads—they’re delicious!

Starting Indoors (If You Must)

If you must start indoors, use biodegradable pots that can be planted directly to minimize root disturbance:

1. Sow 2-3 seeds per pot, 1/4 inch deep 2. Keep soil at 60-70°F 3. Germination takes 7-14 days 4. Thin to one plant per pot 5. Plant the entire biodegradable pot outdoors when seedlings are 2-3 inches tall

Planting Cilantro in the Garden

When to Plant

Spring: Plant 2-4 weeks before the last frost. Cilantro tolerates light frosts and actually prefers cool weather. Fall: In hot climates, fall planting often yields the best results. Sow seeds 8-10 weeks before your first fall frost. Summer: You can grow cilantro in summer, but it requires afternoon shade and extra attention to moisture. Alternatively, let some spring plants bolt and harvest the coriander seeds.

Site Selection

• Cool climates: Full sun produces the most robust growth
• Hot climates: Morning sun with afternoon shade prevents premature bolting
• Soil: Rich, well-draining soil with a pH of 6.0-7.5
• Protection: A location shielded from strong winds prevents damage to the delicate foliage

Succession Planting Strategy

This is the key to cilantro success:

1. Sow small batches every 2-3 weeks throughout the growing season 2. Plant in multiple locations with varying sun exposure—some in full sun for early spring/fall, some in partial shade for summer 3. Stagger your harvest by planting varieties with different maturity dates 4. Allow some plants to bolt for coriander seed harvest

This approach ensures you always have fresh cilantro at the perfect stage, even as individual plants complete their life cycles.

Growing Cilantro in Containers

Cilantro is excellent for container growing and may actually perform better in pots because you can move plants to shadier locations as temperatures rise:

Container guidelines:

• Use pots at least 8-10 inches deep (cilantro develops a taproot)
• Ensure good drainage
• Use quality potting mix enriched with compost
• Choose wide, shallow containers over deep pots—you’re growing for leaf production, not root depth

Essential Cilantro Care Tips

Sunlight Requirements

Cilantro’s sun needs change with the seasons:

• Spring and fall: Full sun (6+ hours) produces the fullest, most flavorful plants
• Summer: Partial shade, especially afternoon shade, helps delay bolting
• Hot climates: Dappled shade or 3-4 hours of morning sun may be optimal year-round

Watch your plants and adjust accordingly. If leaves start yellowing or plants look stressed, they may need more shade.

Watering Your Cilantro

Consistent moisture is crucial for tender, flavorful leaves:

• Frequency: Water when the top inch of soil feels dry
• Method: Water at the base of plants to keep foliage dry
• Container plants: Check daily in warm weather—they dry out quickly
• Mulch: Apply 1-2 inches of organic mulch to retain moisture and keep roots cool

Signs of underwatering: Wilting, yellowing lower leaves, bitter-tasting foliage, premature bolting Signs of overwatering: Yellowing leaves, root rot, fungal issues

Soil and Fertilizer Needs

Cilantro appreciates rich soil but isn’t a heavy feeder:

• At planting: Mix 2-3 inches of compost into the soil
• Mid-season: If growth seems slow, side-dress with compost or apply a balanced organic fertilizer
• Avoid over-fertilizing: Too much nitrogen produces lush growth with diluted flavor

Temperature Considerations

Understanding temperature effects is key to cilantro success:

• Optimal growing: 50-75°F (10-24°C)
• Germination: 55-68°F (13-20°C) is ideal; above 75°F reduces germination
• Bolting trigger: Temperatures above 75°F consistently will trigger flowering
• Light frosts: Cilantro tolerates light frosts (down to about 25°F / -4°C)

When hot weather arrives, even with perfect care, cilantro will eventually bolt. This is natural—embrace it and harvest the coriander seeds!

Preventing and Managing Bolting

Why Cilantro Bolts

Bolting is cilantro’s natural response to stress—particularly heat, long days, and root disturbance. Once a cilantro plant begins flowering, leaf production stops and existing leaves become smaller and more bitter.

Delaying Bolting

While you can’t prevent bolting indefinitely, you can delay it:

1. Choose slow-bolt varieties: Look for varieties labeled “slow-bolt,” “long-standing,” or “Leisure”

2. Provide afternoon shade: Shield plants from the hottest part of the day

3. Keep soil cool: Mulch heavily and water consistently to keep roots cool

4. Harvest frequently: Regular harvesting keeps plants in vegetative growth mode longer

5. Plant at the right time: Focus on spring and fall plantings when temperatures are optimal

6. Avoid root disturbance: Don’t transplant or cultivate around established plants

Succession Planting: The Real Solution

The most effective strategy isn’t preventing bolting—it’s planning for it. By succession planting every 2-3 weeks, you ensure a continuous supply of fresh, pre-bolt cilantro throughout the growing season.

Harvesting and Storing Cilantro

When to Harvest

Begin harvesting cilantro when plants reach 4-6 inches tall, usually 3-4 weeks after germination. The flavor is best before flowering begins.

How to Harvest

• Light harvests: Snip individual outer leaves as needed, leaving the central growing point intact
• Heavy harvests: Cut entire plants to 1-2 inches above the soil line—they may regrow for a second harvest
• Best time: Harvest in the morning after dew has dried but before the heat of the day
• Final harvest: Cut plants before flowers fully open for the last usable leaves

Storing Fresh Cilantro

Cilantro is notoriously difficult to store, but these methods work well:

The bouquet method: Place stems in a glass of water, cover loosely with a plastic bag, and refrigerate. Change water every 2-3 days. Lasts up to 2 weeks. Damp paper towel method: Wrap unwashed cilantro in damp paper towels, place in a plastic bag, and refrigerate. Lasts 7-10 days. Freezing: Chop leaves and freeze in ice cube trays covered with water or oil. Or freeze whole sprigs in freezer bags. Frozen cilantro is best for cooked dishes, not garnishes. Drying: Not recommended—dried cilantro loses most of its distinctive flavor. If you must dry it, use a dehydrator at low temperature and store in airtight containers.

Harvesting Coriander Seeds

If you let some plants flower and go to seed, you’ll harvest coriander:

1. Let flowers mature: Seed heads form after flowers fade 2. Watch for browning: Harvest when most seeds have turned brown but before they scatter 3. Cut seed heads: Place paper bags over seed heads and cut stems, or cut entire plants and hang upside down over a sheet 4. Thresh and winnow: Rub seed heads to release seeds, then winnow to remove chaff 5. Store: Keep coriander seeds in airtight containers in a cool, dark place

Coriander seeds are delicious in pickles, curries, baked goods, and homemade spice blends.

Common Cilantro Pests and Diseases

Pest Problems

Aphids: Small sap-sucking insects that cluster on new growth. Blast off with water or treat with insecticidal soap. Whiteflies: Tiny white flying insects on leaf undersides. Use yellow sticky traps and neem oil. Spider Mites: Cause stippling and webbing, especially in hot, dry conditions. Increase humidity and spray plants with water. Leafminers: Create winding trails in leaves. Remove affected leaves and use row covers for prevention. Fungus Gnats: A sign of overly wet soil. Allow soil to dry between waterings.

Disease Issues

Powdery Mildew: White, powdery coating on leaves in humid conditions. Improve air circulation and avoid overhead watering. Leaf Spot: Brown or black spots on foliage. Remove affected leaves and avoid wetting foliage. Damping Off: Seedlings collapse at the soil line. Ensure good drainage and don’t overwater. Root Rot: Caused by poor drainage and overwatering. Plant in well-draining soil and water appropriately.

Companion Planting with Cilantro

Cilantro benefits many garden plants:

• Tomatoes: Cilantro attracts beneficial insects that prey on tomato pests
• Spinach and lettuce: Similar growing conditions and shade tolerance
• Peas: Compatible growth habits and timing
• Chervil and dill: Similar cultural requirements

Avoid planting cilantro near fennel, which can inhibit growth.

Troubleshooting Common Cilantro Problems

Problem	Cause	Solution
Rapid bolting	Heat stress, long days	Plant in cooler weather; provide shade; succession plant
Yellow leaves	Overwatering, nitrogen deficiency	Improve drainage; side-dress with compost
Leggy, weak growth	Insufficient light	Move to sunnier location
Bitter leaves	Bolting, heat stress, underwatering	Harvest earlier; provide consistent moisture
Poor germination	Soil too warm, old seeds	Plant when soil is cooler; use fresh seeds
Holes in leaves	Caterpillars, slugs, leafminers	Identify pest; use appropriate organic control

Frequently Asked Questions About Growing Cilantro

Why does my cilantro keep dying?

Cilantro is a cool-season annual that naturally completes its life cycle quickly. What looks like “dying” is often just bolting—flowering and going to seed. This is normal! The solution is succession planting every 2-3 weeks to ensure continuous harvests.

Can I grow cilantro indoors?

Yes, but it can be challenging. Provide bright light (south-facing window or grow lights), cool temperatures (under 75°F), and consistent moisture. Indoor cilantro often bolts quickly due to temperature fluctuations and light stress. See our basil growing guide for indoor herb growing tips that apply to cilantro as well.

What’s the difference between cilantro and coriander?

They’re the same plant! “Cilantro” refers to the fresh leaves and stems, while “coriander” refers to the dried seeds. In the UK and other countries, the entire plant is often called coriander, with “fresh coriander” referring to the leaves.

Can I save seeds from my cilantro for next year?

Absolutely! Let some plants flower and go to seed. Harvest the seeds (coriander) when brown, dry thoroughly, and store in a cool, dry place. Cilantro seeds remain viable for 3-5 years.

Why does cilantro taste like soap to some people?

It’s genetic! Some people have a gene variant that makes them sensitive to certain aldehydes in cilantro, causing it to taste soapy. This affects 4-14% of the population and can’t be changed by growing methods.

How do I grow cilantro in hot climates?

Focus on fall, winter, and early spring plantings. Provide afternoon shade, mulch heavily to keep soil cool, and water consistently. Choose slow-bolt varieties. Our mint growing guide has additional tips for managing herbs in challenging conditions.

Can I regrow cilantro from kitchen scraps?

Unlike green onions or lettuce, cilantro doesn’t regrow well from cuttings because it’s a single-stem plant with a taproot. However, if your store-bought cilantro still has roots attached, you might get some additional growth by planting it.

Is cilantro a perennial?

No, cilantro is a true annual that completes its life cycle in one growing season. It won’t return year after year like rosemary or mint. However, it readily self-seeds in the garden, so you may find “volunteer” plants appearing where seeds fell the previous year.

Cilantro may have a reputation for being finicky, but it’s really just a misunderstood cool-season crop. Embrace its natural life cycle, employ succession planting, and focus on spring and fall harvests for the best results. With these strategies, you’ll have fresh cilantro whenever you need it—and a steady supply of coriander seeds for your spice cabinet.

Related Articles:

• How to Grow Basil
• How to Grow Mint
• Succession Planting Guide
• Cool Season Crops for Spring and Fall

Happy gardening!]]>