How To Grow And Harvest Cilantro Indoors

You can grow and harvest cilantro indoors fairly easily, even if you’ve never kept an herb plant alive before.
 
All you need is a sunny windowsill, a pot with drainage, and a little patience with the seeds.
 
Cilantro grows fast indoors, so you can start snipping leaves in just a few weeks.
 
In this post, I’ll walk you through how to grow and harvest cilantro indoors from start to finish, including the mistakes that trip most people up.
 
You’ll learn the best way to grow cilantro indoors, how to care for it, and how to harvest cilantro indoors so it keeps producing.
 
Let’s dig in.
 

How to Grow and Harvest Cilantro Indoors

 
Growing and harvesting cilantro indoors comes down to getting a few basics right from day one.
 
Cilantro is a cool-season herb, which makes it a natural fit for indoor growing since you control the temperature.
 
The trick is giving it enough light, the right soil, and the right size container.
 
Here’s how to set up your indoor cilantro garden properly.
 

1. Pick the Right Container and Soil

 
Cilantro has a long taproot, so it hates being cramped or transplanted.
 
Choose a pot that’s at least 8 to 12 inches deep with drainage holes at the bottom.
 
A 10-inch pot works well for one or two plants, and a wider container lets you sow more seeds at once.
 
Use a loose, well-draining potting mix rather than garden soil, since garden soil compacts indoors and suffocates roots.
 
You can also mix in a little perlite or vermiculite to improve drainage.
 

2. Sow the Seeds Correctly

 
Cilantro seeds are actually two seeds fused together, so gently crush them before planting to boost germination.
 
Plant the seeds about a quarter inch deep and space them an inch or two apart.
 
Keep the soil moist but not soaking wet, and expect sprouts in 7 to 10 days.
 
If you want a steady supply, sow a new batch every two to three weeks.
 
This succession planting is the secret to growing and harvesting cilantro indoors without gaps.
 

3. Give It Plenty of Light

 
Cilantro needs at least 4 to 6 hours of direct sunlight daily.
 
A south-facing window is ideal, but if your light is weak, use a grow light for 10 to 12 hours a day.
 
Without enough light, cilantro grows leggy and thin, with weak flavor.
 
Rotate your pot every few days so all sides get equal exposure.
 

4. Water and Feed Wisely

 
Keep the soil consistently moist but never soggy.
 
Water when the top inch of soil feels dry to the touch.
 
Indoor air can be dry, so cilantro may need more frequent watering than you’d expect.
 
Feed your plants with a diluted liquid fertilizer every two to three weeks.
 
Don’t overfeed, since too much nitrogen makes cilantro grow leaves fast but lose flavor.
 

How to Harvest Cilantro Indoors

 
Harvesting cilantro indoors is where a lot of people go wrong.
 
If you yank the whole plant, you get one meal and nothing else.
 
Instead, harvest selectively so the plant keeps growing.
 
Here’s how to harvest cilantro indoors the right way.
 

1. Start Harvesting When Plants Are 6 Inches Tall

 
Wait until your cilantro is at least 6 inches tall before you take anything.
 
At this size, the plant is established enough to handle trimming.
 
Snip the outer stems first, since new growth comes from the center.
 

2. Cut Stems, Don’t Pull Leaves

 
Use clean scissors to cut stems about an inch above the soil line.
 
Never pull individual leaves off, because that damages the growing tips.
 
Cutting the outer stems encourages bushier growth and you get more leaves over time.
 

3. Never Take More Than One-Third at Once

 
The golden rule for how to harvest cilantro indoors is to never remove more than a third of the plant.
 
Taking too much shocks the plant, slows growth, and can kill it.
 
Leave the rest to recover, then harvest again in a week or two.
 

4. Pinch Off Flower Buds

 
Cilantro bolts fast when it gets warm or stressed, sending up flower stalks.
 
Once it bolts, leaf production drops and the flavor turns bitter.
 
Pinch off any flower buds as soon as you see them to keep the plant in leaf mode longer.
 
And remember, if it does bolt, the seeds are coriander, so you can still harvest those.
 

Common Mistakes When You Grow and Harvest Cilantro Indoors

 
Even experienced gardeners make these mistakes when they grow and harvest cilantro indoors.
 
Avoid them and your plants will thrive.
 

1. Overcrowding the Pot

 
Cilantro needs airflow, so thin seedlings to 2 to 3 inches apart.
 
Crowded plants compete for nutrients and invite mold.
 

2. Letting the Soil Dry Out Completely

 
Cilantro hates drought, especially in small pots.
 
A quick droop means you waited too long to water.
 

3. Using Too Small a Container

 
Shallow pots stunt the taproot and limit growth.
 
Go deeper than you think you need.
 

4. Ignoring Temperature

 
Cilantro prefers 65 to 75°F.
 
Hot indoor spots cause bolting, so keep it away from radiators and heating vents.
 

So, Can You Grow and Harvest Cilantro Indoors?

 
You can grow and harvest cilantro indoors, and it’s one of the easiest herbs to keep going year-round.
 
All it takes is a deep pot, well-draining soil, plenty of light, and a little restraint when you snip.
 
Start a new batch every few weeks, harvest from the outside in, and pinch off flower buds to keep leaves coming.
 
Follow these steps on how to grow and harvest cilantro indoors and you’ll have fresh cilantro on your windowsill all season long.