How To Grow Indoor Cilantro

Growing indoor cilantro is absolutely possible, and it’s one of the most rewarding herbs you can keep on a sunny windowsill.
 
If you’ve been wondering how to grow indoor cilantro without it bolting or turning yellow, you’re in the right place.
 
Cilantro (also known as coriander) grows quickly indoors when you give it the right light, water, and soil.
 
In this post, we’ll walk through exactly how to grow indoor cilantro from seed or transplant, plus tips to keep it producing for weeks.
 
Let’s dig in.
 

How to Grow Indoor Cilantro Successfully

Learning how to grow indoor cilantro starts with understanding what this herb craves.
 
Cilantro is a cool-season herb that loves bright light and consistent moisture.
 
Indoors, you’re basically recreating a mild spring day, and that’s the secret to how to grow indoor cilantro that thrives instead of struggles.
 
Here are the key factors that make it work.
 

1. Choose the Right Container and Soil

To grow indoor cilantro, start with a pot at least 8 to 10 inches deep.
 
Cilantro has a long taproot, so shallow containers will stunt its growth fast.
 
Make sure your pot has drainage holes to prevent soggy roots.
 
Use a light, well-draining potting mix, ideally one designed for herbs.
 
You can also mix in a little perlite to improve airflow around the roots.
 
If you want to grow indoor cilantro in a rectangular planter, that works great too, just space seeds about 2 inches apart.
 

2. Give It Plenty of Bright Light

How to grow indoor cilantro without enough light is a losing battle.
 
This herb needs at least 5 to 6 hours of direct sunlight daily.
 
A south-facing windowsill is ideal.
 
If your home doesn’t get strong natural light, use a grow light.
 
Keep the light about 6 inches above the plants and run it for 12 to 14 hours a day.
 
Without enough light, cilantro becomes leggy, weak, and flavorless.
 
So if you’re serious about how to grow indoor cilantro, invest in a simple LED grow light.
 

3. Water Consistently but Not Too Much

Cilantro hates drying out, but it also hates sitting in water.
 
Check the soil every day or two by sticking your finger about an inch deep.
 
When it feels dry, water thoroughly until it drains out the bottom.
 
Don’t let the pot sit in a saucer of standing water.
 
Overwatering is the fastest way to kill indoor cilantro.
 
Yellow leaves usually mean too much water, while crispy brown edges mean too little.
 

4. Keep Temperatures Cool

Cilantro grows best between 60°F and 70°F.
 
Hot indoor air from heaters or south-facing windows in summer can cause bolting.
 
Bolting means the plant shoots up a flower stalk and stops producing leaves.
 
Once cilantro bolts, the leaves turn bitter and the plant is basically done.
 
So keep your indoor cilantro away from heat vents and radiators.
 
If your home runs warm, choose a slower-bolting variety like ‘Slowbolt’ or ‘Calypso.’
 

5. Fertilize Lightly

Cilantro doesn’t need heavy feeding.
 
Too much fertilizer actually makes it bolt faster.
 
Feed your indoor cilantro with a diluted liquid herb fertilizer every 3 to 4 weeks.
 
That’s plenty to keep it healthy without pushing it into flowering mode.
 

How to Grow Indoor Cilantro from Seed vs. Transplant

You can grow indoor cilantro either way, but seeds give you more control.
 

Starting from Seed

Sow seeds about ¼ inch deep in moist potting mix.
 
Keep the soil warm and damp, and seedlings will appear in 7 to 10 days.
 
Cilantro seeds are actually the whole coriander spice, so you can even plant seeds from your spice rack if they’re unroasted.
 
For a continuous harvest, sow a new batch every 3 weeks.
 

Using Transplants

If you buy a cilantro transplant, gently loosen the roots before planting.
 
Set it at the same depth it was growing in its original pot.
 
Transplants establish quickly, but they tend to bolt sooner than seed-grown plants.
 
So if you want long-term production, starting from seed is the better route for how to grow indoor cilantro.
 

Harvesting and Keeping Your Indoor Cilantro Productive

The whole point of how to grow indoor cilantro is to actually eat it.
 
Harvest outer leaves first, cutting them near the base of the stem.
 
Never take more than one-third of the plant at a time.
 
This keeps it growing and prevents stress.
 
Pinch off any flower buds the moment you see them.
 
That single habit extends your harvest by weeks.
 
If your cilantro does bolt, don’t toss it.
 
The flowers attract beneficial insects, and the seeds (coriander) can be dried and used in cooking.
 

So, How to Grow Indoor Cilantro?

Growing indoor cilantro comes down to giving it bright light, cool temperatures, consistent moisture, and well-draining soil.
 
Start with the right container, water carefully, and harvest often.
 
Avoid heat and overfeeding, and your cilantro will keep producing fresh leaves right on your windowsill.
 
Now that you know how to grow indoor cilantro, grab a pot, some seeds, and get planting.