How to Grow Mint Indoors: An Easy Year-Round Guide

When you grow mint indoors, you can enjoy this versatile herb year-round, no matter the weather.

It’s an easy-care plant that’s perfect for the windowsill or the small-space grower.

This blog walks you through every step, from choosing a variety and a pot to planting, watering, pruning, harvesting, and handling the usual hiccups.

You will enjoy fresh mint all year long!

What You Need to Start

Before you get your hands dirty, it helps to have everything ready in one place. A little prep now means fewer interruptions once you start planting.

Item	Why You Need It
Pot with drainage holes	Prevents water from pooling around roots. 6 to 8 inches wide works well for a single plant (go up to 10 or 12 inches for a bigger harvest). Plastic or glazed pots hold moisture longer than unglazed terracotta.
Well-draining potting mix	Keeps roots aerated. Blend with perlite or coarse sand for best results.
Mint cutting, division, nursery plant, or seeds	Your starting point. Cuttings, divisions, and nursery plants grow much faster than seeds.
Watering can	Helps you control moisture and avoid overwatering.
Balanced liquid fertilizer	Feeds the plant occasionally to support steady growth.
Pruning shears or scissors	Keeps the plant bushy and prevents it from getting leggy.
Grow light (optional)	Fills in when your windows don’t get 4 to 6 hours of direct sun.

Next is potting itself, then how to start your mint from a cutting, division, nursery plant, or seeds.

Step-by-Step Process: How to Plant Mint Indoors?

Potting mint takes about ten minutes. Here’s how to get it settled in:

• Fill the pot with moist potting mix blended with perlite, leaving about half an inch of space below the rim so water doesn’t run straight off the top.

• Make a hole slightly larger than the root ball (or the roots of your rooted cutting).

• Set the plant in at the same depth it was growing before, then gently firm the mix around it.

• Water slowly until it drains out the bottom, then empty the saucer.

• Move the pot to its sunny spot and leave it be while it settles in.

Quick Tip: Hold off on fertilizer for about three weeks after potting so the new roots aren’t pushed too hard.

Stages of Growing Mint Indoors

Growing mint indoors happens in stages, and knowing what to expect at each point helps you care for the plant correctly as it develops.

Here is how the process usually unfolds from start to finish.

Stage 1: Starting Your Mint (Cuttings, Divisions, Nursery Plants, or Seeds)

Cuttings are the fastest route. Snip a 4- to 6-inch stem, strip the lower leaves, and set it in a glass of water. Roots usually show up within a week or two, and you can pot it once they are a couple of inches long.

Fresh mint twigs from the grocery store often root this way, too.

Dig up a clump with roots attached, rinse the soil off the roots to avoid bringing pests indoors, and pot it in fresh mix.

Nursery plants skip this step entirely and arrive with an established root system, ready for immediate transplanting.

Many nurseries only stock herbs in spring, so pick one up then if you can. Seeds take the longest. Sow them on the surface of moist mix (they need light to germinate), keep them at 65 to 70°F, and expect sprouts in about 10 to 15 days.

From there, it takes about two to three months to reach harvest size.

One catch with seeds: True peppermint and chocolate mint are sterile hybrids, so peppermint seed packets usually grow a spearmint type instead. Seed-grown mint may vary in flavor, so choose cuttings or a nursery plant.

Stage 2: Early Growth and Establishment

Once planted, mint spends its first two to three weeks adjusting to its new pot and indoor conditions, so it may not show much visible growth.

Consistent soil moisture matters most here, since drying out during establishment can stress young roots before they have spread properly. Avoid moving the pot often or exposing it to sudden temperature shifts.

New leaf growth during this window is the clearest sign the plant has rooted in and is ready for regular care.

Stage 3: Feeding and Fertilizing

Mint does not need frequent feeding to thrive, and overdoing it can actually work against you.

A balanced liquid fertilizer diluted to half strength, applied every four to six weeks when you water, supplies enough nutrients for steady leaf production. Stretch it toward the six-week end in winter.

Feeding more often tends to push fast, soft growth with less flavor.

If you’ve overdone it, run plain water through the pot for a few minutes to flush out the extra salts.

Stage 4: Pruning for Bushier Growth

Pruning shapes how full and productive an indoor mint plant becomes over time.

Once stems reach about 4 inches, pinch or snip just above a leaf node (the spot where a pair of leaves meets the stem).

That signals the plant to branch out from that point instead of growing tall and thin.

Repeat this every couple of weeks, even between harvests. It prevents the leggy, sparse look mint gets when left alone and gives you a noticeably denser plant within just a few rounds.

Stage 5: Harvesting Mint Leaves

Morning is the best time to harvest, once any dew has dried.

The leaves are at their freshest and most aromatic before the day’s heat sets in. Snipping individual leaves works for small amounts, while cutting whole stems just above a leaf pair encourages fuller regrowth from that point.

Take no more than a third of the plant at once so it can recover quickly.

This light, regular harvesting actually stimulates more growth rather than setting the plant back!

Stage 6: Repotting and Dividing as It Grows

Indoor mint grows quickly enough to outgrow its container within a year, and a few signs make this easy to spot.

Roots circling at the bottom of the pot, water draining unusually fast, or growth slowing despite good care all point to the same fix. Divide the root ball into smaller sections and repot them in fresh, well-draining mix.

Each piece gets room to expand again, and you get extra plants to grow elsewhere or share.

What Makes Mint Perfect for Growing Indoors?

Mint is one of the easiest herbs to keep going indoors.

Once it settles in, it grows fast and gives you a steady supply of fresh leaves for tea, cooking, or garnishing drinks.

Keeping it indoors also solves a problem many gardeners run into outside. Mint spreads through underground stems called rhizomes (plus runners along the surface), and it can quickly take over a garden bed, crowding out other plants.

Using a pot helps control the runners, so your mint stays where you want it and doesn’t take over your garden.

Mint’s roots stay close to the soil surface, too, so it’s naturally happy in a container.

It’s also forgiving for indoor gardening beginners, in the same league as other beginner-proof houseplants that tolerate a missed watering without much fuss.

If you’re looking for a low-pressure way to start growing something indoors, mint is a solid pick!

Choosing the Right Mint Variety

Mint comes in many varieties, each with its own flavor and growth habit. The right pick depends on how you plan to use the leaves. Here are some of the best varieties for indoor growing:

• Spearmint (Mentha spicata): Sweet and mild, great for teas, desserts, and sauces. It’s the mint you’ll find most often at nurseries, and the one most worth trying from seed.

• Peppermint (Mentha × piperita): Bold, cooling flavor that’s lovely in hot chocolate, desserts, and tea. A vigorous grower. Start it from a plant or cutting, since true peppermint doesn’t produce viable seed.

• Chocolate Mint (Mentha × piperita ‘Chocolate’): A peppermint cultivar with a hint of cocoa and pretty dark stems. It spreads just as eagerly as peppermint and also needs to start from a plant or cutting.

• Mojito Mint (Mentha × villosa): Milder and warmer than spearmint, with less of a sharp bite. It’s the traditional choice for Cuban mojitos and grows fast.

• Apple Mint (Mentha suaveolens): Fuzzy leaves with a fruity, minty flavor that works well in iced tea and salads.

• Pineapple Mint (Mentha suaveolens’ Variegata’): Cream-edged leaves that make it one of the prettiest mints to keep on a sill.

Consider your favorite flavors and the space you have when you choose. Some grow more aggressively than others, but all of them adapt well to container life. Just give each variety its own pot!

Can You Grow Mint in Water?

Yes! Mint is one of the few herbs that will happily grow in a glass of water for a while, no soil (and no fungus gnats) required.

Take a few 4- to 6-inch cuttings, strip off any leaves that would sit below the waterline, and stand them in a glass or jar on a bright windowsill. Change the water and rinse the glass every five to seven days to keep it fresh.

The downside is that mint doesn’t live forever in water.

After a few weeks or months, the leaves start to yellow and growth stalls. For a plant that lasts for years, move your rooted cuttings into a pot of soil once the roots are a couple of inches long.

Hydroponic kits are another soil-free option if you want to grow a lot of mint, though they cost more to run. If you prefer a budget route, see how to make a hydroponic tower for home gardens.

Ideal Growing Conditions for Indoor Mint

Mint isn’t too picky, but a few basics can make the difference between a struggling plant and one that fills out fast.

Light Requirements

• Daily Exposure: Needs four to six hours of direct sunlight

• Best Windows: South- or west-facing spots (in the Northern Hemisphere)

If natural light is limited, a small LED grow light can make up the difference. Hang it about 6 to 12 inches above the foliage (check your light’s directions) and run it 12 to 14 hours a day.

Mint grown in low light tends to stretch out and produce thin, weak stems instead of full, leafy growth.

Rotate the pot every few days so all sides get even exposure and the plant doesn’t lean toward one direction.

Temperature Range

Mint handles typical indoor conditions well, but sudden temperature swings can slow growth or cause leaf drop.

Keep pots a few feet away from drafty windows in winter and away from radiators or vents that blow hot, dry air.

• Ideal Range: Between 65 and 75°F (18 to 24°C)

• Things to Avoid: Cold drafts and heating vents

A steady room temperature year-round keeps mint growing without the stress of sudden hot or cold blasts.

Watering Needs

Mint prefers evenly moist soil rather than bone-dry or soaked conditions.

Check the soil with a finger before watering, since overwatering is one of the most common reasons indoor mint struggles.

• Watering Cue: When the top inch of soil feels dry

• Drainage Check: Never let the pot sit in water

• Quick Test: A pot that feels light is ready for water

Watering by the calendar instead of the soil is an easy habit to fall into, and learning to spot what your plant actually needs works just as well for mint as it does for any other houseplant.

When you do water, water thoroughly until it runs out the drainage holes, then empty the saucer so roots aren’t sitting in standing water (a fast track to root rot).

Soil Requirements

Regular garden soil holds too much water and compacts in containers, so a lighter indoor potting mix works much better for mint. Mixing in perlite or coarse sand improves drainage and keeps oxygen reaching the roots.

• Base Mix: Use a well-draining potting mix

• Added Texture: Perlite prevents waterlogging around roots

• Ideal pH: About 6.0 to 7.0

This slightly acidic to neutral range supports healthy growth and helps the plant absorb nutrients.

Humidity and Airflow

Mint likes moderate humidity and good air circulation. Don’t crowd it against other plants, and if your home gets very dry in winter, place the pot near (but not touching) other houseplants.

Good airflow also helps prevent fungal problems like mint rust.

Keeping Your Mint Bushy and Productive

Regular pruning and harvesting keep your mint plants productive and stop them from getting leggy or sparse.

A few simple habits do most of the work:

• Pinch back stem tips regularly to encourage branching and fuller plants.

• Harvest in the morning after dew dries but before the afternoon heat.

• Cut stems just above a leaf node so new growth emerges where you snipped.

• Remove flower buds as they appear to keep the plant’s energy going into leaves (and the flavor at its best).

• Give the whole plant a hard haircut a few times a year, cutting it well back so it pushes out a flush of fresh, flavorful growth.

The more you harvest, the more your mint produces! Pruning is how you tell the plant to keep growing.

Common Indoor Mint Problems

Even the easiest houseplants run into the occasional hiccup, and mint is no exception.

Here’s how to spot the common ones and get your plant back on track.

Problem 1: Yellowing Leaves

Solution: Yellow leaves often signal overwatering or poor drainage, which leaves roots sitting in soggy soil.

Make sure your pot has adequate drainage holes, and let the top inch of soil dry out between waterings.

Problem 2: Leggy, Stretched Growth

Solution: When mint grows tall and sparse with long gaps between leaves, it’s reaching for more light.

Move it closer to a bright window or add a grow light 6 to 12 inches above the foliage.

Problem 3: Pests Like Spider Mites and Aphids

Solution: Indoor mint occasionally attracts tiny pests that cluster on the undersides of leaves and new growth.

Rinse the leaves with lukewarm water, gently wipe them down, or spray with a diluted neem oil solution.

Growers in communities like r/herbs regularly swap notes on overwatering mishaps, lighting tweaks, and pest control for indoor mint.

If clusters keep returning on new growth, check for aphid damage on houseplants before picking a follow-up treatment.

Problem 4: Fungus Gnats

Solution: Tiny flies hovering around the soil usually mean the mix is staying too wet.

Let the top inch dry out between waterings and use yellow sticky traps to catch the adults.

Problem 5: Mint Rust

Solution: Rust-orange spots on the stems and undersides of leaves point to mint rust, a fungal disease. Remove the affected plant, scrub the pot with household disinfectant, and start over with fresh potting mix and a healthy new plant.

Enjoying Your Fresh Mint Harvest

Your thriving mint plants offer so much more than fresh flavor.

Put your harvest to work in the kitchen and as homegrown gifts:

• Brew soothing herbal teas by steeping fresh leaves in hot water with honey and lemon.

• Muddle mint into mojitos, lemonade, and other cocktails for instant refreshment with homegrown flair.

• Toss leaves into salads, fruit bowls, and yogurt parfaits for bright, aromatic pops of flavor.

• Pot up rooted cuttings in small containers (or keep them in a jar of water) tied with twine as thoughtful living gifts for friends and family.

• Dry or freeze extra leaves when the plant gets ahead of you, so nothing goes to waste.

Your indoor mint becomes a renewable supply that keeps on giving. Every snip means more fresh leaves on the way!

Frequently Asked Questions (FAQs)

How Long Does Mint Take to Grow Indoors?

Cuttings root in water in about one to two weeks and are ready for light picking once the potted plant reaches about 4 inches tall. Seeds sprout in 10 to 15 days but need about two to three months to reach harvest size.

Can Mint Survive Without Direct Sunlight?

Yes, but it grows more slowly and gets leggier without at least four hours of direct sun a day. A grow light running 12 to 14 hours a day can substitute.

Does Indoor Mint Need a Big Pot?

No. A 6- to 8-inch pot works fine to start, though you’ll need to divide or repot within about a year as it spreads.

Can I Grow Mint From Store-Bought Sprigs?

Often, yes! Pick firm stems with healthy tips, strip the lower leaves, and stand them in water. Many will root within a week or two.

Can You Grow Peppermint From Seed?

Not true peppermint. It’s a sterile hybrid, so seed sold as “peppermint” usually grows a spearmint type. Start peppermint from a nursery plant or a cutting instead.

Wrapping Up!

Learning how to grow mint indoors opens up a world of aromatic possibilities right on your windowsill.

With the right container, consistent care, and a little attention to light and water, your mint will reward you with lush, flavorful leaves that brighten everything you make.

The beauty of growing mint indoors lies in its forgiving nature and generous growth, making it the perfect companion for both new and experienced plant parents.

Now it’s your turn to get those hands dirty and watch your kitchen garden flourish.

Drop a comment below sharing your favorite way to use fresh mint or any growing tips you have found along the way!