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Grow Mint Indoors All Year: Step-by-Step Guide From Seed to Harvest (2023)

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grow mint from seed indoorsYou’ve got a craving for the intoxicating aroma and zesty flavor of fresh mint. Growing this fragrant herb indoors will satisfy your yearning and enhance your culinary creations. With proper growing conditions, starting mint from seed is surprisingly simple. Just imagine tender young mint leaves ready for harvest on your kitchen windowsill.

Let your senses delight in homegrown mint. The cooling scent of peppermint soothes while the menthol tingle invigorates. Enjoy the floral sweetness of apple mint or the licorice twist of orange mint. Crush leaves between your fingers and inhale deeply for the ultimate sensory experience.

Grow a mini mint meadow in pots set around your living space. Tuck mint into pretty planters on shelves and tables to uplift your indoor decor. Getting started is easy. This guide details supplies needed plus step-by-step growing and care.

Key Takeaways

  • Start seeds indoors 6-8 weeks before last frost for a head start on the growing season.
  • Use small containers like cells or peat pots filled with seed starting mix, not potting soil.
  • Place the seed containers in a sunny south facing window or under grow lights.
  • Transplant the seedlings outdoors after all danger of frost has passed.

Mint Growing Conditions

Mint Growing Conditions
Before sowing those mint seeds, let’s discuss the essentials for healthy germination and growth. Mint prefers a rich, organic medium that drains well, and although it grows best in full sun, seedlings will thrive near a bright, south-facing window.

Be sure to keep the soil consistently moist but not soggy during germination and the initial few weeks after sprouting while the seedling establishes roots.


When prepping soil for your mint seeds, be sure it’s rich in organic material and drains well so the young roots don’t get waterlogged. As a horticulturist, I recommend a loose, loamy soil with ample compost worked in for planting mint plants.

The ideal soil composition for transplanting mint includes slightly acidic soil with a pH around 6.5-7n0. Whether you are planting mint in beds or containers, incorporate organic matter like compost or aged manure to enrich the soil and help retain some moisture while still draining well.


You’ll crave those fresh minty mojitos once your seeds soak up ample sunlight on the sunniest windowsill in your home. Mint thrives in bright light, requiring at least 6 hours of direct sun daily for robust growth and flavor.

Situate seedlings or purchased plants in an east or south facing window where sunlight streams in for a good portion of the day. Some filtered sunlight can be tolerated, but significant hours of direct sun are ideal.

Light fuels photosynthesis, spurring leaf production and compact, bushy foliage. Drainage holes in containers allow excess moisture to escape, preventing soggy soil.

With plentiful sun access, your mint will delight the senses!


Quench your seedlings’ thirst with steady watering for lush, verdant indoor mint. Aim for moist, not soggy soil. Water when the top inch dries out, providing a deep drink before allowing it to dry. Too much moisture invites disease problems and insect pests that can ruin your entire plant.

Focus on optimal drainage and consistent moisture for a bountiful harvest of leaves.

Starting Mint From Seed

Starting Mint From Seed
When starting mint from seed, you’ll want to get the timing right. For indoor sowing, plan to plant your mint seeds 8-10 weeks before the last expected frost date in your area. This gives the seedlings enough time to develop roots and leaves before being moved outside.

Begin by filling small containers with seed starting mix and sowing the tiny seeds just 1/4 inch deep. Place the planted containers in a sunny south-facing window or under grow lights. Maintain warm soil temperatures around 70°F and keep the mix consistently moist but not soaked.

In about 7-14 days, the first seed leaves should emerge. Nurture the seedlings indoors until transplanting time arrives after the danger of frost has passed.

When to Plant

The soil’s prepped and you’re eager, but hold those seeds ’til it’s the perfect time for plantin’. Inside, start mint seeds 6-8 weeks before your last expected frost so they’ll be ready for transplantin’ once danger has passed.

Sow seeds just 1⁄4 inch deep in seed startin’ mix and keep ’em warm, around 70°F. Germination takes 1-2 weeks so be patient, mama mint. Once sprouted, move ’em to a sunny spot and care for those seedlings till it’s safe to transplant outdoors.

Waitin’s the hardest part when you’re itchin’ to get plantin’, but hold off sowin’ seeds too early. A little patience pays off with hearty transplants ready to thrive once outside temperatures are ideal for your new mint to take off growin’.

Planting Indoors Vs Outdoors

Starting mint from seed indoors lets ya get a 6 week head start on growin’ before movin’ those seedlings outdoors after the last frost.

  • Get a jump on the growin’ season
  • Start seeds in a warm, sunny spot indoors
  • Use seed startin’ mix and grow lights
  • Care for seedlings til ready to transplant
  • Hardened off plants adapt to the outdoors

Plantin’ those tiny seeds indoors gives mint a head start on summer. With ample warmth and light they’ll sprout up quick, ready to thrive when it’s time to transplant outdoors. Nurture the seedlings indoors and soon you’ll have vigorous mint ready to fill your garden with that sweet aroma and flavor.

Growing Mint From Seed Indoors

Growing Mint From Seed Indoors
To grow mint from seed indoors, you’ll need a few basic supplies: seed starting mix, containers, water, and light. Begin by filling your containers with quality seed starting mix. Gently press the tiny seeds into the mix, about 1/4 inch deep.

Place the planted containers in a sunny window or under grow lights; keep evenly moist and watch for the first seed leaves to emerge in 1-2 weeks. With just a little time and care, you’ll have homegrown mint seedlings ready for their new home outdoors after the last frost.

Supplies Needed

You’ll need some small containers, seed starting mix, and a sunny south window to grow mint from seed indoors. Pick up a seed-starting tray or some peat pots to plant each seed separately. They’ll restrain those vigorous mint roots.

Grab some sterile, lightweight starting mix too. It retains moisture well for germinating seeds.

Place your planted containers on a sunny windowsill or under grow lights to ensure consistent warmth and sunlight. Keep that soil moist by watering regularly with room temperature water. Don’t let it dry out completely.

Seedlings will emerge within two weeks when cared for properly. Then continue nurturing them indoors until it’s time to transplant. With the right supplies and conditions, you’ll be harvesting homegrown mint in no time.

Step-by-Step Instructions

Harvest fresh mint with ease when you simply sow seeds in trays, nurture sprouts on sunny sills, then snip leaves as the fragrant foliage fills pots.

Come spring, fill starter trays with moist seed mix. Gently press peppermint or spearmint seeds into the soil, 1/4 inch deep. Set the planted trays in a south window; keep evenly moist. In just 7-14 days, tiny sprouts emerge.

Let seedlings grow under bright light until the weather warms. Once frost danger passes, it’s time to transplant outdoors. Gently remove each small mint plant, taking care not to disturb the roots. Plant them in prepared garden beds or roomy containers.

Then watch your herbs thrive and reach for the scissors to enjoy fresh mint anytime.

Caring for Indoor Mint

Caring for Indoor Mint
As your new mint seedlings mature, they will require attentive care to thrive indoors. Water your mint evenly, allowing the soil to dry somewhat between careful soakings to prevent fungal issues; supplement a balanced liquid fertilizer monthly to nourish its fast growth.

Pruning mint frequently keeps its flavor refreshed and prevents straggling, leggy stems; snip off up to one third of each plant’s height every couple weeks, just over leaf nodes.


Keep the mint seedlings’ soil moist, but not wet, as they grow indoors. Water regularly to encourage growth, but avoid overwatering, which can cause issues like root rot. Aim to only water when the top inch of soil is dry. Misting is also great for increasing humidity.

Once your seedlings have a few sets of true leaves, they’ll be ready for transplanting outdoors after the danger of frost has passed.


Give that energized mint a big sip of liquid fertilizer to make it explode with happy, delicious leaves! Feed your seedlings weekly with a diluted liquid fertilizer once they’ve developed a few sets of true leaves.

Look for a balanced organic fertilizer to nourish your plants without risk of chemical burn. Mint is not a heavy feeder, so carefully follow package rates to prevent lanky, weak growth. Fertilize your container plants throughout the season for optimal flavor and productivity.


Snip those leaves often to keep your indoor mint happy and bushy. Frequently harvesting mint prevents it from flowering, so it concentrates energy into leaf growth. Prune mint regularly, about every few weeks. Always use clean, sharp pruners to avoid damaging plants.

Cut each stem down to a leaf node where new growth will emerge. Harvest and prune simultaneously by cutting mint stems for use as you trim plants. This stimulates vigorous regrowth and abundant harvests. Keep pinching off new shoots.

Harvesting Indoor Mint

Harvesting Indoor Mint
Enjoy the tasty flavor tingling your tastebuds while harvesting your homegrown mint anytime you need its aromatic zest, don’t you?

Growing mint indoors allows you to snip fresh leaves to add pungent flavor and fragrance to drinks, desserts, and more right from your kitchen. Run your fingers along the sprigs of peppermint, spearmint, pineapple mint, orange mint, or apple mint, gently squeezing leaves to release those signature scents.

Snip off the top two sets of leaves from each stem just above the leaf nodes using clean, sharp scissors or pruners.

Always cut no more than one third of the plant’s height at a time to keep it actively growing. Harvest often, pruning the plants simultaneously, to encourage tender new growth with the best flavor. Remove any discolored or damaged leaves promptly. Rinse the mint gently if needed and pat dry thoroughly before use.

With indoor mint on hand, you’ll appreciate the ability to season dishes, create aromatherapy blends, or brew tea with garden-fresh mint any time the craving strikes.

Troubleshooting Mint Indoors

Troubleshooting Mint Indoors
Good day! Nothing is more frustrating than walking into your kitchen to harvest homegrown mint, only to find the leaves riddled with pests or shriveled from disease. As an indoor gardener, you must keep a close eye on your potted mints for any signs of infestation and be prepared to promptly remove insects by hand or control outbreaks before they spread.

When growing mint inside, staying vigilant and quickly addressing any pest or disease issues will ensure your plants continue producing an abundant harvest of healthy, flavorful leaves to enjoy.


Glimpse those tiny pests scurrying across leaves and act promptly to prevent problems, won’tcha?

  • Inspect regularly for signs like webbing, biting, or spotting on leaves.
  • Identify the pest to choose the optimal treatment.
  • Wipe leaves with a damp cloth to remove insects.
  • Make natural organic sprays with things like neem oil or insecticidal soap.
  • Apply small amounts directly on pests for spot treatment.

Growing mint indoors means keeping a close eye out for any pests that could hamper its beauty and usefulness for culinary, medicinal purposes, and more.


Watch those spots ‘n’ fuzzies spreadin’ quick across leaves and act fast to nip diseases in the bud, will ya?

First sign o’ trouble, inspect thoroughly and identify the culprit to pick the right fix. Leaf spot and mildew thrive in dampness, so space plants for airflow. Rust hits when it’s wet, so water at soil level.

Remove and toss infected parts pronto to keep trouble from multiplyin’. If needed, make natural sprays with baking soda or horticultural oils to coat healthy leaves.

Grow resistant varieties like ginger mint or pineapple mint if certain diseases keep attackin’. With quick catchin’ and correctin’, your mint’s sure to keep on growin’ strong for harvestin’ leaves aplenty.

Best Mint Varieties for Indoors

Best Mint Varieties for Indoors
Savor the scents of sweet apple mint or refreshing pineapple mint as you nurture their young seedlings into full pots of harvestable herbs indoors. When growing mint from seed, it’s ideal to start with varieties that are naturally compact and well-suited to container gardening.

Fragrant apple mint stays bushy when potted, producing tender leaves with a fruity aroma perfect for teas, desserts, and more. Peppermint and spearmint also thrive indoors, lending that classic minty flavor to drinks, sauces, and other dishes.

For something different, try growing orange or pineapple mint, whose colorful foliage and tropical essences add unique zest.

Start seeds in a sunny window and transplant into roomy pots, pinching back regularly to encourage dense growth. Give your potted mints ample light and prune often to keep them healthy and prolific producers through the seasons.

With a bit of care, mini indoor mints grown from seed offer endless delight for the senses.

Frequently Asked Questions (FAQs)

How long do mint seeds stay viable for sowing?

Mint seeds typically stay viable for 2-3 years when stored properly. To maximize viability, store seeds in a cool, dark place in an airtight container. Check packaging for any specific expiration date. For the best germination rates, sow seeds within 1 year of purchase.

Promptly sowing fresh seeds gives you the greatest chance of success when growing mint from seed indoors.

Should I use a seed starting mix or potting soil when sowing mint seeds?

You want to use seed starting mix, not potting soil, when sowing mint seeds indoors. The lighter mix helps those tiny seeds emerge and establish without compacting. Aim for a fine-textured, loose blend to give your mint babies the best start on life.

Is bottom heat beneficial for starting mint seeds indoors?

Sweet gardener, bottom heat’s boost brings bountiful beginnings for burgeoning baby mint. Though tempting, tender transplants thrive sufficiently without warmth’s welcome. Focus first on fertile, friable soil; furnish ample sunlight. Save bottom heat’s benefits for fussier crops craving cozy comfort.

What kind of light do mint seedlings need indoors?

You’ll need to provide your mint seedlings with plenty of bright, direct light indoors. South- or east-facing windows are ideal. Give them at least 6-8 hours of sunlight daily for robust growth. Supplement natural light with grow lights if needed. Mint thrives on ample light, so don’t let your seedlings become leggy from reaching for the sun.

Can I grow mint entirely indoors under artificial lights?

You sure can grow mint indoors under artificial lights! Provide full spectrum bulbs, sow seeds in starter mix, keep soil moist but not soaked, and give seedlings 14-16 hours of daily light for robust growth.

Once established, pot up mint plants, continue providing ample light, and harvest often for the best flavor.


By happy coincidence, your foray into growing mint indoors from seed has paid off. With a bit of care and patience, you’ll be rewarded with a bountiful indoor mint harvest all year long. Though mint prefers full sun, you’ve proven it can thrive with artificial lighting.

Pay mind to its preferences for moisture and nutrition, and your indoor mint will flourish. Frequent pruning keeps growth robust for continual harvests of richly aromatic, flavorful leaves.

With this simple, foolproof method, fresh mint for cooking, teas, and more is always close at hand, no garden required. Now that you’ve mastered growing mint from seed indoors, you can try other culinary herbs too.

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is a published author and software engineer and agriculture expert from the US. To date, he has helped thousands of people make their yards lush and thick.