Mint Mentha spp.
Reviewed June 2026 · how we check this
The vigorous, fragrant ground-coverer of the herb garden — a hardy perennial whose cooling, menthol-scented leaves flavor teas, drinks, and desserts. Almost impossible to kill and famously aggressive, mint spreads by runners and is happiest contained in a pot before it conquers the whole bed.
Light
Mint is easygoing about light and grows in everything from full sun to partial shade, which makes it one of the few herbs that produces well in a less-than-blazing spot. Six or more hours of sun gives the densest, most aromatic growth and the strongest menthol oils, but in hot-summer climates a little afternoon shade keeps leaves from wilting and scorching. In deep shade it survives but grows lank, sparse, and pale. Indoors, set it at your brightest window — an east or south sill — and supplement with a grow light through winter, since weak indoor light leaves mint floppy and thin-flavored. A spot with morning sun and afternoon relief is close to ideal in most gardens.Watering
Mint is a moisture-lover and the thirstiest common herb — keep the soil consistently damp, never letting it dry out completely. In its native streamside habitat it grows with permanently moist feet, so it wilts fast in dry soil and crisps at the leaf edges. Water deeply whenever the top inch begins to dry, which in summer heat or a container may mean daily. Mulching outdoor plants conserves moisture beautifully. That said, it still wants drainage and won't thrive in a stagnant bog, so pair steady moisture with a pot or bed that drains. Containers dry quickest of all, so check them often and never let a potted mint go bone dry.Soil & potting
Mint isn't fussy but does best in rich, moisture-retentive yet well-drained soil amended with compost, at a near-neutral pH of 6.0–7.0. It tolerates heavier, damp ground that would rot fussier herbs, which suits its love of moisture. In containers use a quality potting mix in a pot with drainage holes — and because mint's roots spread aggressively, a wide, contained pot is the smart choice even in the open garden to stop it overrunning everything nearby. Sinking a bottomless pot into the bed keeps the runners corralled. Refresh container soil yearly, since vigorous mint exhausts a pot fast.Humidity & temperature
Mint is hardy and cool-tolerant, a true perennial that dies back to the roots in winter and returns each spring across Zones 3–8. It grows most lushly in mild conditions of 55–70°F and shrugs off frost, though hard freezes send the top growth dormant. Average to humid air suits it; in very dry rooms or arid climates the leaf edges can brown, so indoor plants appreciate a touch of humidity. Give plants airflow and spacing, because crowded, stagnant conditions invite rust and powdery mildew. In the coldest zones a winter mulch protects the crown, and potted mint can be wintered in an unheated garage or a bright cool room.Fertilizing
Mint is a light feeder and over-fertilizing actually dilutes its essential oils and flavor, so go easy. Work compost into the bed at planting, then feed established plants just once or twice through the growing season with a balanced liquid fertilizer at half strength — a feeding in spring as growth resumes and perhaps another after a hard cutting back. Container mint, flushed by frequent watering, benefits from a light monthly feed in spring and summer. Skip heavy nitrogen, which produces floppy, watery growth with muted aroma. For most gardeners, compost-rich soil and the occasional dilute feed are all mint ever needs.Pruning & maintenance
Frequent harvesting is the best thing you can do for mint — pinch or snip stems just above a leaf pair to trigger bushy branching, and harvest from the top down often to keep growth tender and compact. Crucially, cut off flower spikes as they form: once mint blooms, leaf flavor fades and the plant slows. A hard shearing back by half mid-season rejuvenates leggy, woody growth and forces a flush of fresh leaves. Cut the whole plant nearly to the ground in late fall after dieback, or in early spring before new shoots emerge, to keep the patch vigorous. Regular cutting also helps curb its relentless spread.Propagation
Mint is famously easy to multiply and rarely grown from seed, since named varieties like peppermint and spearmint don't come true and seedlings are slow and variable. The simplest method is division: in spring or fall, lift an established clump and pull or cut it into rooted sections, then replant. Even easier, snip a 4-inch non-flowering stem, strip the lower leaves, and root it in a glass of water on a bright sill — roots appear within a week or two. Mint also self-layers, so any runner touching soil roots on its own; just sever a rooted piece and move it. From a single plant you'll have all the mint you could want.Common problems
Through the year
Spring
Growth surges from the roots — divide and replant crowded clumps, refresh container soil, feed lightly, and start harvesting the first tender shoots.
Summer
Peak season — harvest from the top often, pinch off flower spikes, keep the soil consistently moist, and shear leggy plants back by half to force fresh growth.
Fall
Take a final heavy harvest before frost, divide or pot up pieces to overwinter, and cut spent top growth back as the plant dies down.
Winter
Outdoor mint goes dormant and returns in spring — mulch the crown in cold zones; grow a potted division indoors at a bright window for fresh winter leaves.
Companion planting
Classic companions: cabbage and other brassicas, tomatoes, and peas; its scent helps deter aphids, cabbage moths, and ants — but keep it contained, as runners crowd out neighbors.
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