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Mentha spicata

Spearmint

Fresh leaves for tea and cooking, plus flowers for insects; a separate pot keeps its roots from taking over beds.

Grows in Zones 4–11Growing guide
Spearmint growing or ready to harvestPhoto: Forest-and-Kim-Starr · CC BY 2.0

Set your expectations

How long until you can harvest?

Light harvest about 4–8 weeks after planting a rooted start
Cold-weather notePlant during mild weather and protect container roots from severe cold.
Start withA nursery plant or rooted division; seed where suitable
Life cycleHardy, spreading perennial
DifficultyEasy to moderate

Your seasonal plan

When to grow spearmint in Zone 6.

Adjust these windows to your local frost dates and harvest only while the plant is growing actively. These are useful planning windows, not exact weather guarantees.

Typical planting windowApril–May
Typical harvest windowJune–September

Growing essentials

What spearmint need to thrive.

Use the practical details below with your Zone 6 timeline. Current weather and the variety you choose can shift timing.

LightFull sun to part shade
SoilRich, moist but well-drained soil
Planting depthPlant the rooted start at the same depth as its original pot.
SpacingOne plant in a 12-inch or larger container
WaterKeep evenly moist; container mint dries quickly in warm weather.
Best conditionsMatch planting to local frost dates; mature hardiness and summer heat tolerance vary.

How to plant

Plant it well.

Start with a nursery plant or division in spring. Use a separate container on a hard surface and watch for roots escaping drainage holes.

Indoors or containers

Works in a bright window or under lights with consistent moisture and its own draining pot.

Keep it growing

Care through the season.

  • Pinch regularly for fresh leafy growth. Let a few stems flower if pollinators are a priority.
What to avoid

Planting loose in a vegetable bed; creeping roots and rooting stems can spread quickly.

Ready to harvest

Know the cue, not just the date.

  • Snip leafy stems above a pair of leaves once plants are growing well. Pick before flowering for the strongest leaf quality.

How we know

Sources and growing guidance.

The growing essentials and seasonal planning windows are original summaries informed by university Extension references; always adjust for current local weather and variety instructions.

Spearmint: plant profile and cultivationNorth Carolina State ExtensionGrowing herbs in home gardensUniversity of Minnesota Extension

Extension sources checked · November 2026. Seasonal windows are planning estimates.