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Herb · Lamiaceae family

Spearmint

Mentha spicata

Full sun to part shade 0.3–0.6 m × 0.3–0.6 m Flowers July–September Harvest March–November to −29 °C
Flower colours Click a colour

In short a 10-second read

SunFull sun to part shade
Size0.3–0.6 m
spacing 30 cm
Water~24 l/m²
a week in a dry summer
FlowersJuly–September
PruningFebruary–March
WinterNo winter protection

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average to moist soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

acidic to neutral soil
acidicneutralalkaline
average to moistnot fussy about soil

Watering

Spearmint — Watering
~24 l/m²a week in a dry summer
keep the soil evenly moistless when it rains

Frost

−29 °C
no winter protectiondies back in winter, regrows in spring

How much space it takes

Mature size.

The mature plant next to a person (175 cm).

50 cm1 m1.5 m0.3–0.6 mspread 0.3–0.6 m
0.3–0.6 m× spread 0.3–0.6 m

Plant 30 cm apart.

How to plant: singly

Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Months for Central Europe. The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberSowing: JanuarySowing: FebruarySowing: MarchSowing: AprilSowing: MaySowing: JuneSowing: JulySowing: AugustSowing: SeptemberSowing: OctoberSowing: NovemberSowing: DecemberPlanting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberPruning: JanuaryPruning: FebruaryPruning: MarchPruning: AprilPruning: MayPruning: JunePruning: JulyPruning: AugustPruning: SeptemberPruning: OctoberPruning: NovemberPruning: DecemberHarvest: JanuaryHarvest: FebruaryHarvest: MarchHarvest: AprilHarvest: MayHarvest: JuneHarvest: JulyHarvest: AugustHarvest: SeptemberHarvest: OctoberHarvest: NovemberHarvest: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersSowingPlantingFeedingPruningHarvest
Now, in October: time to harvest.
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

July–September · white or pink

Sowing

JanFebMarAprMayJunJulAugSepOctNovDec

sow indoors: March

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–April, September–October

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

March–April

Pruning

JanFebMarAprMayJunJulAugSepOctNovDec

cut back to the ground (February–March)

Harvest

JanFebMarAprMayJunJulAugSepOctNovDec

March–November

What to plant now (October) full list in October (244) →

Feeding

Nutrition.

Compost

3 l/m² once in spring · March–April

JanFebMarAprMayJunJulAugSepOctNovDec

Pruning

When and how to prune.

Months apply to Central Europe.

Spearmint — Cut back to the ground

Cut back to the ground

FebMar
How to prunePrune hard: all of last year’s stems back to a low framework or the ground.

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

High riskMedium riskLow riskRisk for this plant according to the source · no label = no documented level
Mint rust

Mint rust

Puccinia menthae
Medium riskdisease
More about this problem

What you will see

Pale, twisted spring shoots; dusty orange, later yellow and black pustules on leaves and stems.

The source says: it is a common disease of garden mint.

When to look

Spring – autumn

How to protect

  1. Prevention
    • Remove affected plants before black winter spores form.
  2. By hand earlyDig up and destroy affected plants and rhizomes; replant healthy, unaffected stems elsewhere.
  3. By hand early autumnSoak washed rhizomes for 10 minutes in water at 44 °C (no hotter), cool and plant — a nurserymen's method.
Mint rustdisease · spring – autumnMedium risk

What you will see

Pale, twisted spring shoots; dusty orange, later yellow and black pustules on leaves and stems.

The source says: it is a common disease of garden mint.

When to look

Spring – autumn

How to protect

  1. Prevention
    • Remove affected plants before black winter spores form.
  2. By hand earlyDig up and destroy affected plants and rhizomes; replant healthy, unaffected stems elsewhere.
  3. By hand early autumnSoak washed rhizomes for 10 minutes in water at 44 °C (no hotter), cool and plant — a nurserymen's method.
More about this problem

What you will see

White powdery coating on leaves, stems and flowers; leaves may become distorted.

The source says: it is among the ornamental plants susceptible to powdery mildew.

When to look

From spring onwards

How to protect

  1. Prevention
    • Destroy fallen infected leaves in autumn; do not over-feed, and protect from drought (stress invites powdery mildew).
  2. By hand autumnPrune out infected shoots early and destroy fallen leaves.
Powdery mildewsdisease · from spring onwardsMedium risk

What you will see

White powdery coating on leaves, stems and flowers; leaves may become distorted.

The source says: it is among the ornamental plants susceptible to powdery mildew.

When to look

From spring onwards

How to protect

  1. Prevention
    • Destroy fallen infected leaves in autumn; do not over-feed, and protect from drought (stress invites powdery mildew).
  2. By hand autumnPrune out infected shoots early and destroy fallen leaves.
More about this problem

What you will see

Coarse pale speckling on the upper leaf surfaces; leafhoppers on the undersides.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
April–September

How to protect

  1. Prevention
    • Affected herbs are safe to eat; no control is needed.
  2. BiologicalEncourage natural enemies (ladybirds, wasps, ground beetles, birds).
Sage and Ligurian leafhopperspest · April–September

What you will see

Coarse pale speckling on the upper leaf surfaces; leafhoppers on the undersides.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
April–September

How to protect

  1. Prevention
    • Affected herbs are safe to eat; no control is needed.
  2. BiologicalEncourage natural enemies (ladybirds, wasps, ground beetles, birds).
More about this problem
Blue mint beetle

Blue mint beetle

Chrysolina coerulans
pest

What you will see

Holes in mint leaves, metallic blue beetle (7 mm) and black larvae on the leaves.

When to look

Spring – autumn

How to protect

  1. By handPick off beetles and larvae by hand.
Blue mint beetlepest · spring – autumn

What you will see

Holes in mint leaves, metallic blue beetle (7 mm) and black larvae on the leaves.

When to look

Spring – autumn

How to protect

  1. By handPick off beetles and larvae by hand.
Mint moth

Mint moth

Pyrausta aurata
pestsource covers the whole genus
More about this problem

What you will see

Caterpillars bind shoot tips and flower clusters with silk threads and eat the leaves.

When to look

Spring – summer

How to protect

  1. Prevention
    • Damage is rarely serious; caterpillars are food for other wildlife.
  2. By hand from the end of AprilFrom the end of April check and remove caterpillars by hand; cut back heavily affected shoots.
Mint mothpest · spring – summer

What you will see

Caterpillars bind shoot tips and flower clusters with silk threads and eat the leaves.

When to look

Spring – summer

How to protect

  1. Prevention
    • Damage is rarely serious; caterpillars are food for other wildlife.
  2. By hand from the end of AprilFrom the end of April check and remove caterpillars by hand; cut back heavily affected shoots.
More about this problem
Sources (8)

Frequently asked

Quick answers.

When does spearmint flower?

In July–September; the flowers are white or pink.

When do I sow spearmint?

In March (sow indoors).

When is spearmint harvested?

In March–November.

Does spearmint tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does spearmint need?

At maturity 0.3–0.6 m wide and 0.3–0.6 m tall; recommended spacing 30 cm.

Sage and Ligurian leafhoppers — what can you do?

Affected herbs are safe to eat; no control is needed. Encourage natural enemies (ladybirds, wasps, ground beetles, birds).

Blue mint beetle — what can you do?

Pick off beetles and larvae by hand.

Sources (7) Checked 20 October 2026

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