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Container-Grown Mint Guide

easyGardening30 min

Safety Warnings

  • Mint can cause vomiting and diarrhea in dogs, cats, and horses if eaten in large amounts.

Tools Needed

Pruning shears — Sharp garden scissors or shears
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Trowel — Small hand trowel
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Materials

Container — 12-inch diameter pot (clay, terra-cotta, or plastic) with drainage holes(1 per plant)
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Potting soil — Light, well-draining potting mix (pH 6-7.5)(As needed to fill pot)
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Landscape fabric — Permeable fabric for drainage hole covers(Small strips)
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Mint seedling — Healthy plant at least 3-4 inches tall(1)
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Steps

1
Prepare the container by covering the drainage holes with a few layers of landscape fabric to prevent roots from escaping through the bottom.
Place fabric over holes Landscape fabric Potting container Drainage hole Cross-section · Fabric prevents soil loss and root escape while allowing water exit
2
Fill the container with light, well-draining potting soil. Do not pack the soil too tightly to ensure the roots can breathe.
Tip: To lower soil pH, you can add compost or composted manure.
3
Dig a hole large enough to accommodate the root ball of a 3- to 4-inch tall mint seedling. Place the plant in the center of the pot and backfill the soil around it.
Tip: If planting multiple plants in one large container, space them 12 inches apart.
Root ball Potting soil Mint seedling lower into hole Cross-section: Center the root ball in the pre-dug hole before backfilling.
4
Water the seedling immediately after planting. Provide approximately 6–8 fluid ounces of water for a single plant to settle it into position.
5
Place the container in a location with full sun or partial shade. In southern climates, provide morning sun and afternoon shade to protect the plant from extreme heat.
Tip: If growing indoors, ensure the plant receives at least 5 hours of sunlight per day or 14 hours of LED/fluorescent grow light.
6
Maintain consistent moisture by watering at least every 2-3 days, or as often as daily during summer. The soil should remain moist but not soggy.
Tip: Check moisture by sticking your finger into the soil up to the second knuckle; water only if it feels dry.
7
Apply a water-soluble organic fertilizer intended for edible plants once in spring and once in early summer, following the label directions.
8
Prune the plant regularly to encourage succulent growth. Pinch off the tips of seedlings to promote branching, and trim any runners that dangle over the sides of the pot to prevent them from rooting in the ground below.
Runner Seedling tip Container trim runner Pruning · Cut trailing stems to prevent rooting outside the pot
9
Remove flower buds with sharp scissors as soon as they appear. Preventing the plant from blooming ensures the leaves maintain a superior flavor.
10
Harvest leaves once the plant is established (after 2-6 weeks). For maximum flavor, harvest in the morning of a sunny day after the dew has dried, but before the plant blooms.

Pro Tips

  • Avoid over-fertilizing, as excess nutrients can promote lush green growth but reduce the flavor of the leaves.
  • To manage pests like caterpillars or grasshoppers, simply pick them off by hand rather than using chemical pesticides.

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