Overwintering Mint: Indoor vs. Outdoor Strategies

Flexible Approaches for Mint Survival

Mint is a hardy perennial that can overwinter both indoors and outdoors, depending on your climate and preferences.

Outdoor Overwintering (Recommended for Cold Climates)

• Leave established mint in large pots (16-inch diameter or larger) outdoors year-round.
• Snow cover provides natural insulation; rain and snow supply adequate moisture.
• Plants go dormant and regrow vigorously in spring.
• This method has successfully maintained multiple mint varieties for years in Zone 6.

Indoor Overwintering (For Winter Harvests)

• Keep additional plants in a sunny, cool windowsill (east or south-facing).
• Water sparingly; mint prefers moist but not soggy soil.
• Expect slower growth; harvest lightly to avoid stressing the plant.
• Return pots outdoors when nighttime temperatures consistently exceed 45°F (7°C).

Key Considerations

If your mint is planted in the ground, it will likely survive winter with mulch protection. Potted mint needs larger containers to prevent root binding and freeze damage. For NYC growers (Zone 7a), outdoor overwintering in insulated pots works well.