When to Plant Mint
The herb that grows too well. Plant mint in a container unless you want it to take over your garden. Refreshing in drinks and cooking.
The Short Answer
How to Grow Mint
Mint's reputation for aggressive spreading is well-earned — a single plant can colonize an entire garden bed in one season through underground runners (stolons). Always grow mint in containers, even if those containers are buried in the ground. The flavor varies dramatically between species: spearmint is classic for tea and cooking, peppermint is strongest in menthol, chocolate mint is surprisingly chocolate-scented, and mojito mint is the bartender's choice. Harvest frequently by cutting stems to 1 inch above soil — mint responds to aggressive cutting with vigorous, flavorful new growth.
Starting Seeds Indoors
Begin mint seeds indoors 8 weeks before your average last frost date. Seeds need soil temperatures of at least 60°F to germinate, which typically takes 10-15 days. Provide 12 hours of light per day using a south-facing window or grow lights.
Transplanting
Move seedlings outside 0 weeks after your last frost date, once soil temperatures reach 60°F. Harden off seedlings for 5 days before transplanting by gradually exposing them to outdoor conditions.
Direct Sowing
Mint can be direct sown 0 weeks after your last frost date. Plant seeds 0.25" deep, spaced 18" apart.
Growing Tips
ALWAYS plant in a container — mint spreads by underground runners and will colonize your entire garden if planted in the ground.
Companion Planting
Good companions:
Mint Planting Dates by State
Click your state for mint planting dates specific to your location:
Last reviewed: March 29, 2026