Growing Mint in Containers: A Beginner's Guide

How to Grow Mint Successfully in Pots (Especially Indoors)

Mint (Mentha spp.) is one of the easiest herbs to propagate—but also one of the most invasive. For apartment dwellers, containers are essential. Here's how to keep mint happy, productive, and contained.

Propagation: Division Is Easiest

Mint spreads via underground runners. The simplest method: divide an established plant. In spring or early summer, lift the root ball, tease apart sections with roots attached, and replant. Within 2–3 months, you'll have a full pot.

Container & Soil Requirements

• Pot: Plain clay (terra cotta), 8-inch diameter max for the first year. Clay breathes, preventing soggy roots.
• Soil: 50/50 mix of potting soil and coarse builder's sand for sharp drainage.
• Drainage: Must have a hole and saucer. Never let water sit in the saucer.

Light & Temperature: The Indoor Challenge

Mint needs full sun—outdoors. Indoors, it rarely gets enough light (even in a south window) and suffers from stagnant air and constant temperatures. It needs a 10°F nighttime drop. If you have a balcony, fire escape, or patio, grow it outside spring through fall. Bring it in only for winter, and expect some decline.

Watering & Maintenance

• Water thoroughly, then wait until the soil is dry deep down (test with a bamboo skewer).
• Pinch stems regularly for tea or cooking—this encourages branching and prevents legginess.
• Don't overfertilize. A light feed monthly in growing season is plenty.

Key Takeaway

Mint wants to be a wild, sun-loving, ground-covering perennial. In a pot indoors, it's a compromise. Give it maximum light, excellent drainage, and a seasonal outdoor vacation for best results.