Mint is a hardy perennial valued for aromatic leaves in sauces, salads, summer drinks and desserts. It is remarkably willing in Britain, but its underground runners spread quickly. Growing it in a pot keeps vigorous types, including spearmint and peppermint, properly contained.

When and how to sow

Buy a young named plant in spring, or take a division from a healthy clump, rather than sowing seed. Plant in a container at least 30 cm wide, filled with moisture-retentive potting compost, or sink a bucket in the ground to contain runners. Position it in sun or light shade. Water thoroughly after planting and allow room around it for air movement.

Care

Keep mint consistently moist, especially in pots during warm weather. Top-dress with compost each spring and cut stems back several times through summer to produce soft new foliage. Lift and divide crowded clumps every few years, ideally in spring, replanted into fresh compost or soil.

Common problems

Mint rust appears as rusty orange-brown markings, often when growth is crowded or damp. Remove affected shoots promptly and clear fallen leaves. Give containers space and water at the base. Powdery growth can also occur in dry, crowded conditions, so cut back plants to improve airflow.

Harvest

Snip individual stems whenever plants are growing strongly, choosing young shoots for the best culinary flavour. Regular cutting prevents lanky growth and supplies fresh leaves for mint sauce, salads and drinks. Before flowering, cut a larger batch to dry or freeze, leaving enough stems for regrowth.

Growing Mint: frequently asked questions

When should I sow mint in the UK?

Buy a young named plant in spring, or take a division from a healthy clump, rather than sowing seed.

What are common problems when growing mint?

Mint rust appears as rusty orange-brown markings, often when growth is crowded or damp.

When is mint ready to harvest?

Snip individual stems whenever plants are growing strongly, choosing young shoots for the best culinary flavour.

General guidance for UK home gardens and allotments. Reference figures are typical values; your exact timing depends on your region, last-frost date and variety. Page updated 19 Sep 2026.