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Plant Guide

How to Grow Mint

Everything you need to grow mint well — when to plant, how to prepare the soil, what to feed it, what usually goes wrong, and how to tell it's ready to harvest.

Mint growing in a garden

When to plant

Plant in spring after last frost. Mint is a perennial and will come back each year. It's a great container herb and can even be grown on a sunny windowsill indoors year-round.

Soil & site

Mint grows in almost any soil and is one of the least fussy herbs. It prefers consistently moist, well-drained soil and tolerates partial shade. Important: grow mint in a container or with a root barrier — it spreads aggressively underground via runners and will take over a garden bed.

Feeding

Mint is a light feeder. A balanced fertilizer once in spring is usually all it needs. Over-feeding produces fast but less aromatic leaves.

Common problems

Root rot in waterlogged soil. Mint rust (orange pustules) — remove affected stems, improve drainage. Aphids and spider mites in dry conditions. Invasive spreading via underground runners — the main "problem" with mint is containing it.

When to harvest

Mint is ready to harvest once it's 10–15 cm tall. Best flavour is just before flowering — harvest the top third before flower buds appear. The leaves should be bright green and aromatic when rubbed.

How to harvest

Pinch or cut stems back by one-third at a time, always cutting just above a leaf node to encourage branching. Remove any flowering stems immediately to maintain leaf quality. Mint is vigorous — regular harvesting is needed to keep it from becoming woody and sprawling.

Storage & use

Stand fresh mint in a glass of water on the counter for up to a week. Or wrap in damp paper towels in the refrigerator for 5–7 days. To dry: hang small bunches upside down in a warm, dry, ventilated spot for 1–2 weeks. Dried mint keeps its flavour for about a year in an airtight container.

Useful for growing mint

A few things that make this one easier — chosen for this plant, not a generic list.

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