In the Garden
This mint plant is happy tucked into a corner of a vegetable and herb garden, where it is kept in check by regular replanting of the areas all around it.
Mint tolerates light frost, but the top will eventually die back in winter in all but the mild coastal climates. Roots are hardy in zones 6 though 9.
Whether you grow common mint, spearmint, or peppermint, all are fast-growing, spreading plants, so you must give them a place to spread without getting in the way, or plant in a pot. Mint sends out runners that spread above and just under the ground, quickly forming large, lush green patches. In the right place it makes a pretty seasonal ground cover. You can also contain mint in tight places such as between pavers of a walkway where your feet will brush against the leaves to release its fragrance.
Soil, Planting, and Care
Start with mint transplants set out in the spring or in the fall in frost-free climates.
The most popular way to grow mint is in a pot where you can keep it in check and handy near the kitchen for a constant supply of sprigs. Add water-retaining polymer to the potting soil to be sure that it stays moist.
In the ground, select a damp area in your garden in either full sun or part shade. Mint prefers fertile soil with a pH from 6.0 to 7.0. Add a slow-release fertilizer to the soil before or while planting, and reapply every spring. Keep the soil moist and mulch around the plant to keep its roots moist. Plants will die back in dry soil.
Keep plants in check by harvesting the tips regularly and pulling up wayward runners. Mint’s small flowers bloom from June to September; trim these before the buds open to keep the plant compact. Although slightly frost tolerant, the top of mint will eventually die back in winter except in zones 8 and south, but the root are quite hardy surviving into zone 6. Lift and replant your mint every 3 to 4 years to keep your patch’s flavor and scent strong.
Troubleshooting
Although mint is a rugged plant, when it is young it is vulnerable to whiteflies, blackflies, spider mites, snails, and slugs.
Harvest and Storage
Harvest mint leaves by pinching off stems anytime. For a large harvest, wait until the flavor is most intense just before the plant blooms, and cut the whole plant to just above the first or second set of leaves. In the process, you will remove the yellowing lower leaves and promote bushier growth. Three such harvests per season are typical for mint.
Uses
Fresh mint leaves are a nice complement to lamb, fish, poultry, and vegetables such as peas, new potatoes, and carrots. Mint also blends well with green or fruit salads and beverages such as punch and tea. Two very well-known drinks, mint julep and Cuban mojito, both depend on spearmint for their cool zest.
Freeze mint in cubes for iced tea. You can also preserve it in vinegar or dry it for potpourri or sachets.