If you want a mint that is both ornamental and useful in the kitchen, Mentha × 'Berries & Cream' is a great choice. This peppermint-type mint forms leafy, fragrant clumps and sends out underground runners, so it can spread quickly if left unchecked.
Give your plant full sun to part shade. In hotter areas, afternoon shade helps keep foliage lush, especially if your soil dries out between waterings. Keep the soil evenly moist for best growth, and avoid letting the plant bake in dry ground for long stretches.
Expect a mature height of about 12-24 inches. It works well in herb gardens, mixed borders, and patio containers. If you are planting in the ground, consider using a barrier or planting in a large pot sunk into the bed to help contain its spread.
Harvest often to encourage fresh, tender growth. Snip sprigs as needed for iced tea, desserts, or garnishes, and pinch the tips to promote bushier growth. You can also cut the plant back partway through the season to refresh the foliage and keep it compact.
In USDA Zones 5-9, it is typically hardy and returns each year. Divide clumps when they become crowded, and replant divisions to keep the patch vigorous.