Lemon balm is easy to grow from seed, rooted cuttings, or by root division. It prefers light soil, but will adapt if some amendments are worked into heavier clay soils; soil should also be fairly fertile and well balanced. Balm thrives in full sun but can be grown in partially shaded areas. (The cultivars ‘All Gold’ and ‘Aurea’ have variegated and yellow foliage, and need some shade since the full hot sun tends to burn them.)
A member of the mint family, balm looks and grows much like mint, though it does not send runners. It will compete for space and is best planted next to other vigorous perennials that will hold their own against this sweet, yet invasive herb. Balm grows from 2 to 2-1/2 feet tall, bushing out laterally, so give each plant 2 feet all around.
Trim plants to help maintain their handsome bushy appearance. The hardy root system will survive the coldest winters if the plants are well mulched.
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