Growing lemon balm is a warm weather activity. After all danger of frost has past, set lemon balm plants 20 to 24 inches apart in rich soil where it will receive some shade during the day. Lemon balm will remain green during mild winters, such as those in zones 9 and 10. This plant responds well to cutting, growing back twice as thick. Whenever your plant is looking tired due to drought, hail, insects, or other stress, just cut it back and let it rejuvenate itself with fresh, new growth. Lemon balm likes rich, moist, but well-drained soil with a pH of 6 to 7. Because most people harvest it continually for lots of leaves, lemon balm needs a little fertilizer. When planting, add a coated, slow-release fertilizer such as 19-19-19 at the rate recommended on the label, or work plenty of organic nutrients from compost, blood meal, or cottonseed meal into the soil.
Lemon Balm Cultivation and Growing Methods
Lemon balm can grow in most types of soil, but well-drained clay or sandy loam is best. Lemon balm can also handle acidic and very alkaline soil, but it prefers a pH range of 6.0 to 7.5.
Thrives best in full sun to partial shade.
12 to 18 inches (30 - 45cm).
Space seedlings around 12 to 15 inches (30 and 38 cm) apart.
Plant seedlings indoors in early spring, (6-8 weeks before last frost), or sow seeds on the surface of soil after the last frost of spring. Does best in pots in summer.
Seed germination occurs within 12 to 21 days.
Leaves can be harvested in late spring, summer and even autumn. It takes about 10 weeks to go from seeds to full-leafed plants.
Pick individual leaves, or bunches. If you have picked branches/bunches of them, tie them in bunches and hang them in a cool, dry location.
PRESERVATION / PACKAGING METHODS:
Dried leaves may be stored in an airtight glass container for up to one year.
Sown in groups that need the same soil conditions
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