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Lemongrass is a tropical herb packed with strong citrus flavor. The lemon taste is prized in Asian cooking, as well as in teas, sauces, and soups. In the garden, lemongrass forms a tall, grassy clump 3 to 5 feet tall. Its appearance rivals that of many ornamental grasses and can easily fulfill a similar role in the landscape.
Few pests bother lemongrass. This herb is actually sometimes used in concoctions to repel insects. Occasionally, though, spider mites will attack plants overwintering indoors. As lemongrass grows, it forms a tight clump that’s difficult to dig into. Use a sharp spade or hatchet to remove roots in early spring. Slice it like a pie, then pry slices of roots free. Keep an eye on plants in pots. With sufficient water, roots can quickly fill a too-small pot and burst it.
Lemongrass thrives in full sun, even in hot Southern locations. Give this herb rich, well-drained soil. Amend planting holes with composted manure to improve fertility and enhance the soil’s ability to hold water. If you’re adding several lemongrass plants to planting beds, space plants 24 inches apart. Provide a steady supply of moisture for best growth don’t let lemongrass roots dry out. Fertilize plants during the growing season every couple of weeks with a liquid plant food. Plant lemongrass in a large pot that is at least 12 inches across, or use a 5-gallon bucket. Be sure to use a premium quality potting soil when growing lemongrass. Lemongrass grows tall, and pots can easily tip in windy weather, so place containers in a slightly protected location.