Lemongrass is a tropical plant that thrives in full sun, even in hot Southern locations. It requires rich, well-drained soil and adding composted manure to the soil improves its fertility and enhance its ability to hold water. Tips to grow Lemongrass: 1. Provide a steady supply of moisture for best growth and do not let the roots dry out. 2. If you’re adding several Lemongrass plants to planting beds, space plants 24 inches apart. 3. In colder regions, plant Lemongrass indoors and keep in a bright spot while keeping the soil barely moist.