How-to Guide
How to Grow Lemongrass
The short answer
Lemongrass is a tender tropical grass that wants warmth, full sun, rich well-drained soil, and steady moisture. It is perennial only in about USDA zone 9 and warmer; in colder zones grow it as an annual or overwinter it indoors. You can start it easily by rooting a fresh grocery stalk in water.
Water and feed regularly through the warm months to build a big clump. Harvest once stalks are about a foot tall with bases at least half an inch thick, cutting stalks at ground level or twisting off outer stalks. In cold regions, lift and pot plants in early autumn to carry them through winter.
Planting and care
Plant out after frost danger passes into rich, well-drained soil in full sun. Keep the top inch of soil from drying out during active growth.
- 1Start a plant — Root a fresh stalk in water for about a month, or set out a potted plant after the soil warms.
- 2Water and feed — Provide consistent moisture and regular feeding through the warm season for a full clump.
- 3Overwinter — In zone 8 and colder, lift and pot plants in early autumn and keep them just moist indoors above about 45°F.
Harvesting
Begin harvesting when stalks reach about 12 inches tall and bases are at least half an inch thick. Cut at ground level or push an outer stalk aside, twist and pull. Healthy plants keep producing for years in frost-free climates.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Utah State University Extension — Lemongrass in the Garden — Lemongrass needs warmth, full sun, rich moist well-drained soil; perennial in zone 9+, overwinter indoors in colder zones.
- Illinois Extension — Lemon Grass — Lemongrass is a tender warm-season grass grown for its stalks and leaves; culture and harvest guidance.