Select a fresh lemongrass stalk from an Asian grocery or food coop. Check that the cut end has leaves wrapping together at the base, with no visible concentric rings.

Peel off any dried-out outer layers and trim the leafy top to about 6-8 inches.

Stand the stalk in a glass jar with about 1 inch of water at the bottom. Place in a warm, bright spot.

Change the water every 2-3 days. After 2-4 weeks, white roots will develop and new green shoots will emerge from the center of the stalk.

When roots are 1-2 inches long, transplant into a 6-8 inch pot of well-draining potting soil. Water thoroughly.

Place in your sunniest window (south-facing ideal) for at least 6 hours of direct sun per day, or use a grow light. Keep indoor temperatures above 60°F.

Water when the top inch of soil feels dry. Feed with diluted liquid fertilizer every 2 weeks during the growing season.

First stalks ready to harvest at base diameter of 1/2 inch or larger, usually 4-6 months after planting. Cut just below the soil line.