When to plant
Tropical perennial (zones 9–11). Plant in spring after last frost. In zones 4–8, grow in large containers and bring indoors before frost — it can live for many years as a houseplant in a sunny spot. Grows very quickly in summer heat. Divide clumps every 2–3 years to rejuvenate.
Soil & site
Rich, well-drained soil with good moisture retention. pH 6.0–7.0. Work in compost generously. In cooler climates, plant in full sun in a warm, sheltered spot. Grows well in large containers that can be brought indoors for winter in cold climates.
Feeding
Moderate to heavy feeder, especially in containers. Apply a balanced fertilizer monthly during the growing season. A nitrogen-rich fertilizer encourages rapid leafy growth. Stop fertilizing in late summer in cold climates to harden plants before bringing them indoors.
Common problems
Rust disease (orange spots on leaves). Spider mites when grown indoors. Aphids on new growth. Relatively trouble-free in appropriate climates. The main challenge in cooler climates is overwintering — plants must be brought inside before frost.
When to harvest
Individual stalks are ready when about 1/2 inch in diameter and at least 12 inches tall. The entire clump is usually harvested by taking outer stalks. The white bulb base — the tender, most flavorful part — should be plump and firm. The outer leaves (blades) are always ready for culinary use when green.
How to harvest
Grasp a stalk at the base and twist-pull to separate it from the clump, or cut with a sharp knife at soil level. Remove the tough outer layers to reveal the pale, tender interior of the bulb — this is the part used in cooking. The leaves can be cut and used in teas and infusions.
Storage & use
Fresh stalks: refrigerate in a bag for 2–3 weeks, or place the cut end in a glass of water. Freeze: trim, chop, and freeze in zip-lock bags. Dry: slice thinly and dehydrate at 95 degrees F. Stalks used in Thai, Vietnamese, and other Southeast Asian cuisines. Leaves make a pleasant lemon-flavored tea.
Useful for growing lemongrass
A few things that make this one easier — chosen for this plant, not a generic list.
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