Herb · Growing guide

Lemongrass

Cymbopogon citratus · Grass family

Lemongrass is a grass herb grown for tea herb, container, and aromatic. Use this guide to match its light, water, soil, space, seasonal care, and safety needs.

Botanical field illustration of Lemongrass
Identity-specific botanical field illustration
Reliable light
Full sun
Water pattern
Consistent
Mature size
48 × 36 in
Final spacing
30 in
Season
warm

Plant identity, types & settings

One plant guide. Clear details underneath.

Lemongrass is the plant identity. Container, landscape, cutting, indoor, hydroponic, and harvest labels describe ways to grow it; they are not additional plant or cultivar names.

Ways to grow it

These are garden or production settings—not cultivar names and not extra plants.

Growing context

Garden Crop

Keep harvest access open and label the species and intended plant part; culinary, aromatic, and dye uses are not interchangeable.

Mature size
38 × 23 in
Spacing
23 in
Container
10+ gal · 15+ in deep
Use this setup in the planner →
Growing context

Indoor Hydroponic Crop

Select compact seed stock, provide active light, and sanitize the recirculating system between crops.

Mature size
29 × 17 in
Spacing
12 in
Container
5+ gal · 15+ in deep
Use this setup in the planner →

01 · Light & site

Give it the light its growth depends on.

Full sun, with roughly 6 to 8 hours of useful light. Warm soil and frost-free conditions

02 · Water & soil

Keep roots supplied without trapping water.

Keep the active root zone evenly moist while preserving drainage.

Soil
Loose, moderately fertile garden soil
Drainage
Moist but drained
pH
Species-dependent, commonly mildly acidic to neutral

03 · Spacing & roots

Make room for the mature plant.

Space plants about 30 inches apart. Expect a mature plant around 48 inches tall by 36 inches wide.

A branching root system needs the stated depth plus aerated soil around the mature spread.

04 · Start

Begin with the method that protects establishment.

Direct sow or transplant according to crop-specific temperature and root-disturbance guidance.

05 · Care

Support healthy growth through the season.

Support is usually unnecessary. Self-supporting clump; allow room for arching blades.

Upkeep
Low
Feeding
Low
Watch for
Spider mites, Rust, Cold injury

06 · Flower or harvest

Harvest and flowering

90 to 120 days. Harvest only correctly identified plant parts with an established culinary use. Let some stems flower when pollinator value is part of the goal.

07 · Safety

Know the cautions before you place or use it.

  • Leaf edges can be sharp; place away from narrow paths.
  • Overwinter indoors only with enough light and space.

08 · Sources

Check the evidence behind the guide.

University of Minnesota Extension: Growing herbs in home gardensHerb light, spacing, establishment, harvest, and container guidanceOpen source ↗University of Minnesota Extension: Companion planting in home gardensEvidence-aware interplanting, succession, biodiversity, and trap-crop contextOpen source ↗USDA National Institute of Food and Agriculture: Cooperative ExtensionNational extension framework and local verification pathwayOpen source ↗

Guide record: July 20, 2026. Region, cultivar, regulations, and current product labels can change the right decision.

Working checklist

Lemongrass planting check