Growing Lemongrass: A Complete Beginner's Guide

Introduction to Growing Lemongrass

Lemongrass (Cymbopogon citratus) is a fragrant tropical grass prized for its distinctive citrus flavor and aroma. Native to Southeast Asia, this tall, clumping grass has been cultivated for over 2,000 years and is essential to Thai, Vietnamese, and other Asian cuisines.

The plant gets its name from the fresh, lemony scent of its stalks and leaves, which comes from high concentrations of citral—the same compound found in lemon peel. Beyond cooking, lemongrass is valued for making tea, essential oils, and as a natural insect repellent.

Why Grow Lemongrass?

Growing your own lemongrass offers numerous benefits:

• Fresh culinary flavor: Essential for authentic Asian cooking
• Aromatic tea: Leaves make delicious, calming herbal tea
• Natural mosquito repellent: The citral scent deters insects
• Low maintenance: Thrives with minimal care in warm conditions
• Beautiful ornamental: Graceful fountain-like growth habit
• Easy propagation: Start new plants from grocery store stalks
• Continuous harvest: Cut and come again for months
• Health benefits: Traditional medicinal uses for digestion

Understanding Lemongrass Types

Two main species are commonly grown:

West Indian Lemongrass (Cymbopogon citratus)

East Indian Lemongrass (Cymbopogon flexuosus)

Pro Tip: For cooking, choose West Indian lemongrass (C. citratus)—the stalks are thicker and more tender. You can often start plants from stalks bought at Asian grocery stores!

What You'll Need

Essential Supplies

• Lemongrass stalks or plants
• Rich, well-draining soil
• Sunny location (6-8 hours of direct sunlight)
• Container (at least 12 inches wide and deep)
• Regular watering setup

Optional but Helpful

• Compost or organic fertilizer
• Mulch
• Frost protection (in cooler zones)
• Sharp knife or pruning shears

Step-by-Step Growing Guide

Step 1: Obtain Your Lemongrass

Option 1: From grocery store stalks

1. Buy fresh lemongrass stalks with intact bases
2. Look for firm stalks with some root nubs visible
3. Trim tops to about 4-6 inches
4. Place in a glass of water in a sunny window
5. Change water every few days
6. Roots develop in 1-3 weeks
7. Plant when roots are 1-2 inches long

Option 2: From nursery plants

1. Purchase established plants in spring
2. Transplant after last frost danger
3. Provides a head start on the growing season

Option 3: From division

1. Divide established clumps in spring
2. Each division needs roots attached
3. Replant immediately

Step 2: Choose the Right Time to Plant

Lemongrass is a tropical plant that needs warmth:

Temperature requirements:

Step 3: Select the Growing Location

Lemongrass needs:

• Light: Full sun (6-8 hours daily)
• Heat: Warm location, protected from cold winds
• Space: Plants spread 2-3 feet wide

Key Point: In cooler zones, grow in containers so you can bring plants indoors before frost.

Step 4: Prepare the Soil

Lemongrass prefers rich, moist soil:

• pH level: 6.0 to 7.5 (slightly acidic to neutral)
• Texture: Rich, loamy, well-draining
• Fertility: High nitrogen content preferred

Soil preparation:

Important: Lemongrass does NOT tolerate clay soil or waterlogging. Use containers if your garden has heavy soil.

Step 5: Planting Your Lemongrass

In-ground planting:

1. Dig hole twice the width of root ball
2. Add compost to planting area
3. Plant at same depth as nursery pot
4. Space plants 24-36 inches apart
5. Water thoroughly after planting
6. Mulch to retain moisture

Container planting:

1. Use pot at least 12 inches wide and deep
2. Ensure drainage holes
3. Fill with rich potting mix
4. Plant one stalk/division per pot
5. Water until it drains from bottom
6. Place in full sun

Step 6: Watering Your Lemongrass

Lemongrass is a thirsty plant:

• Young plants: Keep soil consistently moist
• Established plants: Water regularly (1-2 inches per week)
• Containers: May need daily watering in hot weather
• Never let soil dry out completely

Watering schedule:

Step 7: Feeding Your Lemongrass

Lemongrass is a heavy feeder:

• At planting: Work compost into soil
• Growing season: Monthly feeding with balanced fertilizer
• Nitrogen: Important for leaf growth
• Container plants: Liquid fertilizer every 2-3 weeks

Basic Maintenance

Regular tasks:

• Water consistently
• Fertilize monthly during growing season
• Remove dead or yellowing leaves
• Watch for pests (rare but possible)

For perennial growing (zones 9-11):

• Cut back in late winter
• Divide every 2-3 years
• Mulch to protect roots

For annual/container growing (zones 3-8):

• Bring indoors before frost
• Reduce watering in winter
• Place near sunny window
• Resume feeding in spring

Common Problems and Solutions

Yellowing Leaves

• Cause: Nutrient deficiency or overwatering
• Solution: Check drainage; feed with nitrogen-rich fertilizer

Brown Leaf Tips

• Cause: Dry air, underwatering, or cold damage
• Solution: Increase humidity, water more, protect from cold

Slow Growth

• Cause: Too cold, insufficient light, or poor soil
• Solution: Move to warmer, sunnier spot; improve soil

No Root Development (water propagation)

• Cause: Old stalks or insufficient light
• Solution: Use fresh stalks; place in brighter window

Rust Disease

• Cause: Fungal infection (orange-brown pustules)
• Solution: Remove affected leaves; improve air circulation

Harvesting Your Lemongrass

When to Harvest

• First harvest: When plants are 12 inches tall (about 4-6 months)
• Stalk size: At least 1/2 inch thick
• Best time: Morning, after dew dries
• Season: Throughout growing season

How to Harvest

For stalks (cooking):

1. Choose outer stalks (they mature first)
2. Cut or twist off at base, close to ground
3. Peel off tough outer layers
4. Use bottom 4-6 inches for cooking
5. Don't harvest more than 1/3 of plant at once

For leaves (tea):

1. Cut leaves from any part of plant
2. Use fresh or dry for later use
3. Leaves can be harvested more frequently

Storing Fresh Lemongrass

Using Your Lemongrass

For cooking:

• Use bottom 4-6 inches of stalk
• Remove tough outer layers
• Slice thin, mince, or bruise to release flavor
• Essential for curries, soups, stir-fries

For tea:

1. Cut 2-3 stalks into 2-inch pieces
2. Bruise slightly with knife
3. Steep in hot water for 5-10 minutes
4. Add honey if desired

Quick Reference Table

Troubleshooting Guide

Conclusion

Lemongrass is one of the most rewarding herbs to grow for anyone who loves Asian cooking. With its tropical nature, it thrives on warmth, water, and sunshine—give it these, and you'll have a continuous supply of this fragrant, flavorful herb.

Start with fresh stalks from the grocery store, root them in water, and plant in a sunny spot with rich soil. In just a few months, you'll be harvesting your own lemongrass for authentic Thai curries, Vietnamese pho, and refreshing herbal tea.

Ready to level up? Check out our Intermediate Guide for information on propagation, overwintering strategies, and culinary techniques.