How to Plant, Grow, Care and Use Lemongrass: Complete Guide

Have you ever dreamed of adding a touch of vibrant flavor to your dishes? You should try Lemongrass! Lemongrass is more than just a fragrant herb—it’s a powerhouse in both the kitchen and the garden. Its bright, citrusy aroma and flavor can transform everything from soups and curries to teas and marinades. It’s a key ingredient in many global cuisines, particularly Southeast Asian dishes.

Plus, it’s easy to grow at home with just a little care and attention. In this article, we’ll explore everything you need to know about planting, growing, and caring for lemongrass. We’ll also explore how to incorporate this versatile herb into your cooking to make the most of your harvest.

What is Lemongrass?

Lemongrass (Cymbopogon citratus) is a tropical plant that belongs to the grass family. It’s known for its strong citrus aroma and flavor, which it gets from essential oils found in its long, slender stalks. Lemongrass is most commonly associated with Asian cuisine—particularly Thai, Vietnamese, and Indian dishes. Plus, it’s also used in herbal teas, as a natural insect repellent, and for medicinal purposes.

Lemongrass grows in clumps of grass-like stalks that can reach up to 3 feet tall, depending on the variety and growing conditions. It’s known for its ability to thrive in warm climates. This makes it ideal for outdoor gardening in many regions. However, with the right care, it can also be successfully grown indoors.

Lemongrass Types and Characteristics

Lemongrass (Cymbopogon) is a genus of tropical grasses native to Asia, Africa, and Australia. While there are over 55 species in the genus, two varieties are most commonly grown for culinary and medicinal purposes:

Common Varieties

1. East Indian Lemongrass (Cymbopogon flexuosus)
   • Also called East Indian or Cochin lemongrass
   • Preferred for commercial oil production
   • More hardy and disease-resistant
   • Slightly more medicinal flavor profile
2. West Indian Lemongrass (Cymbopogon citratus)
   • Most commonly used in cooking
   • Thicker stalks with a bulbous base
   • Sweeter, more delicate flavor
   • Popular choice for home gardeners

Physical Characteristics

Lemongrass is a perennial grass that grows in dense clumps, reaching heights of 2-4 feet (60-120 cm) with a spread of about 3 feet (90 cm). Its most distinctive features include:

• Appearance: Tall, slender, arching leaves that are gray-green in color
• Structure: Fibrous stalks with bulbous, pale bases (the edible portion)
• Scent: Strong citrus aroma (particularly lemon) when leaves or stalks are bruised
• Growth habit: Forms dense, fountain-like clumps that expand outward

Fun fact: Despite its strong lemon scent and flavor, lemongrass is not related to citrus fruits at all! The citrus aroma comes from citral and other essential oils in the plant.

Benefits of Growing Your Own Lemongrass

Growing lemongrass at home offers numerous advantages beyond just having a fresh supply for your kitchen:

Culinary Benefits

• Freshness guarantee: Harvest just what you need, when you need it
• Cost-effective: A single plant can provide dozens of stalks throughout the season
• Superior flavor: Homegrown lemongrass offers more intense flavor than dried alternatives
• No preservatives: Avoid chemicals often used in commercial production

Garden Benefits

• Ornamental value: Attractive, fountain-like growth adds texture and movement to landscapes
• Natural pest control: Repels mosquitoes and other insects naturally
• Companion planting: Helps protect neighboring plants from certain pests
• Low maintenance: Once established, it requires minimal care in suitable climates

Health Benefits

• Medicinal uses: Fresh lemongrass is used in traditional remedies for digestive issues, fever, and pain
• Aromatherapy: Growing your own provides fresh material for homemade essential oils and sachets
• Stress reduction: The act of gardening itself promotes relaxation and mindfulness
• Guaranteed organic: Control exactly what goes into growing your herbs

Getting Started: How to Plant Lemongrass?

Successful lemongrass cultivation begins with understanding its growth requirements and choosing the right planting method for your situation.

Climate and Growth Requirements

Lemongrass is a tropical plant that thrives in warm, humid conditions:

Propagation Methods

Lemongrass can be started in several ways, each with its advantages:

1. From Store-Bought Stalks

This is perhaps the easiest and most economical method:

1. Select fresh stalks with intact bases from the grocery store
2. Trim the tops, leaving about 5-6 inches (12-15 cm) of stalk
3. Place in water, submerging the bottom 1-2 inches
4. Change water every few days until roots develop (usually 2-3 weeks)
5. Transplant to soil once roots are 1-2 inches long

2. From Seeds

While less common, seed propagation is possible:

1. Start indoors 8-10 weeks before the last frost
2. Sow seeds lightly (barely cover) in seed-starting mix
3. Maintain temperature around 70°F (21°C) and high humidity
4. Provide bright light once germinated
5. Transplant when seedlings are 4-6 inches tall and all danger of frost has passed

3. Division of Established Plants

For those who already have lemongrass or know someone who does:

1. Dig up an established clump in spring
2. Separate the clump into smaller sections, each with roots attached
3. Trim back the foliage by about one-third
4. Replant divisions at the same depth they were previously growing

Planting Process

Whether starting with rooted stalks, seedlings, or divisions, the planting process is similar:

1. Choose a location with full sun and good drainage
2. Prepare soil by incorporating compost or well-rotted manure
3. Dig holes twice as wide as the root ball and at the same depth
4. Place plants at the same depth they were previously growing
5. Backfill with soil and firm gently around the base
6. Water thoroughly to eliminate air pockets and help establish roots
7. Mulch around plants (but not against stems) to retain moisture and suppress weeds

Container Planting

For colder climates or limited space, container growing is an excellent option:

1. Select a container at least 12 inches (30 cm) deep and wide with drainage holes
2. Fill with high-quality potting mix, ideally with added compost
3. Plant as described above, leaving 1-2 inches (2.5-5 cm) of space below the rim for watering
4. Place in a sunny location (south-facing window if indoors)
5. Water when the top inch of soil feels dry

🪴 Pro tip: In zones 4-7, container-grown lemongrass can be moved indoors for winter, allowing you to enjoy fresh harvests year-round.

How to Care for Lemongrass?

Once established, lemongrass is relatively low-maintenance, but proper care will ensure the healthiest plants and most abundant harvests.

Watering Requirements

Lemongrass enjoys consistent moisture but doesn’t tolerate waterlogged conditions:

• Established plants: Water deeply when the top 1-2 inches (2.5-5 cm) of soil feels dry
• Container plants: Check more frequently as they dry out faster
• Summer care: Increase watering during hot, dry periods
• Winter care: Reduce watering for dormant plants in the ground; water sparingly for indoor plants

Fertilization Needs

As a grass, lemongrass appreciates regular feeding:

• At planting: Incorporate compost or a balanced organic fertilizer
• During growth: Apply a nitrogen-rich fertilizer monthly during the growing season
• Container plants: Feed with half-strength liquid fertilizer every 2-3 weeks
• Late season: Stop fertilizing about 8 weeks before the first frost in seasonal areas

Pruning and Maintenance

Regular maintenance keeps lemongrass healthy and attractive:

• Spring cleanup: Remove any dead or damaged foliage
• Mid-season trimming: Cut back sprawling leaves to maintain shape
• Fall preparation: In zones 8-11, cut back to 6 inches (15 cm) before winter
• Division: Divide clumps every 2-3 years in spring to prevent overcrowding

Winter Protection

Lemongrass requires special attention in cooler climates:

For Zones 8-11:

• Mulch: Apply 2-3 inches (5-7.5 cm) of mulch around the base for extra protection
• Cutting back: Trim foliage to 6 inches (15 cm) after the first light frost
• Drainage: Ensure winter rain can drain away from the crown

For Zones 4-7:

• Container moving: Bring potted plants indoors before temperatures drop below 40°F (4°C)
• Digging up: Lift garden plants and pot them for indoor growing
• Storage options: Keep as a houseplant in bright light or allow to go dormant in a cool garage (40-50°F/4-10°C)

Common Pests and Problems

While generally resistant to pests, lemongrass can occasionally face challenges:

Harvesting Lemongrass

One of the joys of growing lemongrass is harvesting fresh stalks whenever needed for cooking and other uses.

When to Harvest

Timing is important for the best flavor and plant health:

• First harvest: Wait until plants are at least 12 inches (30 cm) tall with multiple stalks
• Optimal size: Harvest when the base of the stalk is about 1/2 inch (1.25 cm) thick
• Growing season: Harvest throughout summer and fall in warm climates
• Final harvest: Before the first frost in seasonal areas

Harvesting Techniques

Proper harvesting ensures continued production:

• Select mature stalks from the outer portion of the clump
• Cut or twist stalks at ground level or slightly below the soil line
• Alternatively, dig and divide entire clumps, replanting some portions
• For leaves only, cut the top portion without disturbing the base

Post-Harvest Processing

Once harvested, lemongrass can be prepared for immediate use or preserved:

• Cleaning: Remove outer tough layers and trim off the root end and leaf tops
• Fresh storage: Wrap in damp paper towels and refrigerate for up to 2 weeks
• Freezing: Chop and freeze in ice cube trays with water or oil
• Drying: Cut into thin slices and air-dry until brittle, then store in airtight containers

💡 Harvesting tip: For continuous production, never harvest more than one-third of a plant at once, allowing it to regenerate between harvests.

Using Lemongrass: Culinary Applications

The distinctive citrus flavor of lemongrass makes it a versatile ingredient in many cuisines, particularly Southeast Asian.

Cooking with Lemongrass

Lemongrass adds bright, lemony notes without the acidity of actual lemon:

Preparation Methods:

• For soups and broths: Bruise whole stalks to release flavor, then remove before serving
• For curry pastes: Finely mince or pound the tender white portion
• For stir-fries: Slice thinly on a diagonal or chop finely
• For marinades: Crush or blend with other ingredients

Popular Dishes:

• Tom Yum soup: Thai hot and sour soup with lemongrass, lime, and chilies
• Chicken satay: Skewered chicken with lemongrass marinade
• Green curry: Coconut-based curry with lemongrass, galangal, and Thai basil
• Vietnamese beef noodle soup (Phở): Aromatic broth infused with lemongrass and star anise
• Lemongrass chicken: Stir-fried chicken with lemongrass and fish sauce

Simple Lemongrass Marinade Recipe

Perfect for chicken, fish, or tofu

Ingredients:

• 3 stalks lemongrass, tender white parts only, finely minced
• 3 cloves garlic, minced
• 2 tablespoons fish sauce
• 1 tablespoon soy sauce
• 1 tablespoon brown sugar
• 1 tablespoon vegetable oil
• 1 teaspoon black pepper

Instructions:

1. Combine all ingredients in a bowl or blender
2. Marinate protein for at least 30 minutes (preferably 2-4 hours)
3. Grill, bake, or stir-fry as desired

Beverage Applications

Lemongrass creates refreshing and aromatic drinks:

• Lemongrass tea: Steep fresh or dried leaves in hot water for 5-10 minutes
• Lemongrass-ginger infusion: Combine with fresh ginger for a warming drink
• Lemongrass syrup: Simmer chopped lemongrass with equal parts sugar and water
• Cocktails: Use as a garnish or infuse into spirits for tropical drinks
• Refreshers: Add to sparkling water with mint and lime

Medicinal and Therapeutic Uses

Throughout history, lemongrass has been valued for its health-promoting properties.

Traditional Medicinal Uses

Lemongrass has been used in various traditional medicine systems:

• Digestive aid: Soothes stomach discomfort and promotes healthy digestion
• Fever reducer: Used to lower body temperature naturally
• Pain reliever: Applied topically for muscle pain and headaches
• Anxiety treatment: The aroma is used to promote relaxation and reduce stress
• Detoxification: Believed to help cleanse the body, particularly the kidneys, bladder, and liver

Modern Applications

Contemporary research has validated many traditional uses and discovered new benefits:

• Antimicrobial properties: Studies show effectiveness against certain bacteria and fungi
• Anti-inflammatory effects: May help reduce inflammation when consumed regularly
• Antioxidant activity: Contains compounds that help fight free radicals
• Cholesterol management: Some research suggests it may help maintain healthy cholesterol levels
• Blood pressure regulation: May contribute to cardiovascular health

Aromatherapy and Essential Oil

Lemongrass essential oil is widely used in aromatherapy:

• Diffusion: Add a few drops to a diffuser to freshen the air and reduce stress
• Massage: Dilute with carrier oil for muscle-soothing massage
• Steam inhalation: Add to hot water and inhale the steam for respiratory benefits
• Bath addition: Mix a few drops with Epsom salts for a relaxing bath
• Room spray: Combine with water in a spray bottle for a natural air freshener

⚠️ Important note: Always consult a healthcare professional before using lemongrass medicinally, especially if pregnant, nursing, or taking medications. Essential oils should always be properly diluted before skin application.

Other Practical Uses

Beyond cooking and medicine, lemongrass offers several practical applications around the home and garden.

Natural Insect Repellent

Lemongrass contains citronella, a natural insect deterrent:

• Growing plants: Place potted lemongrass on patios and outdoor living areas
• Crushed leaves: Rub on skin (after patch testing) to repel mosquitoes
• Dried bundles: Hang in closets to deter moths
• Garden placement: Plant around seating areas to reduce insect presence

Home Fragrance and Cleaning

The fresh scent makes lemongrass excellent for home care:

• Potpourri: Dry leaves and combine with other herbs for a natural fragrance
• Homemade cleaners: Infuse in vinegar for an all-purpose cleaning solution
• Linen sachets: Place dried lemongrass in drawers and linen closets
• Carpet freshener: Mix dried, ground lemongrass with baking soda

Crafts and Body Care

Creative uses extend to personal care and crafting:

• Soap making: Add chopped lemongrass or essential oil to homemade soaps
• Bath products: Incorporate into bath bombs, salts, and scrubs
• Candles: Use as a natural fragrance in homemade candles
• Facial steam: Add fresh leaves to hot water for a refreshing facial treatment

Lemongrass in Garden Design

With its architectural form and practical benefits, lemongrass makes an excellent addition to various garden styles.

Landscape Uses

Incorporate lemongrass as both a functional and ornamental element:

• Herb gardens: Plant alongside other culinary herbs for convenient harvesting
• Border plantings: Use as a mid-height border with ornamental grasses
• Container gardens: Combine with trailing flowers for contrast in texture
• Tropical landscapes: Include bananas, cannas, and other tropical plants
• Rain gardens: Plant in areas that receive periodic heavy water

Companion Planting

Lemongrass works well with certain plants and helps protect others:

Good companions:

• Eggplant
• Tomatoes
• Peppers
• Marigolds
• Basil

Plants that benefit from lemongrass’s pest-repelling properties:

• Roses (helps deter aphids)
• Vegetable gardens (reduce various insect pests)
• Fruit trees (may help deter some fruit flies)

Ornamental Value

Beyond its practical uses, lemongrass adds aesthetic appeal:

• Texture: Provides fine, arching texture that contrasts with broader leaves
• Movement: Catches the slightest breeze, adding motion to the garden
• Color: Bright green foliage lightens darker areas of the landscape
• Structure: Maintains its form throughout the growing season
• Winter interest: Even dried foliage can provide visual appeal in mild climates

Troubleshooting Common Issues

Even with proper care, lemongrass growers may encounter challenges. Here’s how to address them:

Growth Problems

Harvesting and Flavor Issues

Seasonal Challenges

FAQ

1. How long does it take lemongrass to grow from planting to harvest?

From rooted stalks or divisions, you can typically harvest within 3-4 months. From seeds, expect 4-6 months before the first harvest.

2. Can lemongrass be grown indoors year-round?

Yes, with sufficient light (a south-facing window or grow lights), proper watering, and occasional fertilizing. Growth may slow during the winter months.

3. How much space does lemongrass need?

Mature plants need 24-36 inches (60-90 cm) of space in all directions. In containers, provide at least 12 inches (30 cm) in diameter per plant.

4. Is lemongrass invasive?

In tropical climates, it can spread vigorously but is not typically considered invasive. In cooler regions, its spread is naturally limited by winter temperatures.

5. What parts of lemongrass are edible?

The tender, white bulbous base is used in cooking. The tougher leaves can be used for tea and infusions, but are generally too fibrous to eat.

6. How do I know when my lemongrass is ready to harvest?

Harvest when plants are at least 12 inches tall and stalks are about 1/2 inch thick at the base, typically 3-4 months after planting.

7. Can I eat lemongrass raw?

The tender white portion can be very finely minced and eaten raw in salads, but it’s more commonly cooked to soften its fibers and release flavor.