Lemongrass Lawn – Transforming Your Backyard Into A Fragrant Lawn
A lemongrass lawn is a sustainable, low-maintenance alternative to traditional turfgrass that uses Cymbopogon species to create a lush, aromatic landscape. While it is not a “walk-on” surface like clover or fescue, it excels as a privacy screen, erosion control measure, and natural mosquito repellent.
To succeed, plant lemongrass in full sun with well-draining soil, provide high-nitrogen fertilizer during the growing season, and prune heavily in late winter to encourage fresh, vibrant growth.
Do you feel like you are constantly fighting a losing battle against lawn weeds and high water bills? Most homeowners find that maintaining a traditional lemongrass lawn or turfgrass area requires an exhausting amount of chemicals and time.
Imagine replacing those high-maintenance patches with a fragrant, swaying sea of green that naturally keeps mosquitoes away. You can achieve a stunning, functional landscape that provides culinary harvests while demanding far less water than a standard lawn.
In this guide, I will show you how to design, plant, and maintain a lemongrass landscape from the ground up. We will cover everything from soil pH and NPK ratios to winter protection and safety tips for your pets and family.
Understanding the Lemongrass Lawn Concept
When we talk about a lemongrass lawn, we are moving away from the idea of a flat, mowed surface. Lemongrass is a perennial bunchgrass that grows in thick, upright clumps rather than spreading via underground runners like Bermuda grass.
In a landscaping context, this means using lemongrass as a mass planting or a “no-mow” border. It creates a soft, textured look that moves beautifully in the wind and releases a light citrus scent whenever the leaves are brushed.
This approach works best for areas of your yard where you want visual interest but don’t need to play sports or host heavy foot traffic. It is a favorite for xeriscaping and tropical-themed gardens where water conservation is a priority.
The Benefits of a Lemongrass Lawn
One of the primary reasons gardeners choose a lemongrass lawn is its incredible ability to repel unwanted insects. The plant contains citronella oil, which naturally masks the scents that attract mosquitoes and gnats to your patio.
Beyond pest control, these plants are highly effective at preventing soil erosion. Their dense, fibrous root systems bind the earth together, making them perfect for sloped areas where traditional grass often fails to take hold.
From a maintenance perspective, you will save hundreds of gallons of water annually. Once established, lemongrass is remarkably drought-tolerant, requiring only deep watering during extreme heat waves rather than the daily sprinkling required by fescue.
Natural Pest Deterrent
The essential oils found in the leaves act as a biological barrier. While it won’t eliminate every bug, a thick perimeter of lemongrass significantly reduces the local mosquito population without the need for synthetic sprays.
Culinary and Medicinal Value
Unlike a standard lawn, your landscape becomes a pantry. You can harvest the tender inner stalks for Thai curries or dry the leaves for a calming, antioxidant-rich herbal tea throughout the summer months.
Low Chemical Dependency
Lemongrass is naturally resistant to most common lawn diseases and pests. This means you can put away the fungicides and pesticides, creating a safer environment for local pollinators like bees and butterflies.
Choosing the Right Cultivar for Your Yard
Not all lemongrass is created equal, and choosing the wrong variety can impact your results. There are two main types you will encounter at the nursery: West Indian and East Indian.
Cymbopogon citratus, or West Indian lemongrass, is the preferred choice for most homeowners. It forms neat, manageable clumps and is the variety most commonly used in cooking due to its bulbous, flavorful base.
Cymbopogon flexuosus, or East Indian lemongrass, grows taller and is more “wispy” in appearance. It is primarily grown for essential oil production and can reach heights of six feet, making it better for privacy screens than ground cover.
If you want a more uniform, “lawn-like” appearance, stick with the West Indian variety. It stays slightly shorter and creates a denser mat of foliage that looks intentional and manicured when planted in groups.
Planting and Establishing Your Fragrant Landscape
Timing is everything when establishing your lemongrass lawn. Since this is a tropical plant, you must wait until the soil temperature consistently stays above 60°F (15°C) before putting it in the ground.
Start by testing your soil; lemongrass thrives in a slightly acidic to neutral pH between 6.5 and 7.0. If your soil is heavy clay, mix in plenty of organic compost or aged manure to improve drainage and aeration.
Space your plants about 24 inches apart. While this may look sparse initially, the clumps will grow rapidly and fill in the gaps within a single growing season, creating a seamless wall of green.
Step-by-Step Planting Guide
- Clear the Area: Remove all existing turf and weeds to prevent competition for nutrients.
- Dig the Holes: Make each hole twice as wide as the root ball and just as deep.
- Amend the Soil: Mix a handful of bone meal into the bottom of the hole to encourage strong root development.
- Set the Plant: Place the lemongrass in the hole, ensuring the crown is level with the soil surface.
- Water In: Saturate the area immediately to collapse air pockets and settle the roots.
Essential Care and Maintenance
Maintaining a lemongrass lawn is straightforward, but it does require a few specific tasks to keep it looking its best. Unlike turfgrass, you will never need a lawnmower, but you will need a good pair of bypass pruners.
Feeding is the most important part of the process. Lemongrass is a “heavy feeder” and requires high levels of nitrogen to produce its signature long, green blades. Look for a fertilizer with an NPK ratio like 10-10-10 or even a nitrogen-rich 21-0-0.
Apply fertilizer once every six weeks during the peak growing season. Always water the ground thoroughly after fertilizing to help the nutrients reach the root zone and prevent “burning” the delicate stalks.
Watering Requirements
During the first month, keep the soil consistently moist but not soggy. Once the roots are deep, switch to a deep-soak method once a week, providing about an inch of water at a time to encourage deeper root growth.
Pruning and Cleaning
In late winter or early spring, your lemongrass will likely look brown and dormant. Use sharp shears to cut the entire plant back to about 6 inches above the ground. This “hard prune” triggers a massive flush of new, bright green growth.
Mulching for Health
Apply a 3-inch layer of wood chips or straw around the base of the plants. This helps retain moisture, suppresses weeds, and adds organic matter back into the soil as it decomposes over time.
Overwintering and Seasonal Troubleshooting
If you live in USDA zones 9 through 11, your lemongrass will likely survive the winter outdoors. However, for those in colder climates, you must treat your landscape as an annual or take steps to protect it.
For a lemongrass lawn in the north, many gardeners choose to dig up a few “mother clumps” in autumn. Pot them up and keep them in a sunny window or a heated garage until the danger of frost has passed in the spring.
Common issues include “rust fungus,” which appears as small orange spots on the leaves. This is usually caused by overhead watering. To fix it, only water at the base of the plant and ensure there is plenty of airflow between clumps.
Dealing With Frost
If a surprise frost is predicted, cover your plants with a breathable burlap sack or a frost blanket. Avoid using plastic, as it can trap moisture against the leaves and cause even more damage when the sun hits it.
Division and Propagation
Every two to three years, your clumps may become overcrowded. Dig them up in the spring and use a sharp spade to slice the root ball into sections. Replant these sections to expand your lawn for free!
Safety and Tool Handling
Expert gardeners know that lemongrass has a secret: the leaf edges are incredibly sharp. They contain microscopic silica crystals that can cause painful “paper cuts” on bare skin during maintenance.
Always wear long sleeves and heavy-duty gardening gloves when pruning or harvesting. If you have children or pets, consider planting the lemongrass in areas where they won’t accidentally brush against the sharp foliage during play.
Regarding pet safety, lemongrass is generally safe in its plant form, but the concentrated essential oil can be toxic to cats and dogs. Ensure your pets don’t make a habit of chewing on the stalks in large quantities.
Tool Recommendations
- Bypass Pruners: Essential for clean cuts on thick stalks.
- Garden Spade: Needed for dividing large, established clumps.
- Soil Moisture Meter: Helps you avoid overwatering in the early stages.
- Safety Glasses: Protects your eyes from swaying blades during a hard prune.
Frequently Asked Questions
Can I Walk on a Lemongrass Lawn?
No, you cannot walk directly on lemongrass like you would on a traditional grass lawn. The stalks are thick and upright, and the leaves are sharp. It is best used as a border or a visual landscape element with designated walking paths.
How Fast Does Lemongrass Grow?
In the heat of summer, lemongrass is an incredibly fast grower. A small starter plant can reach three feet in height and two feet in width within just 3 to 4 months if provided with enough nitrogen and water.
Does Lemongrass Really Keep Mosquitoes Away?
Yes, but with a caveat. The living plant provides a localized repellent effect. For maximum protection, you can crush a few leaves to release the oils, or plant a dense “wall” of lemongrass around your seating area.
Will Lemongrass Survive a Freeze?
The roots can sometimes survive a light freeze if they are heavily mulched, but the foliage will die back at 32°F. In zones 8 and lower, it is safest to bring divisions indoors for the winter months.
Conclusion
Switching to a lemongrass lawn or incorporating it into your landscape is a brilliant move for the eco-conscious gardener. It offers a unique combination of beauty, utility, and resilience that traditional turf simply cannot match.
By following the steps outlined above—focusing on high-nitrogen feeding, proper spacing, and safety-first pruning—you can create a backyard that smells like a spa and stays free of pests. Start small with a few clumps this spring and watch how quickly your landscape transforms.
Take the first step today by testing your soil pH and ordering your West Indian lemongrass starts. Your future, mosquito-free self will thank you for the effort!
Taylor pairs an engineer's eye with years of hands-on work in soil, lawns and outdoor machinery. He tests ideas in his own garden, keeps tractors and mowers running himself, and speaks to local horticulture groups. Every Garden Aider guide is written to be practical, accurate and safe to follow.
“To bring life alive, you just need to mix some love with the compost, bedding, and gardening machines.”