Is Citronella Grass Safe For Dogs – Essential Backyard Safety
The short answer is that true citronella grass (Cymbopogon nardus) is generally non-toxic to dogs in small amounts, but it can cause gastrointestinal upset if ingested in large quantities. However, the “citronella plant” (a scented geranium) is often confused with the grass and contains essential oils that are toxic to pets.
To keep your pets safe, always confirm the botanical name of your plants and prevent your dog from grazing on the long, sharp blades of the grass, which can cause physical irritation or blockages.
Keeping your backyard free of mosquitoes is a top priority for any homeowner who enjoys spending summer evenings outdoors with their furry companions. You want a natural solution that works without relying on heavy chemical sprays that might linger on the paws of your pets.
This guide clarifies the common confusion surrounding mosquito-repelling plants and answers the critical question: is citronella grass safe for dogs? We will explore the botanical differences between look-alike species and provide actionable landscaping tips to keep your yard both beautiful and pet-friendly.
You will learn how to identify true citronella, recognize symptoms of plant-related distress, and discover the best ways to integrate these perennials into your garden design safely. By the end of this article, you will have a clear plan for a pest-free, dog-safe sanctuary.
Understanding the Difference: Grass vs. Geranium
Before we dive into safety, we must clear up a massive piece of botanical confusion that leads to many vet visits. Many garden centers sell a plant labeled as “Citronella Plant” or “Mosquito Plant,” which is actually a scented geranium (Pelargonium graveolens).
This geranium has lace-like, fuzzy leaves and smells like citrus, but it is not a grass. More importantly, it contains geraniol and linalool, which are toxic to dogs. Ingesting this plant can lead to skin irritation, lethargy, and vomiting.
True citronella grass, or Cymbopogon nardus, is a tall, clumping ornamental grass that looks similar to lemongrass. It can grow up to six feet tall and has long, narrow blades. When we ask is citronella grass safe for dogs, we are specifically referring to this grassy variety.
Identifying Cymbopogon Nardus
Look for a clumping habit with stems that often show a reddish tint at the base. The leaves are smooth and can be quite sharp, which is a physical hazard for curious pups. Unlike the geranium, this grass belongs to the same family as many common lawn grasses but contains higher concentrations of essential oils.
If you find a plant with woody stems and flowering blooms, it is not the grass. Always check the nursery tag for the Latin name to ensure you are bringing the right specimen home to your landscape.
Everything You Need to Know: Is Citronella Grass Safe for Dogs?
When determining is citronella grass safe for dogs, we have to look at both chemical toxicity and physical safety. The ASPCA lists true citronella grass as non-toxic in its raw form, but that does not mean it is entirely harmless if your dog decides to make a meal of it.
Dogs are opportunistic eaters and occasionally graze on grass to settle their stomachs or out of boredom. While a few nibbles of Cymbopogon won’t usually cause a crisis, the essential oils concentrated within the blades can irritate the lining of the stomach and intestines.
Large amounts of the plant can lead to digestive obstruction. Because the blades are fibrous and tough, they do not break down easily in a dog’s digestive tract. This can lead to a “bezoar” or a mass of undigested material that requires veterinary intervention.
The Danger of Concentrated Oils
The safety profile changes drastically when you move from the plant to concentrated citronella oil. Never apply pure citronella oil to your dog’s skin or fur. These oils are highly concentrated and can cause severe dermal reactions or toxicity if licked off.
If you use citronella candles or torches in your garden, keep them out of reach. A dog knocking over a torch and getting oil on their coat is a much bigger emergency than a dog chewing on a leaf of the grass itself.
Symptoms to Watch for After Ingestion
Even if you take every precaution, a curious puppy might still find their way into your ornamental beds. Knowing the signs of distress allows you to act quickly. Most reactions to the grass are mild, but they still require monitoring.
The most common symptom is gastrointestinal upset. You might notice your dog drooling excessively shortly after chewing on the plant. This is often followed by vomiting or a loss of appetite as the stomach reacts to the oils and the fibrous texture of the blades.
In some cases, dogs may experience photosensitivity or skin rashes if they rub against the grass frequently. This is particularly common in breeds with thin hair or light skin. If your dog seems itchy or develops red patches after playing near your citronella, it might be time to relocate the plant.
- Excessive Drooling: A sign of oral irritation or nausea.
- Vomiting: The body’s way of rejecting the fibrous plant material.
- Diarrhea: Often occurs several hours after ingestion.
- Lethargy: A sign that the dog’s system is working hard to process the plant.
How to Grow Citronella Grass Safely in a Pet-Friendly Yard
You can still enjoy the benefits of this plant if you use strategic gardening techniques. Since we know is citronella grass safe for dogs mostly depends on the quantity consumed, the goal is to limit access while maximizing the plant’s growth.
Start by choosing the right location. Citronella grass thrives in full sun and well-draining soil. It is a heavy feeder, so you should prepare the soil with a balanced 10-10-10 NPK fertilizer before planting. Ensure the fertilizer is worked into the soil so your dog doesn’t try to eat the granules.
Consider using raised planters or heavy ceramic pots. Elevating the grass keeps it out of “sniffing range” for smaller dogs and makes it much harder for larger dogs to graze. Large pots also allow you to move the plants around your patio to where you need the most protection.
Soil Health and Mulching
When planting in the ground, use a natural hardwood mulch around the base. Avoid cocoa hull mulch at all costs, as it contains theobromine and is highly toxic to dogs. A thick layer of cedar or pine mulch will help retain moisture for the grass while being safe for your pets.
Maintain proper drainage and aeration. Citronella grass hates “wet feet” and can develop root rot in compacted soil. Use a garden fork to aerate the soil around the planting hole to ensure oxygen reaches the roots, promoting a stronger, more resilient plant.
Strategic Landscaping: Keeping Dogs and Plants Separate
A professional landscaper knows that zoning your yard is the secret to a happy home. Create a designated “dog zone” with hardy turfgrass like Kentucky Bluegrass or Tall Fescue. These grasses handle foot traffic well and are safe for dogs to roll on.
Use physical barriers to protect your ornamental plants. A low decorative fence or a border of large, smooth river rocks can signal to your dog that a certain area is off-limits. This “psychological barrier” works well for trained dogs who understand boundaries.
Prune your citronella grass regularly. Use sharp bypass pruners to remove dead or overhanging blades that might tempt a passing dog. Keeping the plant tidy reduces the chance of blades breaking off and becoming a choking hazard on the lawn.
Safe Pest Management
While citronella helps with mosquitoes, you may still deal with aphids or spider mites. Avoid using systemic insecticides that can make the plant leaves toxic. Instead, use a simple solution of water and a few drops of castile soap to wash away pests.
Always check the safety data sheets of any product you use in your yard. Even “organic” products can be irritating to a dog’s sensitive nose and paws. Apply treatments in the evening when your dog is inside to allow the product to dry completely.
Best Dog-Safe Mosquito Repellent Plants
If you are still worried about is citronella grass safe for dogs, there are several other plants that offer repellent properties with a higher safety margin. Diversifying your garden not only looks better but provides a more robust defense against insects.
Lemon Balm (Melissa officinalis) is an excellent choice. It is a member of the mint family and is considered very safe for dogs. It grows vigorously, so you may want to keep it in a container to prevent it from taking over your garden beds.
Catnip (Nepeta cataria) is surprisingly effective at repelling mosquitoes—some studies suggest it is more effective than DEET. While it might make your neighborhood cats very happy, it is non-toxic to dogs and adds a lovely purple bloom to your landscape.
- Basil: Great for the kitchen and repels flies and mosquitoes.
- Rosemary: A hardy perennial that dogs usually find too pungent to eat.
- Lavender: Calming for humans and dogs alike, while deterring fleas and moths.
- Marigolds: Contain pyrethrum, used in many organic bug sprays, but keep them in pots to prevent dogs from trampling them.
Safety Steps for New Garden Additions
Whenever you introduce a new species to your yard, follow a safety protocol. Start with one plant and observe how your dog interacts with it. Some dogs have zero interest in plants, while others are “botanical explorers” who want to taste everything.
Supervise your dog during their first few outings after you have finished your landscaping project. If you see them sniffing the citronella grass too intently, use a redirection command like “leave it” and reward them with a dog-safe treat or a toy.
Keep a garden journal. Note the dates you fertilized, what products you used, and any changes in your dog’s behavior. This information is invaluable if you ever need to visit the vet, as it helps them rule out or identify potential toxins quickly.
Frequently Asked Questions
Can I Use Citronella Spray on My Dog?
No, you should never use DIY citronella sprays or pure essential oils directly on your dog. Many essential oils are toxic to pets when absorbed through the skin or ingested during self-grooming. Stick to vet-approved flea and tick preventatives.
Is Dried Citronella Grass Safe for Dogs?
Dried grass is still fibrous and can cause internal irritation or blockages. In fact, dried blades can be even sharper and more brittle than fresh ones. Always rake up clippings after pruning your ornamental grasses.
What Should I Do If My Dog Eats Citronella Grass?
If your dog eats a small amount, monitor them for vomiting or lethargy. Offer plenty of fresh water. If they have consumed a large amount or seem to be in pain, contact your veterinarian or a pet poison control center immediately.
Does Citronella Grass Actually Repel Mosquitoes?
The plant itself provides limited protection just by sitting in the garden. The repellent oils are released when the leaves are crushed or bruised. For maximum effect, place the plants in high-traffic areas where they might be brushed against, but keep them elevated in pots for safety.
Conclusion: A Balanced Approach to Beauty and Safety
Creating a lush, insect-free sanctuary doesn’t have to come at the expense of your pet’s health. While we have established that is citronella grass safe for dogs depends largely on how the plant is managed, it remains a viable option for the careful gardener.
By prioritizing clear identification, using raised containers, and opting for non-toxic mulch, you can enjoy the citrusy scent of Cymbopogon without worry. Remember to always put safety first and monitor your dog’s behavior around any new greenery.
Now is the perfect time to head out to your local nursery, check those Latin names, and start building the dog-friendly landscape you’ve always wanted. Your pup—and your mosquito-free ankles—will thank you for the extra 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.”