Is Geranium Toxic to Dogs? Leaves and Oil Risks

Name: Is Geranium Toxic to Dogs? Leaves and Oil Risks
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

Is geranium toxic to dogs? Yes. The plants most people call geraniums belong to the genus Pelargonium, and they are listed as toxic to dogs, cats, and horses [1]. The toxic principles are geraniol and linalool, and the essential oil form is a bigger concern than a single chewed leaf [1][2].

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

True geraniums (hardy Geranium species) are not the same plant as the common potted or bedding geranium, which is a Pelargonium. The Pelargonium types are the ones listed as toxic to dogs [1][2].
All parts of a Pelargonium can matter, but the leaves and the concentrated essential oil carry the highest risk. Signs include vomiting, anorexia, depression, and dermatitis [1].
Scented geraniums (also Pelargonium species) are toxic to dogs and cats, with essential oils as the toxic principle. Signs are mainly stomach upset, and larger exposures can cause ataxia, muscle weakness, depression, or hypothermia [2].
Geranium essential oil is far more concentrated than a leaf. A few drops of oil can deliver a much larger dose of geraniol and linalool than chewing a stem.
If your dog ate geranium leaves or licked oil, call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Do not induce vomiting unless a veterinarian tells you to.

Is Geranium Toxic to Dogs?

The short answer depends on which plant you mean. The ASPCA lists "Geranium" with the scientific name Pelargonium species as toxic to dogs, cats, and horses [1]. The same organization lists "Scented Geranium," also a Pelargonium species, as toxic to dogs and cats [2]. So the plants sold as geraniums in garden centers and grocery stores are the ones to keep away from your dog.

True Geraniums vs. Pelargonium

This is where the naming gets confusing. True geraniums, often called hardy geraniums or cranesbill, belong to the genus Geranium. The common flowering geranium you buy in a pot is actually a Pelargonium. The ASPCA toxicity records name Pelargonium species, not Geranium species [1][2]. If you are trying to figure out whether your specific plant is a risk, the scientific name on the tag is the most reliable clue. When in doubt, treat any geranium-type plant as a possible risk and keep it out of reach.

Is Hardy Geranium Toxic to Dogs?

Hardy geraniums are the low-growing perennials used as ground cover in many yards. They are not the same plant as the Pelargonium types that appear in the ASPCA toxic plant records [1][2]. That does not mean a dog should eat them. Any plant material can cause mild stomach upset in a sensitive dog, and a large amount of any leafy plant can cause vomiting or diarrhea. The specific geraniol and linalool concern applies to Pelargonium species [1]. If your dog nibbles hardy geranium and seems fine, watch for stomach upset. If your dog eats a large amount or has ongoing signs, call your veterinarian.

Is Zonal Geranium Toxic to Dogs?

Zonal geraniums are the classic Pelargoniums with the dark horseshoe-shaped band on the leaf. They fall under the Pelargonium species listed as toxic to dogs [1]. The toxic principles are geraniol and linalool, and the expected signs are vomiting, anorexia, depression, and dermatitis [1]. Dermatitis means skin irritation, which can happen if a dog brushes against broken leaves or lies in a patch of them. If your dog chews a zonal geranium leaf, the most likely outcome is stomach upset. A whole plant or a large amount raises the risk.

Is Rose Geranium Toxic to Dogs?

Rose geranium is another Pelargonium, grown for its rose-scented leaves. Scented geraniums are listed as toxic to dogs and cats, with essential oils as the toxic principle [2]. Signs are primarily gastrointestinal upset. Larger exposures could also cause ataxia, muscle weakness, depression, or hypothermia, and cats are described as most sensitive [2]. Dogs are still at risk. Rose geranium essential oil is sold for aromatherapy and skin products, and that concentrated form is a much bigger concern than a leaf.

Is Geranium Essential Oil Toxic to Dogs?

Geranium essential oil is not the same thing as a leaf. It is a concentrated distillate, and the main constituents of geranium (Pelargonium graveolens) oil include citronellol, geraniol, and other compounds [3]. Geraniol is one of the toxic principles named in the ASPCA geranium record [1]. Because oil is concentrated, a small volume can contain a large amount of these compounds. Dogs have been used in research on essential oils for parasite control, and those studies use diluted concentrations, not undiluted oil applied at home [4][3]. Never apply undiluted geranium oil to your dog, and never let your dog lick it off your skin, clothing, or a diffuser.

The Toxic Principle and What It Does in the Body

The ASPCA names geraniol and linalool as the toxic principles in geranium [1]. Scented geranium records list essential oils as the toxic principle [2]. These are volatile plant compounds. When a dog eats plant material or licks oil, the compounds contact the stomach and intestinal lining and can trigger vomiting and appetite loss [1][2].

Geraniol also has documented activity against ticks. In one study, geraniol showed strong repellent effects on brown dog ticks, with efficacy comparable to DEET at certain concentrations and time points [5]. That is useful for understanding why geraniol appears in insect repellent products, but it does not make the oil safe to use on your dog at home. The same compound that repels ticks can irritate a dog's stomach or skin.

Skin contact matters too. The ASPCA lists dermatitis as a clinical sign of geranium exposure [1]. Oils and plant sap can cause redness, itching, or a rash where they touch the skin. If your dog chews or licks the area afterward, some of the oil can be swallowed.

Signs and Their Typical Timeline

Signs of geranium exposure usually involve the stomach and intestines. The ASPCA lists vomiting, anorexia, depression, and dermatitis [1]. Scented geranium exposure is described as primarily gastrointestinal upset, with possible ataxia, muscle weakness, depression, or hypothermia in larger exposures [2].

Vomiting, which may start within a few hours of eating plant material
Loss of appetite or refusing food
Low energy or unusual quietness
Drooling or lip smacking
Red, itchy, or irritated skin where plant sap or oil touched the coat
Unsteady walking, weakness, or low body temperature after a larger exposure [2]

Timing varies with how much was eaten and whether the dog got into concentrated oil. A single chewed leaf often causes mild, short-lived stomach upset. A bottle of essential oil, a diffuser spill, or a large amount of plant material can produce more serious signs. If your dog has a small body weight, the same amount of plant or oil represents a larger dose.

What to Do Right Now

If you saw your dog eat geranium leaves or lick geranium oil, act quickly. Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Have the plant name, the amount you think was eaten, and the time it happened ready.

Do not induce vomiting unless a veterinarian tells you to. Vomiting can be dangerous if a dog is already weak, if the material is caustic, or if there is a risk of aspiration. Your veterinarian will decide whether that step is appropriate.

If oil is on your dog's coat or skin, wipe it off with a damp cloth and mild pet-safe soap, then rinse well. Do not let your dog groom the area before you clean it. If the oil is on your own skin, wash your hands before touching your dog again.

For general guidance on what to do after any plant exposure, see Dog Ate Toxic Plant. For a broader list of plants to keep out of reach, see Plants Poisonous To Dogs.

Veterinary Treatment

Treatment depends on the signs and the amount involved. Your veterinarian will start with a physical exam and questions about what was eaten and when. If the exposure was recent and the dog is stable, the veterinarian may discuss decontamination. That decision is made case by case, and it is not something to attempt at home.

For vomiting and stomach upset, treatment often includes medications to control nausea and protect the stomach lining. Fluids may be given under the skin or into a vein if the dog is dehydrated. If skin irritation is present, the veterinarian may recommend medicated shampoo or a topical treatment. Blood work may be checked if the exposure was large, if the dog is very young or old, or if there are other health problems.

Doses of any medication are calculated by your veterinarian from your dog's weight and health status. There is no home dose for geranium exposure, and no home remedy replaces an exam.

Outlook

Most dogs that eat a small amount of geranium leaf do well with supportive care. The expected signs are vomiting, anorexia, depression, and dermatitis, and these are usually manageable [1]. Scented geranium exposures are described as primarily gastrointestinal, with more serious neurologic signs possible in larger exposures [2]. Dogs that receive prompt care generally recover.

The dogs at higher risk are those that get into concentrated essential oil, eat a large amount of plant material, or have other medical conditions. Small dogs and puppies reach a higher dose from the same amount of plant. If your dog has underlying heart, liver, or kidney disease, tell the veterinarian during the call.

Prevention and Safer Alternatives

The simplest prevention is placement. Keep Pelargonium geraniums out of reach, including pots on low shelves, porch steps, and patio tables. Dogs can reach more than you expect, especially when a plant is at nose level.

If you use geranium essential oil, store the bottle in a closed cabinet. Clean up spills right away. Do not diffuse oil in a small, closed room where your dog cannot leave. Do not apply essential oils to your dog's skin or coat unless a veterinarian specifically recommends a product and dose.

If you want a dog-safe plant for your home, choose from a list of non-toxic options. The ASPCA plant guide includes non-toxic substitutes for common toxic plants [1]. For a wider look at household plants, see Common Houseplants Toxic to Cats and Dogs.

For parasite prevention, use a product your veterinarian recommends. Essential oils are being studied for tick and flea control, and geraniol has shown repellent activity in research settings [5][3]. That research is not a green light for home use. Approved products are tested for safety and dosing in dogs, and they are the safer choice. If you use a flea and tick product, follow the label and your veterinarian's instructions. For more on one common option, see Nexgard For Dogs.

Limitations and When to Contact a Veterinarian

This article covers general information, not your dog's specific case. Individual cases need a veterinarian who can examine your dog, ask about the exposure, and decide on treatment.

Call your veterinarian or a poison control line the same day if your dog ate geranium leaves and has vomited once or twice, is eating less, or seems quieter than usual. Call right away, as an emergency, if your dog got into concentrated geranium essential oil, is vomiting repeatedly, cannot stand or walk normally, feels cold to the touch, or is difficult to wake. Call right away if your dog has skin redness or swelling over a large area after contact with oil or plant sap.

A routine visit is reasonable if the exposure was small, your dog seems normal, and you want a check. Even then, a phone call first helps your veterinary team decide whether your dog needs to be seen.

Frequently Asked Questions

Can a dog die from eating geranium leaves?

Death from eating a few geranium leaves is unlikely. The expected signs are vomiting, anorexia, depression, and dermatitis, which are usually treatable [1]. The risk rises with concentrated essential oil, large amounts of plant material, or a dog with other health problems.

How long do geranium poisoning signs last in dogs?

Mild stomach upset often improves within a day or two with supportive care. Signs after a larger exposure, such as weakness or unsteadiness, can take longer to resolve [2]. If signs are not improving or are getting worse, your dog needs to be seen.

Is geranium oil safe to diffuse around dogs?

Diffused oil puts volatile compounds into the air your dog breathes, and the concentrated oil is a bigger concern than a leaf [1][2]. Some dogs react with drooling, coughing, or stomach upset. If you diffuse, use a room your dog can leave, keep the session short, and stop if you notice any signs.

Should I make my dog vomit after eating geranium?

No. Do not induce vomiting unless a veterinarian tells you to. Vomiting can cause harm in some situations, and the decision depends on what was eaten, when, and how your dog is doing. Call your veterinarian or a poison control line first.

Are all plants called geraniums toxic to dogs?

No. True hardy geraniums (Geranium species) are not the same as the Pelargonium species listed as toxic to dogs [1][2]. The common potted geranium, zonal geranium, and scented geranium are Pelargoniums and carry the documented risk. Check the plant tag for the scientific name if you are unsure.

References

Toxic and Non-toxic Plants: Geranium. ASPCA Animal Poison Control Center.
Toxic and Non-toxic Plants: Scented Geranium. ASPCA Animal Poison Control Center.
Acaricidal and synergistic activity of essential oils, their binary combinations, and nanoemulsions against larvae and unfed adult stages of brown dog tick Rhipicephalus sanguineus (Acari: Ixodidae). BMC veterinary research, 2026.
Essential oil pharmaceuticals for killing ectoparasites on dogs. Journal of veterinary science, 2024.
Evaluating the repellent effects of major essential oil components (Lamiaceae) on brown dog tick Rhipicephalus sanguineus sensu lato) using the larval repellent activity test. Veterinary parasitology, 2025.