Health note: This guide is general information, not veterinary advice, and our writers are not veterinarians. If a bird is sick, injured or not improving, contact a poultry vet, and always follow product labels and your vet's instructions for any medication. How we write health content.
You should not feed geraniums to chickens, but a few pecks at a garden geranium are unlikely to be an emergency: the plant is rated a low-severity poison, based mainly on reports in pets and horses. There is very little information specific to chickens, so the safest approach is to keep geraniums out of the run and not offer them as greens. Here is what is actually known.
Key Takeaways
- The geraniums sold as bedding and potted plants are Pelargonium species.
- ASPCA lists them as toxic to dogs, cats and horses, with geraniol and linalool as the toxic principles.
- NC State Extension rates the poison severity as low; signs are mainly stomach upset when a lot is eaten.
- There is little chicken-specific data, so do not feed geraniums as greens.
- Treats of any kind should stay under about 10 percent of the diet.
Correction: an earlier version of this article described geraniums as a proven poultry poison, listed breathing problems as a sign, recommended gastric lavage and liver-support supplements, and claimed herbs such as oregano act as natural dewormers; these claims were unsupported and have been removed.
Which plant is a “geranium”?
The red, pink and white geraniums in window boxes, hanging baskets and bedding displays, including scented geraniums, are Pelargonium species in the family Geraniaceae. This is the plant that pet-poison references mean when they list “geranium.”
The toxicity information below applies to these garden geraniums. If you are unsure what a plant in your run is, your county extension office can help identify it.
How toxic are geraniums?
The ASPCA Animal Poison Control Center lists geranium as toxic to dogs, cats and horses. The compounds it names as the toxic principles are geraniol and linalool, the aromatic oils that give the leaves their scent.
NC State Extension rates Pelargonium’s poison severity as low. It lists the leaves as the toxic part and notes that problems occur mainly when the plant is eaten in quantity. Cats are the most sensitive of the species it mentions.
Neither source gives data for chickens. That means nobody can tell you a safe amount for a hen, which is why the sensible advice is: don’t feed them, but don’t panic over a nibble.
Signs to watch for
The signs recorded for geranium ingestion come from pets. NC State describes mainly digestive upset, with more serious signs only after larger amounts:
- Loss of appetite
- Depression or unusual quietness
- Wobbliness or muscle weakness after larger exposures
- Low body temperature after larger exposures
- Mild skin irritation from contact
Breathing problems are not a recorded sign of geranium ingestion. Sneezing, nasal discharge, gasping or swelling of the head, comb or wattles point to disease, not a garden plant. Report sick or dying birds with these signs to your state veterinarian or USDA at 1-866-536-7593.
What to do if your chickens ate geraniums
- Stop further access: fence the plants off or move containers out of reach.
- Keep feed and fresh water available and watch the birds that ate the plant for a day or two.
- If a bird is quiet, stops eating or seems weak, move it to a quiet pen so you can watch its eating and droppings. Plant poisoning does not spread between birds.
- Call a veterinarian if signs are more than mild or do not settle. Treatment for a low-severity plant is supportive care; there is no specific antidote.
Keeping geraniums and chickens apart
- Grow geraniums in hanging baskets, window boxes or raised planters out of pecking range.
- Put a simple wire barrier around beds near the run.
- Pick up fallen leaves and flowers from the run.
- Plan the planting around your coop with care. See what to plant next to a chicken coop and how to keep chickens out of the garden.
Better greens for your flock
If you want to give your chickens something green, leafy vegetables, herbs such as parsley and tender grass are better choices than ornamental flowers. Keep these in proportion: the University of Illinois College of Veterinary Medicine advises that scratch grains, leafy greens and vegetables make up no more than 10 percent of the diet, with a complete feed providing the rest. Poultry extension guidance also warns that too many table scraps and greens can reduce egg production, and that scraps and scratch together should be no more than the birds can finish in about 20 minutes.
Herbs are not medicine. Oregano, thyme and similar plants are sometimes promoted as natural dewormers, but the Merck Veterinary Manual reports that plant extracts and essential oils have given inconsistent results against poultry worms. If worms are diagnosed, ask a veterinarian about an approved dewormer such as fenbendazole.
FAQs
Will a chicken die from eating a geranium leaf?
It is unlikely. Garden geraniums are rated a low-severity poison, with problems mainly after larger amounts. Still, there is little chicken-specific data, so do not offer them.
Are scented geraniums safer?
No. Scented geraniums are also Pelargonium species, and their scent comes from the same kind of aromatic oils, including geraniol and linalool.
Can chickens eat geranium flowers?
The toxicity listings name the leaves as the problem part, but there is no evidence that the flowers are a safe treat for chickens, so keep them out of the diet too.
Do chickens avoid geraniums on their own?
Many chickens ignore strongly scented plants, but this varies between birds. Don’t rely on it; keep plants out of reach if your birds peck at them.
Conclusion
Geraniums are not a good chicken treat, but they are a low-severity plant hazard rather than a deadly one, based on what is known from pets and horses. Keep them out of reach, feed a complete ration with modest amounts of safe greens, and call a vet if a bird is clearly unwell.
Sources
- ASPCA Animal Poison Control: Geranium
- NC State Extension Gardener Plant Toolbox: Pelargonium
- University of Illinois College of Veterinary Medicine: Care and Feeding of Backyard Chickens
- Merck Veterinary Manual: Overview of Helminthiasis in Poultry
- USDA APHIS: Signs of Illness in Poultry
Checked September 2026. Labels change, so always read the label on the product you buy. See our editorial policy for how we research health articles.
