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Plants And Foods That Are Poisonous For Chickens

Chickens will eat most things you feed them. They love treats and love to wander around the garden in search of plants, bugs and juicy worms. However there are some plants and foods that can cause illness or be fatal to your hungry hens.


A group of hens feeding in the garden
A group of hens feeding in the garden

Below is a list of foods you should refrain from feeding your chickens.


  • Plants that are part of the nightshade family - Members of the nightshade family include potatoes, tomatoes, and eggplant. The Latin name for these plants is Solanaceae. This is because they contain a compound called solanine. This is toxic to chickens. The compound can be broken down if the plants are cooked however. So any cooked potatoes or tomatoes are generally ok to give to your chickens. If you are worried, it is better to just not feed these plants to your chickens.

  • Onions - Fed in large quantities onions can cause anemia or jaundice, and sometimes it can be fatal. This is because it contains thiosulphate which destroys red blood cells.

  • Avocados - Avocados contain the toxin persin. This has been associated with myocardial necrosis, which is where the heart stops working.

  • Apple seeds - The seeds contain cyanide which can kill your chickens. Any other part of the apple is fine, so when giving them apple ensure they are seed free.

  • Citrus fruit - Citrus fruits probably won’t kill your chickens, however they do cause a drop in egg production. Fed in moderation is ok.

  • Dried, raw beans - Uncooked beans contain hemagglutinin which can be toxic to your chickens. Cooked beans are fine.

  • Chocolate or sweet things - Chocolate contains toxin methylxanthines theobromine. Just like too much sugar is bad for humans, too much sugar can cause your chickens to be overweight leading to a drop in egg production.

  • Salty foods - Chickens can suffer from salt poisoning, as they don’t naturally ingest a lot of salt.

  • Mouldy food - Mouldy food should never be fed to chickens as the mould can cause illness and may be fatal. Overripe, wilted vegetables, or stale bread is all fine as long as mould is not present.

When feeding treats such as bread, cereals, and pasta be very sparing as these food have little nutritional value and can cause your chickens to be overweight. Dairy products and too much iceberg lettuce can cause diarrhea, so these should also be fed in moderation. Please also bear in mind that because chickens (even domestic ones) are classed as farm animals they fall under DEFRA guidelines which currently state that you must not feed chickens food that has been prepared in a kitchen where it might come into contact with any other animal products.


Toxic Garden Plants

There are many garden plants that are also toxic to your chickens. Your chickens will usually stay away from them by themselves as they don’t taste very nice to them. However it can be a good idea to make sure your chickens don’t have access to these plants. Below is a list of garden plants poisonous to your chickens.

  • Bloodroot
  • Bull Nettle
  • Bracken
  • Bryony
  • Carelessweed
  • Castor Bean
  • Cocklebur
  • Curly Dock
  • Delphinium
  • Fern
  • Foxglove
  • Ground Ivy
  • Hemlock
  • Horse Chestnut
  • Horse Radish
  • Hyacinth
  • Hydrangea
  • Ivy
  • Laburnum (seed)
  • Lantana
  • Lily of the Valley
  • Nightshade (Also called Deadly Nightshade)
  • Rhododendron
  • St. Johns Wort
  • Tulip
  • Water Hemlock
  • Yew


Customer Images

Chickens outside of Boughton Wooden Chicken Coop

Comments

Wesley, 4 April 2024

I have been feeding my chickens raw tomatoes out of my garden every summer for 20 years. I have never had a sick chicken. Tomatoes are fine for chickens to eat.


Jennifer, 31 January 2023

Last summer my chickens devoured my tomatoes, the leaves, the green tomatoes and didn't get sick. The completely left the egg plant alone though!


Patricia, 11 July 2021

Can chicken eat zucchini and cushaw leaves


Mary, 16 April 2021

This is a comment about the chickens having foxglove in their pen.... my chickens free- ranged for a while, before destroying everything and every plant in my yard, they ate my foxglove and did not have any adverse effects. I didn't know at the time it was toxic to chickens.


Dave, 28 March 2021

I feed my chickens blended aloe Vera with leaves,is it safe?