A very useful thing that we want to share with you is the list of poisonous plants for cats and what reaction follows the assumption of each one of them in order to give an information that can be useful to avoid these “hidden” dangers that they could easily be in our homes without our knowledge.

Below is the list of poisonous plants for cats:


Aconite (Aconitum) Monkshood – The whole plant – Gastrointestinal problems, at high doses, causes nervous and cardiac depression.

Garlic (Allium sativum) -Bulbi buds flowers and stems-

Gastrointestinal problems, haemolytic anemia, methemoglobinemia, liver damage

Holly, American Holly and English Holly (Ilex) -Fruits-Gastrointestinal problems

Mountain leaves-laurel and nectar- Gastrointestinal and neuromuscular problems.

Amaryllis – Leaves and flowers – Gastrointestinal problems, at high doses, causes nervous and cardiac depression. The symptoms are: vomiting, tremors and respiratory problems.

Azalea – Leaves and nectar – Gastrointestinal, neurological, cardiological problems

Boxwood-Leaves-Gastrointestinal Problems Caladio-

Causes mouth inflammation.

Calla Lily (Zantedeschia Aethiopica) -Leaves-

Causes skin and mucosal irritation

Campanula, Stramonium, Vines Trombetta (Datura spp.) Jimson weed, Thorn apple-Leaves and seeds-It causes mydriasis, sight disorders, arrhythmias, delirium and convulsions

Colchico-The whole plant-Gastrointestinal problems, and respiratory muscle paralysis.

Crocus (Colchicum) – All the plant –

Gastrointestinal problems, renal failure.

Dieffenbachia-Leaves-Irritates mouth, esophagus, stomach, intestine, gastrointestinal problems

Digitalis purpurea (Digitalis purpurea) Foxglove-

The whole plant – Gastrointestinal problems and arrhythmias.

Ivy-Leaves and flowers-Gastrointestinal problems, at high doses, causes nervous and cardiac depression. The symptoms are: vomiting, tremors and respiratory problems.

Euphorbia (Canidoscolus Stimulosum) – Irritating hairs on leaves and stems – Causes sialorrhea, buccal irritation, tremors, vomiting, dyspnea and bradycardia

Ficus-Causes allergies.

Filodendro-Leaves and flowers -Gastroenteric problems and inflammation of the mouth.

Cardinal flower and Cardinal Blue Flower, Indian Tobacco (Lobelia) – All plant – Causes vomiting and neuromuscular symptoms

Glycine-Fruits and seeds-Gastrointestinal problems, at high doses, causes nervous and cardiac depression.

Jasmine (Gelsemium sempervirens) Yellow Jessamine, Evening trumpet flowerCarolina Jessamine-

Whole plant – Causes incoordination, visual disturbances, dry mouth, dysphagia, muscle weakness, seizures, respiratory failure

Glorious lily and climbing lily-the whole plant-

Causes stomatitis, gastrointestinal and renal failure.

Daffodil (Narcissus pseudonarcissus) -Bulbs-Gastrointestinal problems

Hydrangea (Hydrangea Macrophylla) – Flower bud –

Causes vomiting, abdominal pain, lethargy, cyanosis, convulsions, muscle flaccidity, incontinence, coma

Horse Chestnut, Goat Eye (Aesculus spp.) – Fruits and Twigs-Causes vomiting and Diarrhea

Iris (Iris spp.) – Bulbs and rhizomes – Gastrointestinal problems

Privet (Ligustrum vulgare) – All the plant – Gastrointestinal problems

Lupine (Lupinus spp.) – Whole plant – Causes muscle weakness, paralysis, respiratory depression, convulsions

Mancinella (Hippomane mancinella) -Linfa-

Causes stomatitis vomiting, hemorrhagic diarrhea, dermatitis, keratoconjunctivitis

Margherita, Feverfew (Chrysanthemum spp.) – Linfa

Causes dermatitis

Marijuana (Cannabis sativa) – Leaves and sprouts –

Causes central nervous system depression and confusion

Mescal, Peyote (Lophophor Williamsii) – Buds

Causes gastroenteritis, visual changes, dizziness, hallucinations, circulatory depression

Lily of the valley (Convallaria Majalis) – All the plant –

Causes gastrointestinal and arrhythmias

English walnut (Juglans Regia), Black walnut (Juglans nigra)

-Mallo-Causes gastroenteritis

Crab Eye (Abrus Precatorius) – Chewed or broken seeds – Potentially fatal gastrointestinal problems

Oleander – Whole plant – Gastrointestinal problems, causes nervous and cardiac depression.

Hydrangea-Leaves and flowers-Vomiting and diarrhea

Nettle (Urtica Diocia) and Laportea Canadensis-Leaves and petioles-Causes sialorrhea, buccal irritation, tremors, vomiting, dyspnea and bradycardia

Poppy-Causes mouth inflammation.

Carolina pepper (Calycanthus spp.) – Semi-

Causes vomiting, ataxia, sensory depression, convulsions and cardiac dysfunction

Piè corvino, Ranuncolo (Ranunculus spp.) – Linfa-

Causes stomatitis, dermatitis, gastrointestinal tract, renal failure, incoordination, convulsions

Pothos (scindapsus aureus) – Causes inflammation of the mouth.

Primula, Veronica (Primula spp.) – Leaves and stems-

Causes gastrointestinal and contact dermatitis

Ricino (Ricinus Communis) – Seeds-Causes gastrenteritis, depression, fever, abdominal pains, hemorrhagic diarrhea, arrhythmias, convulsions

Rhododendron-Leaves and flowers-Vomiting

Elderberry (Sambucus spp.) – The whole plant – Gastrointestinal problems

Solano America (Phytolacca Americana) – Leaves and roots – Gastrointestinal problems

Poisonous sumac (Rhus Toxicodendron) – All the plant – Causes allergic contact dermatitis

Poinsettia (Poinsettia Euphorbia Pulcherrima) and all the plants of the species Euphorbia-Leaves, stems, flowers-Irritating to the mucous membranes and to the entire digestive system: it causes injury to the eyes, to the mucous membranes of the mouth to the stomach and intestine. The symptoms are: vomiting, diarrhea, inflammation of the mouth and must be treated promptly.

Tobacco (Nicotiana tabacum) – Leaves – Causes gastroenteritis, agitation, muscle tremors, stiff limb gait, ataxia, weakness, prostration, dyspnea, paralysis, rapid death

Badger (Taxus) – Large part of the plant – Causes incoordination, dry mouth, mydriasis, abdominal pain, vomiting, sialorrhea, cyanosis, weakness, coma, arrhythmias, cardiorespiratory insufficiency

Tulip (Tulipa spp.) – Bulbs-Causes gastroenteritis

Bird of Paradise (Strelitzia reginae) – Seeds – Causes vomiting and diarrhea

Mistletoe (Viscum album) – All the plant – Causes nausea, vomiting and gastroenteritis.

American vine – the whole plant – causes inflammation of the mouth.

Wisteria (Wisteria spp.) – Whole plant – Causes gastrointestinal


Some essential oils are not acceptable to cats because of their strong fragrance and can therefore be used to keep them away from plants. It is possible to prepare cotton balls to be placed at the base of the potted plants. They should be soaked with rosemary, citronella, orange, cinnamon or lavender essential oil. The remedy is also valid for spaces in the home, such as furniture and cabinets.

At the entrance to the vegetable garden or near the plants to be protected it is possible to place transparent plastic bottles full of water. It seems that cats are annoyed by the bright reflections that can appear on the bottles, especially when they are hit by the sun’s rays. Others claim that it is the sight of water that scares cats. Since the remedy is very simple, trying is not harmful.

3) CAT grass
Catnip seems to have been created specifically for cats, who love it in a special way. Many cats are really fond of it. Furthermore, catnip can help their body digestion. How to keep cats away from other plants? Placing a pot of catnip in the garden or on the balcony, so that cats are attracted by their favorite grass and not by other plants.

Cats can’t stand the smell of coffee. It is possible to use coffee powder to be used to sprinkle saucers to be placed under the plants, or small bowls to be placed near the pots on the balcony. Do not use fresh coffee, but coffee grounds recovered from the coffee maker.