Dangerous Plants

Plant names and signs of poisoning: 

Listed below are the dangerous parts (in italics) of some plants and symptoms of ingestion.

Listing is alphabetical by common plant name.


  • Apple, Apricot, Cherry (Leaves, seeds & pits) -
    Apprehension, dilated pupils, hyper-ventilation, shock
  • Asparagus Fern (Entire plant) -
    Allergic dermatitis with repeated exposure, berries may cause vomiting
  • Azalea, Rhododendron (Entire plant) -
    Vomiting and diarrhea plus depression of central nervous system and cardiovascular collapse, hyper-salivation, weakness, coma, hypotension
  • Caladium, Diffenbachia, Dumb Cane, Elephant Ears (Entire plant) -
    Intense burning and irritation of mouth, tongue, and lips
  • Daffodil, Narcissus (Entire plant) -
    Gastrointestinal disorders, convulsions, shivering, hypotension, muscular tremors and cardiac arrhythmia
  • English Ivy (Entire plant)
    Gastrointestinal upset, diarrhea, hyper-activity, dyspnea and coma, hyper-salivation, fever, polydipsia, mydrisis, muscular weakness and ataxia
  • Foxglove (Entire plant)
    Cardiac arrhythmia, vomiting, diarrhea, weakness
  • Holly (Entire plant)
    Vomiting and diarrhea plus central nervous system depression
  • Lilly of the Valley (Entire plant)
    Ataxia, vomiting, cardiac arrhythmia
  • Mistletoe (Entire plant)
    Gastrointestinal disorders, cardiovascular collapse, dyspnea, bardycardia, erratic central nervous system behavior
  • Morning Glory (Seeds)
    Diarrhea
  • Oleander (Entire plant)
    Vomiting, diarrhea, abnormal pulse, pulse rate arrhythmia, decreased body temperature, oral irritation
  • Philodendron (Entire plant)
    Intense burning and irritation of the mouth, tongue, and lips
  • Poinsettia (Entire plant)
    Considered to be low in toxicity. May cause mild vomiting or nausea
  • Yew, Japanese Yew (Entire plant)
    Acute cardiac failure; early signs include muscular tremors, dyspnea

Below are less common household plants also considered toxic to small companion animals:

  • Aloe Vera, Amaryllis, Apple seeds, Andromeda, Apple Leaf Croton, Arrowgrass, Arrowhead, Autumn Crocus, Avocado
  • Begonia, Bittersweet, Black Locust, Bleeding Heart, Boston Ivy, Buttercup, Buddhist Pine, Bird-Of-Paradise, Branching Ivy, Buckeye
  • Calla Lilly, California Poppy, Carnation, Castor Bean, Ceriman, Charming Dieffenbachia, Chinese Evergreen, Chives, Chokecherry, Christmas Rose, Chrysanthemum, Clematis, Climbing Lily, Cineraria, Cordatum, Corn Plant, Cornstalk Plant, Cowslip, Crocus, Croton, Crown of Thorns, Crown Vetch, Cuban Laurel, Cutleaf Philodendron, Cycads, Cyclamen
  • Daphne, Datura, Delphinium, Devil's Ivy, Dicentra, Donkey Tail, Dracaena Palm, Dragon Tree, Dutchman's Breeches
  • Easter Lilly, Elderberry, Elaine Codiaeum, Emerald Feather, Eucalyptus, Exotica Perfection Dieffenbachia
  • Fiddle-leaf Fig, Fiddle-leaf, Florida Beauty, Four O'Clock, Foxtail Fruit Salad Plant
  • German Ivy, Giant Dumb Cane, Glacier Ivy, Gladiola, Gold Diffenbachia, Gold Dust Dracaena, Green Gold Nephthytis
  • Hanh's Self-Branching English Ivy, Heartleaf Philodendron, Hemlock, Honeysuckle, Horse-Chestnut, Horsehead Philodendron, Hurricane Plant, Hyacinth, Hydrangea
  • Indian Laurel, Indian Rubber Plant, Iris, Ivy
  • Jack-In-The-Pulpit, Janet Craig Dracaena, Jasmine, Jerusalem Cherry, Jimsonweed, Jonquil, Juniper
  • Kalanchoe
  • Laburnum, Lacy Tree Philodendron, Lamb's Quarter, Lantana, Larkspur, Laurel, Lily, Locoweed, Lobelia, Lords-and-Ladies, Lupine
  • Madagascar Dragon Tree, Marble Queen, Marigold, Marijuana, Mayapple, Medicine Plant, Milkweed, Miniature Croton, Mexican Breadfruit, Mock Orange, Monkshood, Mother-In-Law Tongue, Mountain Laurel, Mushrooms
  • Needlepoint Ivy, Nephthytis, Nightshade
  • Oak Tree (buds & acorns), Onion
  • Panda, Peace Lily, Peach pits, Pencil Cactus, Plumosa Fern, Poison Hemlock, Poison Ivy, Poison Oak, Poison Sumac, Pokeweed, Poppy, Potato Shoots, Pothos, Precatory Bean, Primula, Privet
  • Red Emerald, Red Princess, Red-Margined Dracaena, Rhubarb, Ribbon Plant, Ribbon Cactus, Rubber Tree, Rosary Pea
  • Saddle Leaf Philodendron, Sago Palm, Satin Pothos, Schefflera, Shamrock Plant, Shunk Cabbage, Silver Pathos, Snake Plant, Snowdrop, Snow On The Mountain, Sorghum, Star of Bethlehem, Stinging Nettle, Stinkweed, Swiss Cheese Plant
  • Taro Vine, Toadstools, Tobacco, Tomato Plant
  • Umbrella Tree
  • Water Hemlock, Weeping Fig, Wisteria

If you suspect your companion animal may have ingested a poisonous substance, you may wish to use a national animal poison control emergency service such as:

University of Illinois / ASPCA

National Animal Poison Control Center*  1-888-426-4435

*These services will assess a consultation fee (payable by major credit card) for each case. They are not affiliated with the Michigan Humane Society.

 

http://www.michiganhumane.org/site/News2?page=NewsArticle&id=9885&news_iv_ctrl=1844