Toxic Plants That Can Affect Pets

Keep your pets SAFE!

A Safety Guide for The Treasure Valley:

DISCLAIMER: This list is not all-inclusive. Plant toxicity can range from mild irritation to severe illness or even death, depending on the plant, the amount ingested, and the animal involved. If you believe your pet has chewed on or ingested a plant—whether it appears on this list or not, please seek veterinary care immediately!

Many of the plants listed below are commonly found in Boise landscapes, houseplants, garden centers, and natural areas throughout the Treasure Valley. Always use caution when selecting plants if you own or share your home or yard with pets.

Emergency & Reference Resources

• Kansas State University Veterinary Poison Control (Animals Only)

  📞 785-532-5679

  Free service for pet owners and veterinarians, open 8 a.m.–5 p.m.

  
  

• ASPCA Animal Poison Control Center

  🌐 aspca.org

  📞 800-213-6680

  Available 24/7; A consultation fee may apply.

  
  

Plants Potentially Harmful to Cats

The following plants are known to cause illness in cats and a few plants may be sold or grow in the Treasure Valley:

Aloe Vera • Amaryllis • Asparagus Fern • Azalea • Baby’s Breath • Baneberry • Belladonna (Deadly Nightshade) • Bleeding Heart • Boxwood • Burning Bush • Buttercup • Caladium • Calla Lily • Castor Bean • Chrysanthemum • Clematis • Cyclamen • Daffodil • Daylily • Dieffenbachia (Dumb Cane) • Dracaena • Easter Lily • Elephant Ear • English Ivy • Eucalyptus • Euonymus • Fiddle-Leaf Fig • Foxglove • Geranium • Hellebore • Hemlock (Poison & Water) • Holly • Honeysuckle • Hyacinth • Hydrangea • Iris • Jack-in-the-Pulpit • Jerusalem Cherry • Kalanchoe • Lantana • Lily (all varieties) • Lily of the Valley • Lupine • Marijuana • Mistletoe • Monkshood • Morning Glory • Mountain Laurel • Mushrooms • Narcissus • Oleander • Onion • Philodendron • Poinsettia (low toxicity) • Pothos • Privet • Rhododendron • Rhubarb • Sago Palm • Schefflera • Scotch Broom • Snowdrops • Star of Bethlehem • String of Pearls • Sweet Pea • Tulip • Tomato plant (leaves, stems, green fruit) • Virginia Creeper • Weeping Fig • Wisteria • Yews (Taxus species)

 Important for Boise cat owners:Lilies are extremely dangerous to cats, even small exposures to pollen or vase water can be fatal.

Plants Potentially Harmful to Dogs

These plants are commonly found in Boise yards, parks, foothills, and landscapes and may cause digestive upset, neurological symptoms, or worse if ingested by dogs:

Apricot (pits) • Azalea • Bird of Paradise • Boston Ivy • Caladium • Castor Bean • Chokecherry • Daffodil • Daphne • English Ivy • Foxglove • Hemlock (Water) • Hyacinth • Hydrangea • Jerusalem Cherry • Jimson Weed • Jonquil • Lantana • Lily-of-the-Valley • Mandrake • Mistletoe • Morning Glory • Narcissus • Nightshade • Poinsettia • Pokeweed • Rhododendron • Rhubarb • Solanum species • Tulip • Umbrella Plant • Yews

A Note for Treasure Valley Gardeners

Boise’s climate supports a wide variety of ornamental plants, many of which can be harmful to pets. Before planting or purchasing houseplants, check toxicity information, especially if your pets like to chew, dig, or explore.