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Poisonous Daylilies

By David Harris
Daylilies are not poisonous to humans.
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Daylilies (Hemerocallis), are a popular flowering plant found in many American gardens. Known for their orange flowers that resemble a trumpet, daylilies are not poisonous to humans or dogs. However, they do pose a danger to cats.

Time Frame

Your cat will likely develop symptoms of daylily poisoning a few hours after eating the plant. The first symptoms to appear will be lethargy, lack of appetite and vomiting.


If your cat has eaten daylilies, its symptoms will continue to worsen without immediate veterinary care. If left untreated, your cat will likely go into kidney failure from eating daylilies.


Every part of the daylily, from the flower to the stem, is poisonous to cats. However, if your kids, horses or dogs eat some, they will have no reaction whatsoever.


About the Author


David Harris is a writer living in Portland, Ore. He currently is the editor-in-chief of the online magazine Spectrum Culture. He holds a Master of Fine Arts in creative writing from Sarah Lawrence College.