According to the University of Arkansas, yucca plants, including the seeds, are not toxic to humans. The ASPCA states that yucca plants cause vomiting and diarrhea in cats and dogs, and liver disease and photosensitivity in horses.
About the Author
Melody Lee holds a degree in landscape design, is a Florida Master Gardener, and has more than 30 years of gardening experience. She currently works as a writer and copy editor. Her previous jobs include reporter, photographer and editor for a weekly newspaper.