Fall Toxins to Avoid – Mushrooms, Certain Plants, and Yard Chemicals

Sep 23, 2025

Fall Toxins to Avoid – Mushrooms, Certain Plants, and Yard Chemicals

Autumn is a favorite season for many of us, but it can bring hidden dangers for pets. From colorful mushrooms sprouting after rain to the fertilizers and herbicides often used for fall lawn care, your yard and neighborhood walks may contain toxic risks. Here are three common fall hazards to be aware of:
1. Mushrooms: Fall is peak season for wild mushrooms, and while most are harmless, some are extremely toxic. Dogs, in particular, may sniff out and nibble on mushrooms in the yard or on walks. Ingesting poisonous mushrooms can cause vomiting, diarrhea, seizures, liver failure, and even death. If you see mushrooms in your yard, remove them immediately, and keep a close eye on your pet during walks.
2. Toxic Plants: Many plants and shrubs become more tempting during the fall season. Acorns, for example, contain tannins that can upset your pet’s stomach, and some seasonal plants like chrysanthemums and autumn crocuses are toxic if eaten. Even dried or fallen leaves can harbor mold that irritates sensitive stomachs.
3. Yard Chemicals: Fertilizers, herbicides, and pesticides used for fall lawn prep can be dangerous for pets. These chemicals may stick to your pet’s paws or fur and be ingested later during grooming. Always follow product instructions carefully and keep pets away from treated areas until they are completely dry.