Common names
Hydrangea

Botanical name
Hydrangea macrophylla

Poisonous parts
Leaves and buds

Toxins
Hydragin

Notes
Poisoning from eating the flower buds has occurred. Symptoms include vomiting, abdominal pains, diarrhea, labored breathing, lethargy and coma. Sensitive individuals may develop contact dermatitis from handling the plants.

Toxicity Information
Courtesy of:
Derek B. Munro
Biological Resources Program
Eastern Cereal and Oilseed Research Centre
Research Branch Agriculture and Agri-Food Canada
Ottawa, Ontario K1A 0C6