poisonous plants common symptoms
Lily of the Valley. Lilly of the Valley (Convallaria majalis) is a popular holiday plant that is toxic to dogs and requires aggressive treatment. Symptoms of plant poisoning which are common to most poisonous plants include diarrhea, nausea and drooling.This particular plant also can cause severe cardiac arrhythmias, seizures and a decreased heart rate. Emergency medical attention is needed.ist of Dog Toxic Plants. This is a list of the most common types of dog poisonous plants. It does NOT contain every possible variety. Click on the link on the top of each column to see more details on the toxic parts of the plant, why it is poisonous to dogs and related symptoms.