Harmful Spring Plants & Dogs

There are over 700 spring time plants that are poisonous to pets, this is just a few that many people have planted around their house. I have several of these myself and I am careful to not let my dogs get hold of them. Putting up simple fences is one way to keep your pet's from getting to these plants.
Tulip - Ingestion can result in intense vomiting, depression, diarrhea, hyper-salivation, drooling and lack of appetite.
Hyacinth - Ingestion can result in intense vomiting, diarrhea, depression and tremors.
Daffodil - Ingestion can result in severe gastrointestinal illness, convulsions, seizures, low blood pressure and tremors.
Peace lily - Ingestion can result in ulcers in the mouth, vomiting and diarrhea.
Easter cactus - Ingestion can result in vomiting, diarrhea and depression. Cats can also develop staggering.
Easter daisy - This plant is considered non toxic.
Easter orchid - This plant is considered non toxic.
Easter lily cactus - This plant is considered non toxic.
Resurrection lily - This plant is considered non toxic.
Crown of Thorns - Ingestion results in vomiting and diarrhea.
Azalea - Vomiting, diarrhea, hyper-salivation, weakness, coma, hypertension, CNS depression, cardiovascular collapse and death.
Crocus - Excessive salivation, abdominal pain, diarrhea, vomiting, gastro-intestinal disorders, lack of appetite, tremors, convulsions, seizures
Rhododendron - Vomiting, diarrhea, hyper-salivation, weakness, coma, hypertension, CNS depression, cardiovascular collapse and death.
Tiger Lily - Vomiting, lethargy, kidney failure. Cats are only species known to be affected.
Easter Lily - Vomiting, lethargy, and kidney failure. Cats are only species known to be affected.
American Bittersweet - Weakness, convulsions, gastroenteritis (vomiting, diarrhea.)
Clematis - Vomiting, diarrhea, oral ulcers, ataxia irritant
Foxglove - Cardiac arrhythmia, vomiting, diarrhea, weakness, cardiac failure, death.
Lily of the Valley - Ataxia, vomiting, cardiac arrhythmia, death.
Narcissus - Severe gastrointestinal disorders, convulsions, shivering, hypertension, dermatitis, muscular tremors, and cardiac arrhythmia.
Morning Glory - Seeds may cause hallucination, may cause diarrhea.