Sago Palm : These ornamental palms are popular in warmer climates and every part of it is toxic to dogs. They are also said to be very alluring as some dogs find them quite delicious. Serious side effects including liver failure and possible death can occur, so be very careful.
Tomato Plant : With summer comes tomato plants in the garden. Make sure to keep dogs clear though, as they can cause weakness, gastrointestinal problems, drowsiness, dilated pupils, slow heart rate, and confusion.
Aloe Vera : We rub it on our skin and some of us even drink the juice, but aloe is something your dog needs to avoid. Saponins in this succulent can cause vomiting, diarrhea, lethargy, tremors, and general central nervous system depression.
Ivy : Vomiting, diarrhea, excessive salivation and drooling, and abdominal pain are caused by ingesting ivy.
Amaryllis : Another poisonous plant for dogs, this flowering bulb is a very common garden ornamental. Pay particular attention if you grow the bulbs indoors.
Gladiola : This lovely summer flower can cause drooling, vomiting, diarrhea, and general lethargy.
American Holly : A popular ornamental shrub in some areas, holly is a low toxicity plant but your dog may experience vomiting and diarrhea if they eat it.
Daffodil : Commonly found in the spring, these flowers can cause intestinal spasms, low blood pressure, salivation, tremors, vomiting, diarrhea, and even cardiac arrhythmia.
Baby’s Breath : You know it from virtually every bouquet of flowers you’ve ever received. This small flower that accompanies floral arrangements can cause vomiting and diarrhea.
Milkweed : Very common, very pleasant to look at, very toxic to dogs. Milkweed will induce the usual vomiting and diarrhea, but your dog may also experience difficulty breathing, rapid and weak pulse, dilated pupils, and even kidney or liver failure and death.
Castor Bean : Not common in gardens, castor bean is found in parks and other large-scale outdoor landscaping. If ingested your dog may experience drooling, vomiting, diarrhea, extreme thirst, loss of appetite, and abdominal pain. Potentially fatal in severe cases, which may present as muscle twitching, tremors, seizures, and even coma.
Azalea/Rhododendron : These common flowering shrubs are poisonous plants for dogs and produce serious gastrointestinal issues. They can additionally cause weakness, discoordination, and weak heart rate. Potentially fatal.
Tulip : They’re another poisonous plant for dogs. The usual gastrointestinal problems are accompanied by central nervous system depression and even convulsions and death.
Chrysanthemum : Vomiting, diarrhea, skin rash, and drooling may be in your dog’s future if they ingest this common flower.
Begonia : A very common garden flower that can cause extreme oral irritation and excessive inflammation of the mouth, as well as drooling and vomiting.
Oleander : All parts of this flower, fresh or dried, are poisonous and should be avoided by all pets.