Tea tree is not safe for dogs to consume. All parts of the tea tree shrub, including essential oils, can cause gastrointestinal irritation and have a toxic effect on dogs.
Consuming any part of the tea tree shrub can potentially cause vomiting, diarrhea, stomatitis, and gastrointestinal irritation in dogs. Essential oils from tea trees are also toxic and should not be given to dogs.
Tea tree should not be given to dogs in any amount. It should be kept away from them to prevent accidental ingestion. If a dog does accidentally consume tea tree, it is important to seek immediate veterinary attention.