Certainly, poisonous plants exist, and Hawaii has its share of them.
A simple Google search brings up a long list of websites which will help you identify not just the plants, but also the symptoms that can occur from ingesting, or touching each dangerous plant.
Close to home, Kauai Seascapes Nursery’s website features large photos of ten of the most common noxious plants here. The website gives good hints about avoidance so you can lessen the chances of being harmed by an unknown leafy assailant.
Instead of a list of poisonous plants, the state of Hawaii maintains an online list of the top ten inquiries about plants received by the Hawaii Poison Hotline. With luck, you’ll never have to dial 1-(800) 222-1222.
Curiously, at the top of the State’s list is the popular plumeria. It seems that children, enchanted by its sweet smell are the most likely to taste the flower. All parts of the plumeria are poisonous. If large amounts are eaten, vomiting, and diarrhea will follow. The plant also produces a milky sap that can cause a rash, and skin blistering.