Exotic species are those that have been intentionally or unintentionally introduced by humans into an ecosystem in which they did not evolve. Such introductions probably occur frequently as natural phenomena. Exotic tree species are species introduced to an area where they do not occur naturally. Such species must initially be planted, but may be able to regenerate naturally later. There is a plant that is really deadly to humans and that is the elegant.

The largest flower in the world is a parasite | Harvard Magazine

Rafflesia arnoldii this blossoms of which are crimson, magenta or creamy white, is one of the most toxic plants in the world. Every part of the plant, from its stem to its sap, is incredibly poisonous if ingested. This flower is also called the corpse flower because its a silent killer. Exotic trees grow fruit and are like palm trees or trees that you don’t see often were people live just on beach’s or rainforests.

Coconut palm tree

There’s so many different types of palm trees these help with oxygen and food resources and wood. But there’s exotic ones that make wax and there really tall and thin in forests people harvest from them by cutting into the tree and leaving a bucket there for the wax to drip out. When out there is really colourful exotic trees that you can find on islands or some where that you know of you can get artificial plants and trees anyway to put in your home.