Timber! Get out your hard hat and coveralls, we're talking about the many and varied ways trees are up to no good.

Sources:

https://en.wikipedia.org/wiki/Manchineel

https://en.wikipedia.org/wiki/Dendrocnide_moroides

https://www.treehugger.com/natural-sciences/gympie-gympie-plant-sting-can-madden-kill.html

https://www.reiffandbily.com/100-people-killed-trees-every-year-united-states/

http://www.hellistreeconsultants.co.uk/page/risk-of-trees-causing-injury-or-death/71/

http://paradise.docastaway.com/falling-coconut-deaths/

https://www.mnn.com/earth-matters/wilderness-resources/stories/tree-arborist-redondo-beach-mayor