Imported from Australia and popularized for their speedy growth — some varieties will shoot up 10 feet in a year — the eucalyptus has a bad rap for suddenly and unexpectedly dropping big, heavy, resin-filled branches. In some areas of Australia, campers are warned not to pitch tents under eucalyptus trees. read more
More Trees You Should Never Plant in Your Yard Mimosa (Albizia julibrissin) AKA: silk tree (sometimes confused with Acacia baileyana). Native to Japan, has lacy leaves and delicate, fluffy pink flowers that bloom in summer. read more