Acer negundo 'Pendulum', or weeping boxelder maple, is a weeping tree and a cultivar of Acer negundo, the boxelder maple.
It was first described by Fritz Kurt Alexander von Schwerin in 1896.
No trees are known to survive of this cultivar.
A weeping tree without a true leader and with perpendicular branches forming an umbrella shape.
When top grafted it looks similar to Fraxinus excelsior 'Pendula'.