High winds have torn a branch weighing more than a tonne from a tree at Stella Bull Park in Greytown.
Helen McNaught, South Wairarapa District Council property facilities officer, said the branch was sent crashing to the ground some time in the past two days and had been only partially ripped from the 25m-tall robinia pseudoacacia or Black Locust tree.
The branch had fallen at a right angle across a commemorative park bench near the foot of the tree, she said, and it was a "good thing no one was on the seat at the time".
Mrs McNaught said the council contracts an arborist to tend to the "historic and special" trees in Greytown, which on July 3, 1890, became the first town in New Zealand to celebrate Arbor Day.
Smaller branches from other trees were strewn throughout the park and the arborist told Mrs McNaught large fallen branches would be chainsawed and removed in the next few days.