Vandals have chopped the tops off several trees planted at the southern entrance to Masterton.
Masterton District Council originally planted 24 Prunus serrula cherry trees on the side of the state highway, which were replaced in 2011 with 22 London plane trees - or Planus orientalus plane trees.
More than a dozen trees have been damaged between the Gateway Motel and Copthorne at Solway.
One motorist, who didn't want to be identified, said he was disgusted with the vandals' actions.
"Someone has snapped them all off. It's a real shame. It's just crazy why someone would do this. It was looking so nice along there. It's just so disappointing," he said.