"It's really sad to see a landscape of his destroyed in New York City, cultural capital, without due discussion," Smith said.
A landscape architect familiar with the matter who asked to remain anonymous said the targeted trees were stressed because of a lack of water.
"You don't destroy them," the source said. "You water them."
When you talk about all the pomp and circumstance the mayor is giving to planting all these trees and you hear something like this - it doesn't jibe," she said.
Mark-Viverito also took the Parks Department to task, saying it "has a habit and a way of operating where it really feels it's above having any accountability to anyone."
"That's a massacre," Croft said.