In the past month, 11 young trees of different varieties were planted in the North Dunedin reserve, which is bordered by Cumberland, Castle and Albany Sts.
As of yesterday, only one was left standing, council parks and reserves team leader Martin Thompson said.
The rest had been snapped off or pulled out of the ground.
The council had made several attempts to establish trees in the reserve, but all efforts were foiled by vandals.
The trees would not be re-planted at this stage, but that decision might be reviewed later in the year, Mr Thompson said.
