Mauao will be closed to all visitors from 5am to 5pm this Friday.
Tauranga City Council said this was to ensure public safety during aerial weed control.
"During this time helicopters will be used, weather permitting, to allow for effective spot spraying of invasive Pampas grass in difficult to reach parts of the Maunga."
Security and barriers will be in place at Mauao entrances to advise visitors of the closure.
