The lawn at Cranmer Square in Christchurch will be replaced after anti-mandate protesters left the site earlier this week.
Christchurch City Council head of parks Andrew Rutledge said the type of grass there, and at Latimer Square, grew rapidly and required an excessive amount of maintenance.
"For some time we have been planning to replace it with a more suitable type of grass.
"We're going to take the opportunity now to remove the grass and sow new lawn that needs less upkeep."