Advocates for cannabis reform say they have been asked to stay off the grass in Dunedin's Octagon.
The lower Octagon will be used on Saturday for J Day, described by reform group Norml as an event celebrating Kiwi cannabis culture and protesting against prohibition-era laws.
The upper Octagon lawn would be off-limits because the Dunedin City Council had asked the group to "stay off the grass", a press release from Dunedin Cannabis said.
It was to be used by another group, the council said.