Mid Sussex District Council has suggested three sites for traveller camps including on Imberthorne Lane Nursery land.
Nursery owner Michael Dongray who has launched a petition against the proposal says it would be difficult to move his business. He says he has no grievances with travellers.
The council needs to find 34 traveller pitches by 2031 as part of national planning policy.
After a meeting on 23 July, a final decision could be made in May 2015.