I will not bring pets to the garden. I understand that neither the garden group nor owners of the land are responsible for my actions. Troubleshooting Vandalism is a common fear among community gardeners. However, the fear tends to be much greater than the actual incidence. Let people know to whom the garden belongs and that it is a neighborhood project.
Fences can be of almost any material.
They serve as much to mark possession of a property as to prevent entry, since nothing short of razor-wire and landmines will keep a determined vandal from getting in. Short picket fences or turkeywire will keep out dogs and honest people. Create a shady meeting area in the garden and spend time there. Invite everyone in the neighborhood to participate from the very beginning. Persons excluded from the garden are potential vandals.