I have found engaging the students in creating the rules for the garden is key. They decide, I approve, and then they take a vote. They create a rules board at the entrance of the garden. They are then more keen to enforce the rules among themselves. I also explain the whys behind the rules, such not stepping in the beds is so we don't crush the homes of decomposers living there. How would they like it if a huge foot stepped on THEIR home? : ) Students also create the consequences for breaking the rules, such as having to pull 10 weeds per infraction, for example. I try to keep things light in the garden with rules and consequences. I want the garden to be a very happy place. If I have a very defiant student (rare) I just have another student escort them to the principal and remove the privilege of being outside in the garden.
I also go over the rules with each class every time before we even step foot in the garden.
Would love to hear what you all do
Emily