Every year my wife's gardening effort gets taken by the squirrels, bunnies, deer, and birds. This maximum security garden enclosure ought to do the trick.
Used T-connectors to make a hinge on vertical EMT driven into the ground. My wife can get into the Strawberry prison, but the critters can't.
Modified the chop saw to make quick work of the EMT cuts (we have 8 enclosures).