In honor of Punxsutawney Phil, and Groundhog Day, I think it's appropriate that we talk about how to repel groundhogs from gardens. Like rabbits and other small critters, ground hogs are destructive garden pests that use teeth scissor action to chew through fencing and eat flowers. What's worse, groundhogs dig and create underground trail systems that make it challenging for a gardener to stop. 

This is why gardeners need a PVC-coated metal rodent barrier fence in the garden. Metal fences are much stronger than plastic fences and are chew-proof. The PVC-coating is important not just to protect the fence from weather elements, but also to protect the fence from teeth marks. 

The above part of the fence can stand in heights of 2-3' foot tall. To further prevent the woodchucks from burrowing, dig a 1' x 1' foot trench around the base of the fence.