I just did the same thing, but I also used 3' wide chicken wire for the bottom 2', and buried about 10-12". We also have coons, ground hogs, squirrels, moles, and chipmunks to keep out, not to mention the deer. I haven't seen any evidence of anything getting inside the fence yet, but there isn't much food up yet. After looking at the 2x4" spacing on the fence, it looked big enough for a determined rabbit to get through to me.