Mitchel has a point. The strong corm growth can cause fence damage despite a barrier on your side of the fence. Personally, I think your neighbor is a #$%&*%& @##&@%$ but that's just my opinion (hope we never have a neighbor like that). Since the Bleep allowed you to have a tree person remove trees close to the fence, maybe he'd reluctantly agree to let someone put the root barrier on his side of the fence. That would help.
I grow timber bamboo But I installed a fool-proof, $1,500 Moso-rated 6-mil high-density polyurethane barrier, extending 3 feet into the ground, before I started. It's only common courtesy to consider neighbors first.
Youre an incredibly nice person to be handling it the way you have.... I wouldn't have been. Dont know much about weed killers & stuff but I wish you the best of luck
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