Barrier for hedge planting against a split rail fence
I am planning to put in an informal planting of hedging plants against a split rail fence. As the neighbor has grass with a lot of weeds growing against the fence, I am seeking suggestions on a barrier to limit the grass and weeds from coming over into the bed. Should I bury the black plastic edging against the fence?
Location is sun most of the day and the soil is clay and tends to retain moisture. I am thinking about using sweet olive bushes along with a companion plantings. Any opinions on sweet olive and companion planting (have not determined plants yet) Looking at about 50 or so feet in length and I have room for width.