My yard has beatiful, lush bermuda grass but now, of course, I don't want it. I've heard and read that the best way to get the bermuda out of the way is to install concrete footings. Makes sense but I'm wondering if this option may work. Any drawbacks anyone can think of?I'm thinking of digging up about 6" of the ground (in 4' x 6' plots), installing an inch of two of sand (for leveling) and laying down plywood as a base. Then building up the sides of the above ground bed with red cedar, about 18 to 24" tall (so it would be in ground about 6" and above ground 12 to 18").My question is how long do you think the plywood would break down and would this help keep out the bermuda surrounding the beds?
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