It's time to expand my garden. Due to rising material costs, I am looking at cinder blocks. I can make 2 parallel 50 ft by 4 ft runs 24 inches deep wit a 3ft pebble path between them. Ok, does anyone see an issue with the concrete blocks. They allow drainage, provide an insulating barrier, and give the permanence I'm looking for. But, I am commonly overlooking details in these matters. #activity source