Currently, I have a planting box that was created using wall stones (Home depot type) that has dimensions of about 5ft x 6ft at about 3ft in height. Now, I want to add onto this but not as deep. It will be a raised box to equal the height of the main box.
So, this may be unconventional when it comes to raised beds. Using the same wall stones, the new extension will be 2ft x 3ft approximately 1 ½ ft in height raise about a foot or so off the ground on either cinder blocks or something else to support the weight.
My question is on possible flooring material that will support the same type of wall stones on two sides as well as planting dirt. I found a grate that will more than support the weight, but flooring material will be needed on top of the grate to retain the soil. Assumption is a wood floor but not sure what type of wood to use or in what dimensions i.e... would it be a plywood material or slat type board. I’m worried about wood rot due to wet soil and water. I understand eventually rot will happen. Later is better than sooner. Also, would it be possible to only have a wooden floor with proper support to place the stones and dirt on and forgo the grate?