I have a wood retaining wall made of 3x12 pressure-treated boards similar to the one pictured here.
The backside has MiraDrain and 3/4" drainage rock. I have an excess of earth to manage and one option I'm thinking of is to move it to the front side of the wall, approx. 12-18" high. There is also a consideration of putting fence boards on the front to make it more visually appealing.
What should I do to the front side of the wall regarding protection from rot (whether we add fence boards or not) to make sure it has a long life.
Weed blocking fabric?
Build 4-sided garden boxes, and put the fill dirt in there?
In California, no snow to worry about.