Help! Trees on retaining wall step?
I have retaining walls that wrap around the house. The attached picture shows the side yard retaining walls, each step being 3.5 feet in height. The step between the walls is 4 feet deep.
The HOA is forcing me to plant a screen of trees (on the level between the walls) to cover up a shed that is on the higher retaining wall (not shown in the picture, left side of retaining wall). The shed is probably ~8-9 feet high.
Any suggestions on something I can plant (preferably evergreen, where the rosemary plants are now) on the step of the retaining wall that will grow to be ~12 feet to obstruct the view of the shed (from the street)?
I'm in the Bay Area, California 9-10 Zone. Thanks for the help!