Question
I want to build a dry-stacked stone raised planting bed, about 3' x 10' and 18" high, atop a lawn.  My main concern is getting a level base to start with.  There are a few tree roots along the area I have cleared for the bed.  Do I simply level the dirt as best I can and set the stones atop or do I need to lay some sand or gravel, even for this small project?  I want to do it properly so that it will last and not fall apart over the years.  How should I proceed?  (FYI - I live in KY.)  Thanks so much for any guidance.

Answer
Peggy,

Dry stacked walls, if done properly, can be a great asset to any landscape. I'm sure yours will look wonderful!!

The key to any retaining wall or bed wall is preparation!!! Even though your wall is relatively small, you will want to take extra time in the digging and leveling of the footing. For an 18" high wall, dig down 6" below your finished grade and at least 2 feet wider than the total width of the wall (1' on each side). Place gravel, roadbase, e-fill, etc. 2-3" and compact with a hand compactor, making sure this footing bed is completely level. Once compacted, place your stones in s running bond pattern (1 over 2 - 2 over 1, alternating joints) making sure that you get in some bigger stones that run the entire width of the wall. Do not place your biggest stones on the bottom and work up. Instead, intermingle the big stones with the smaller ones for stability. You can run a string line or simply use a large level (or both), but checking for level is crucial. Do this often. Your wall does not need a batter, so use your level to check for plumb as well (straight up and down).

These are just some minor tips. You can pick up books at the library or Book store with pictures and helpful tips. Just remember, prepping the footing is the key, so take your time and get it right.

Good luck with your project!! - BC