Line it with landscape fabric overlapped 12 inches at the seams add a 6 inch layer of inch stone and tamp it.
Making a rock wall with concrete.
A rock wall can be a long lasting distinctive addition to any garden or yard.
The stone walls i describe here are close to maintenance free.
A method even beginners can tackle sucessfully to build rock walls using concrete foundations mortar and formwork.
Big rocks go on the bottom.
Combine dry ingredients for mortar mix.
Add all the ingredients to a wheelbarrow or concrete mixer depending on the size of rock you are creating and amount of mortar you are mixing.
If the groove caves in add more dry ingredients.
Then make a groove in it with the side of the shovel.
If those are the rocks you have buy some sheets of plywood build a simple but strong form to support same and make a concrete rock wall.
Slope the wall in a little as it gets taller 1 2 inches per foot of height is the minimum.
Dig a trench that s below the frost line and 2 feet wider than the wall.
To know when your concrete is ready use the back of a shovel to smooth the surface.
Mix 3 parts sand with 1 part portland cement.
Though it can be hard work building a rock wall is well worth the effort whether it will be used as a retaining wall foundation or garden fence.
How to build a rock wall 1.
A 4 foot wall made of round 4 inch rocks is a bad joke.
If you can t make a distinct groove add more water.
Once built you ll have a rock solid retaining wall without all the heavy mortar lines.
If the surface stays smooth and the sides of the groove hold their shape your concrete is ready.
Dry stacking with no mortar is the quickest method to build a rock wall but it won t last.
Prepare the footing photo by russell kaye.
Some good tips about making rock walls that will help build your confidence.