I plan on using some of these drainage bricks to build a retaining wall.
The installation of the drainage bricks recommends that a drainage layer is used to route the water away from the base of the inner wall.
I am thinking to lay a very wide drainage layer, however my concern is that I "Dry Up" my garden.
is it possible for me to over-drain my garden, whereby any moisture absorbed into the ground is routed away too quickly?
is there any drainage guide which i can apply?