slope: use rubble to fill?

QuestionsHow to growSoilLawnsslope: use rubble to fill?
bill mccarthy asked 13 years ago

Hi Gerry, My 75sq m garden is 4 feet below the level of my patio area: there’s a retaining wall at the end of the patio… and a 4 foot drop to grass. many Thanks Bill

1 Answers

Gerry Daly Staff answered 3 years ago
Twelve inches of soil on top of a very free-draining base such as rubble will be very prone to dry out in summer. Grass will scorch easily and wear.

You could get rid of some rubble in this fashion but you would to have two feet of topsoil as a minimum.

Filling part of it and leaving a lesser change of level can be very attractive, so it is not essential to fill completely.