Just curious as to what is the steepest grade you would recommend for a mulch install. customer of mine wants a steep embankment mulched w/ weed barrier fabric install. I dont like the idea. my thinking is a good rain would wash it all downhill. the size of the area is approx. 110 feet by 20 feet wide and is at least a 45 degree angle. I was thinking of possibly some colored stone or some low growing shrubs. Also i thought tiered block wall would be perfect but too much $$$ for him. Thank You!