I want to cover my garden with brown pebbles because nothing will grow in it no matter how hard I have tried and the whole area is polluted with weeds. I'm just a bit worried about the amount of pebbles I'd need. They cost about 120 euro per tonne so I don't want to order too many and be lumbered with the ones I have left over.
I have an area of 546 square feet to cover. I'll be levelling the ground and putting a plastic membrane on top of the clay and then the pebbles are going to go on top of the membrane. Has anyone any idea of how many square feet one tonne of pebbles should cover? Would I need 3 tonnes to do the whole job? I'd appreciate any help on this matter.