We have a new-build house and the back garden is standard turf but I noticed that when digging a hole to transfer a rose, there was about a spade's length of clay top soil and underneath was builder's rubble, concrete and stones. I dug out as much as i could but it just goes down and down and now we can see why there is a big bank at the far end of the garden where once it used to be flat.
I don't think the worms will get through the rubble and the roots of plants will have to grow horizontally. I'd love to get a digger and remove the lot. Bar doing this, is there anything else i can do?
Thanks x