We had this patio put in a couple years ago. Reflecting now it should of been smaller and because of the grade of the yard at the back the edge is quite high. And on the onenside the patio stones are drooping down. Solutions to fix? Should we put in soil around the edge and plant a ground cover or garden? Or will that make the sloping worse? We have lots of big rocks on the property we could do some edging? Looking for some ideas. Thank you. Location is south eastern Ontario Canada.