WANTED: weed inhibitor for patio paver fill sand
I have patios and walkways around my home. I live on acreage surrounded by large cedar trees and the materials falling from the forest have composted, turning the sand between the pavers into fertile black loam that weeds love. I have resorted to pulling up all the pavers and relaying them after removing all the composted sand. Does anyone have any ideas on what could be added and blended into the fill sand to inhibit the weeds?
Any suggestions would be much appreciated.