I started a flower garden last year. I filled in the vacant areas with stones, but I didn’t lay weed-protecting mesh. Now grass and weeds are invading the areas where the rocks are. What can I do now to prevent the grass and weeds from coming through. I can’t use weed killers for fear of endangering my plants. Someone told me to use sand.

The first step in solving your dilemma is to pull out the existing weeds. Once that is accomplished, the stones will need to be removed. In order to prevent the reappearance of weeds and grass next year, you will need to purchase a weed mat or weed fabric. This material will allow for air circulation and moisture movement, but should aid in keeping unwanted weeds to a minimum. The addition of sand is not advised, as the weeds will eventually grow through it or on it anyhow. Once the mat is in place, you can replace your stones to finish out your landscaping.