Can you make a homemade weed killer which does not kill flowers?

Black plastic sheeting, clippers, hoes, landscape fabrics, matches, mowers, mulches, rakes, shovels, and water are do-it-yourself, homemade weed killers that do not harm dirt. Clippers, hoes, mowers, rakes, and shovels cut back or dig up weeds that cannot survive the constant stress of re-prioritizing life-sustaining activities from growth and reproduction to recovery from wounds. Weighted-down black plastic sheeting, landscape fabrics, and mulches smother weeds while matches lead to controlled burns and boiling water kills weeds on the spots.