How to prevent water stains on stone outdoor flower boxes?

Water stains on stone outdoor flower boxes can be unsightly and difficult to remove. To prevent them, start by applying a high-quality stone sealer to create a protective barrier against moisture. Regularly clean the surface with a pH-neutral cleaner to avoid mineral buildup. Ensure proper drainage in the flower box to prevent standing water, which causes stains. For existing stains, use a mixture of water and white vinegar or a specialized stone cleaner. Finally, consider placing a liner inside the box to minimize direct contact between soil and stone. These steps will help maintain the natural beauty of your stone flower boxes.