How to prevent moss growth on granite outdoor flower boxes?

Moss growth on granite outdoor flower boxes can be unsightly and damaging over time. To prevent moss, start by ensuring proper drainage to avoid excess moisture, as moss thrives in damp conditions. Regularly clean the granite surface with a mixture of water and mild detergent, or use a vinegar solution for a natural approach. Applying a sealant to the granite can also create a protective barrier against moss. Trim nearby foliage to increase sunlight exposure, as moss prefers shaded areas. For persistent moss, consider using a commercial moss killer, but ensure it’s safe for surrounding plants. Consistent maintenance and these simple steps will keep your granite flower boxes moss-free and looking pristine.