Wood fences deal with Mother Nature's wrath on a daily basis and it can begin to show on your fence. The moisture that is omnipresent outdoors can cause mildew to grow on a variety of surfaces such as your wood fence. If not removed, the mildew will continue to grow and possibly leave permanent stains. Fortunately, you can remove the mildew and restore the look of your wood fence with a few common household items.
Rinse the surface dirt and dust off the wood fence with a water hose.
Fill a bucket with 1 gallon warm water and 1 cup oxygen bleach. Oxygen bleach is the safer alternative to chlorine bleach. It will kill mildew and mold without discoloring surfaces or harming vegetation. Mix the contents together with a spoon until the oxygen bleach has dissolved.
Saturate a soft-bristled scrub brush into the mixture. Begin scrubbing the mildew -- as well as the surrounding area on the wood fence -- with the saturated scrub brush. Scrub in a back-and-forth motion until you have removed all traces of the mildew.
Let the mixture sit on the wood fence for 10 minutes before rinsing the fence clean with a water hose. Repeat the process as needed. Let the wood fence dry completely.
Apply a thin layer of wood sealer to the fence to prevent future mold and mildew growth.