How to Use Hydrogen Peroxide to Kill Powdery Mildew | Hunker
Although powdery mildew can be controlled quickly and effectively with commercial garden mildewcides, those interested in natural home remedies can mix their own mildewcide from over-the-counter hydrogen peroxide. Step 1 Remove any heavily infested plant foliage and stems that have wilted because of the powdery mildew. Cut off the foliage with ...