Baking Soda?

Thanks to the lovely people at Becker library for a great discussion about gardens. The question came up--what should I do about powdery mildew? Once a plant has it, it's difficult to eradicate. Of course, the best defense is prevention, meaning give plants plenty of air circulation. Sunlight helps, too. Also, plant varieties that are resistant. An alternative is homemade baking soda spray. With any concoction, test first. Really. According to OrganicGardening.com, "Spraying leaves with baking soda (1 teaspoon in 1 quart water) raises the pH, creating an in hospitable environment for powedery mildew." Good luck!

P. S. The posts here have been slow lately due to a long vacation and a nasty virus.