Although many fungal treatments are available in garden centers, I have found that it simply slows down the problem rather than solves it. Most are better used as a preventative measure; the real solution is to not allow mold to take control in the first place.
The trick to keeping this fungus layer under control is to be proactive and start a preventative action by using a few simple ingredients. The following recipe will increase the pH of the leaf surface, making it less inviting to the mold.
Whatever plant you want to protect, start a preventative treatment by spraying this homemade solution on the leaves once a week, making sure you spray enough: the liquid should start to run off the surface of the leaves to ensure good coverage.
A self-spray for powdery mildew
Spray on a cloudy day or at least avoid intense sun to prevent scorching.
you will need
- 1 liter of water
- 3 tablespoons baking soda
- 1 tablespoon vegetable oil
- Two drops of dishwashing liquid
method
Mix all the ingredients thoroughly in a small syringe and continue to stir the mixture while you spray. It worked well for me, so give it a try.
This article is updated with the latest information.