Eliminate Powdery Mildew: How to Identify, Prevent, and Control the Non-Toxic Fungus. Information on home remedies (baking powder, milk) and sprays.
Horsetail Broth Can Help Fight Powdery Mildew Naturally
Particularly dedicated hobby gardeners can also regularly spray endangered plants with a field horsetail broth as a preventive measure. This home remedy strengthens the cell walls of plants, but only if used regularly.
So that powdery mildew does not break out in the first place, balanced fertilization is very important. Drafts and dew formation should be prevented as far as possible, especially in greenhouse cultures. Some plants, such as the apple blossom, heather dream and wild rose varieties, are resistant to the pathogen. There are also differences in grapevines. European grapevines are generally very susceptible to powdery mildew, while many American wild species show resistance.
Chemically fighting powdery mildew? It's also organic with milk & baking powder
If an infestation with downy or powdery mildew is identified, action should be taken quickly. Downy mildew in particular can form many new spores on the affected leaves, which infect other parts of the plant. Fortunately, even after the outbreak, both diseases are treatable with biological means.
People differ on a treatment with milk. Some hobby gardeners swear by a spray treatment with milk (1 part milk: 9 parts water), but unfortunately other gardeners have had no success with it. In any case, the procedure won't harm your plants, so at least it can't hurt to try. A home remedy that is guaranteed to work when used correctly is baking soda. To be more precise, it is the component potassium hydrogen carbonate (synonym: potassium bicarbonate). To do this, prepare a spray mixture of one part baking powder and add 99 parts water (equivalent to 1% baking powder in water). This will then be the affectedPlant areas well sprayed. Better results may be obtained with pure potassium bicarbonate, since baking soda often contains a number of other substances. By the way, potassium hydrogen carbonate is a completely harmless substance.
Having problems with mildew on your roses? How to prevent and combat powdery mildew on roses is discussed in more detail in this article.