A homemade anti-mildew (and it works!)

Mix baking soda and black soap in water.
Pour the solution into a spray bottle.
Spray directly onto the infected areas of the tomato plants.
3. Choose resistant tomato varieties
Another effective strategy is to plant disease-resistant tomato varieties. Each year, keep about 12 varieties and test 8 new ones to find the ones that resist best without treatment.

By adjusting varieties to suit your region, you may discover tomatoes that produce well, require little water, and are disease resistant.

Anticipating future attacks
Downy mildew is a tenacious fungus that can return in the fall. Even with natural treatments and choosing resistant varieties, it is almost inevitable that some plants will be affected at some point. That is why it is important to take a proactive approach by regularly monitoring your plants and intervening at the first signs.

By following these methods, you can significantly reduce damage caused by late blight and enjoy beautiful tomato harvests throughout the season.