I have a beautiful trailing squash Delica
going up a trellis and over the top of my garden shed at the moment. There are some lovely fruit developing at the moment. Although the top leaves are large and healthy I spotted a potential problem down below.
Powdery mildew is such a common thing at the end of a long, hot Summer but it has started early this year. I white, downy powder appears on the leaves and gradually weakens the plant over a long period of time as well as looking bad.
This powdery mildew is more common when the soil has been dry, and sappy new growth can be particularly susceptible. This is the first sign on the lower leaves of the plant so instead of using a commercial fungicide I decided to try one of the household remedies I have heard of.
Mix a solution of about 3 parts water to 1 part MILK. Spray on the leaves about once a week. Tidy up and discard any very badly affected leaves so as not to spread so many spores.
I have no idea whether this will work. I've been meaning to try one of these remedies. The other remedy I read about is using a teaspoon of baking soda in a quart of water and sprayed on leaves in this manner. Has anyone used a milk solution with any success?