Problem

The sunflowers are starting to bow there heads and sway drunkenly in the breeze as they begin to go to seed.

The rest of the veg garden is doing OK though i got a problem, leaves on my squashes have developed powdery mildew so I'm going to try spraying with bicarbonate of soda to see if it makes any difference.

I hope this mould doesn't affect the squash, it doesn't appear to be on the actual fruit, just the leaves. I feel disappointed because I really thought i had looked after them well. Has anyone else got this problem? I would really appreciate any tips or advice.

Just googled and have decided to use milk to try and eradicate it as I ain't no baking soda.