OK, so I have given up on actually harvesting any squashes this year, but what is going on here?? I have pulled out all but one of the squash vines because they all looked very similar to this one.
The leaves look almost like there's powdery mildew or some other kind of fungus on them, and they've yellowed and withered. This is (I believe) Trombetta D'Albenga, but all the other varieties suffered the same fate. This vine has stayed around this long because it actually began producing squash, but before they suddenly rotted before maturing.
So my question is, is this an infestation like vine borer or some other bug? I haven't seen any bugs crawling around but with all my traveling this summer I definitely could have missed some evidence. Or, is this a disease of some kind that will restrict my squash growing for the next few years?
If you have any idea of the identity and whereabouts of this criminal, please leave your information in a comment! And if this is a disease, should I not grow squashes/cucumbers for three years? Help!!