If the temperatures are low, does that cause squash leaves to yellow? I put out healthy green squash and they started yellowing. I have fertilized with fish emulsion a few times, so I don't think it is a nitrogen issue and I don't see any bugs or mildew. The only thing that isn't quite right is that we had a slight cold snap for a couple of weeks. (meaning 60ish days and 45 nights)

Thank you so much!