keeping squash going through the heat
I had considerable success with butternut squash this year. Got a half-dozen big fruit out of just two or three plants. Due to their natural resistance, with a little help from an occasional dusting with Carbaryl, I managed to keep the vine borers at bay. But in the last few weeks, hit with 103+ temps, the plants just faded, even though I watered them about every other day, and even gave them some shade. The symptoms looked like borers, but I didn't see any burrows.
What's the strategy for seeing squash through the hottest times of the year? I've seen people suggest watering every day, which seems a bit excessive.