Here's a question I posted in Texas Gardening, but haven't gotten an answer to.

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 they were well mulched, 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, and cukes for that matter, through the hottest times of the year in the hottest parts of the country? I've seen people suggest watering every day, which seems a bit excessive.

In Central Texas we get several summer weeks over 100F, and several months with highs in the 90s and lows in the mid 70s. Y'all up north need not respond.