Here’s the honest math: three to five days. Yes, only that long. But that’s enough time to plan a squash comeback.
After day five, the texture gets weepy. The flesh softens and starts smelling like wet cardboard. Don’t let that happen. You’re better than wet cardboard.
If you see any orange spots turning brown or fuzzy, chop them off immediately. Squash is a forgiving vegetable. It lets you trim it like a bad haircut.