Q.What Is The Cause Of Tomato Wilt?
Two of my tomatoes were very healthy and then just wilted down in one day Have been watered well and fertilized .
Certified GKH Gardening Expert
Overwatering can cause these symptoms, but more likely, I suspect mole, vole, or groundhog damage.
Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/pests/animals/mole-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/animals/vole-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/animals/get-rid-groundhogs.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm