6 Answers

Wind, lack of water or blight

lots of things can cause this so trouble shoot : sign of lack of water would be the bottom leaves will turn yellow. To much water and the top growth will turn yellow.The wilt disease is called verticillium or fusarium and lives in the soil from year to year, so . Grow wilt resistant varieties,varieties with VF  after their name will tolerate verticillium or fusarium.VFN will also tolerate nematodes.FF resistant to race 1 and race 2 fusarium.T-tobacco mosaic virus,A-alternaria leaf spot, and L-septoria leaf spot. Change the growing location next year.Good Luck.

Howdy,

A tomato needs full sun, water either every day or every other day, must have good drainage, and fertilized once a month. Usually the lack of drainage from a pot with clogged holes or clay soil where water will not run off will cause wilt.

If you have done all the things mentioned your tomato plant will do great.