Verticillium wiped me out last year.
Check this tip from CB (to whom I’m eternally grateful :-)). The wilt has set in my early plants but they’re still chugging along producing fruit.
I started using CB’s tip on my later planting of heirlooms. Been hitting the weekly with baking soda and so far so good!
(BTW - get your baking soda at Aldi or Costco. Much cheaper than the “big chain” grocery stores)
http://www.freerepublic.com/focus/f-chat/3297232/posts?page=67#67