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Oops. You're right. Here's the picture.

Sorry but IMO that isn't "blight" - none of the 3 forms. What was the diagnosis of "blight" based on?

Those symptoms appear much more bacterial in nature, not fungal - Bacterial Canker and/or Bacterial Spot. And if i am correct then it is a losing situation, more so than any of the various blights would be. So i hope I am wrong. While copper sprays will help protect any non-infected plants it won't do anything for those already infected.

Check out the link below and pull up some of the many pics available on the web of the bacterial diseases to compare to your plants.

Can you take a sample to your local county ag extension office for a dx?

Dave

cornell.edu/factsheets/Tomato_Bacterial Diseases

Oh no, looking at pictures of that I think you're right. I thought that brown spots with yellowing that spread like that was blight. I'm going to take some leaves into the ag office and hopefully they'll be able to help me out. Thank you.

Did you mulch last / this year?

Did you fungicide last / this year from DAY ONE ?

I probably did it wrong :( I just pulled back the weed fabric that I had used for planting last year, put down a layer of compost, put my seedlings (started indoors from some from the same seeds that I used last year, now I'm thinking that maybe they're contaminated) in and pulled the weed fabric back over them. They're watered every other day with a drip hose for 20 minutes every other day. I didn't start spraying till last week, when I noticed the damage.

<They're watered every other day with a drip hose for 20 minutes every other day. I didn't start spraying till last week, when I noticed the damage.>

All the other issues aside, please don't do that. That is called shallow watering and only creates shallow rooted, water dependent plants that never thrive. 1-1 1/2 inches of water per week delivered slowly at one time per week is more than enough in 9.9 out of 10 cases. Plants will not benefit from frequent shallow watering for brief periods of time under any conditions.

Dave