Hi, I just looked at 8 of my organic tomato plants that have been in the ground for a week and many of the leaves have these spots on them. Is this a fungus? How to treat! Thanks!
How are they doing now? This looks like bacterial speck to me. It is odd though that you would have it only 1 week after putting out your tomatoes. Did you grow them from seed or purchase starters? Has it been cool and wet where you are? Bacterial speck prefers those conditions.
This early in the season it would more likely be insect damage - maybe someone else can chime in with another opinion.
Yuup bacterial speck......... I can certainly relate....
I've got it, too. Hoping it will be slowed by upcoming sunnier and hotter weather.