Tomato disease- wilt or blight?
I'm new to gardening and our area, Boulder zone 5, has been more humid that usual and am hearing that there is a lot of fungus attacking tomatoes (and my squash).
The leaves are getting brown spots- that are about the size of grapes, turning yellow and eventually dying, and progressing from bottom up.
I've gone to garden stores and called the extension office- not helpful at all. I've tried copper and green cure (a week ago and will try another application tonight), however it's not stopping the disease from spreading.
The plants are 4-6 ft tall with lots of fruit. The better boys and stupice have stopped producing new blossoms and are not growing past the 4ft. The cherries and romas are still producing flowers. It does not seem that it is affecting the fruit yet. I'm cutting away the diseased stems which are about 1/5 of the plants now. I don't know how much to keep cutting as it spreads.
Has anyone experienced this or know what to do?