Tomato leaves turning black, curling

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fodder Whitman, MA Jun 13, 2009

in the center of this shot, you can see how the branch has almost snapped itself off. the leaves of a few of my plants are turning black, and curling. they are not dry, they're still moist to the touch. from what i've researched, it doesn't look like classic fusarium wilt, or bacterial canker, or other problems...i have not been able to pinpoint what it is. can anyone here help? are these plants doomed?

i'd like to add that we've had a lot of cloudy and rainy days lately. i doubt over-watering is the problem, but i wanted to mention it.

This message was edited Jun 13, 2009 10:32 AM

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fodder Whitman, MA Jun 13, 2009

i pulled this branch from a neighboring plant. maybe the beginnings of the same problem?
i didn't see this stuff 2-3 days ago, when we had a break in the rain, and i went out inspecting. i have found some aphids on the plants, but that doesn't look like aphid damage to me.

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kitchenshop Craig, CO(Zone 3b) Jun 13, 2009

There is a thread about yellow tomato leaves that has some good links to pictures of tomatoes. Maybe that will help you diagnose your problem.

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stephanietx Fort Worth, TX(Zone 8a) Jun 14, 2009

My first thought was spider mites. When we had such rainy, cloudy, humid days, I was battling them. Do you see any type of webbing or small almost invisible spider creatures?

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fodder Whitman, MA Jun 15, 2009

I have not seen any webbing, or small spiders, no. Then, i read somewhere, that there's a thin line between an insecticidal soap, and a plant killing herbicide...and i thought...
Weds, when i saw aphids had in fact found my tomato plants...wifey mixed up a solution of warm water and dish soap, which i sprayed on any plants i saw the aphids. Saturday, those plants looked like the ones in the photos. Could i be killing off my plants by using too much soap maybe? in trying to get rid of the aphids, am i doing more harm than good?? OUCH!
here i am trying to diagnose the problem...and maybe I AM the problem??? !!!

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stephanietx Fort Worth, TX(Zone 8a) Jun 15, 2009

When are you watering? If you're watering in the morning and the water stays on the leaves during the day, that could be causing them to burn. Spray either late at night (around dusk) or very, very, very early in the morning.

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IllinoisGarden4 Joliet, IL Jun 16, 2009

Depends on the soap
try useing a white bar soap water mix.
i wouldnt use dish soap

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