What is this?

barryla61 · July 24, 2012

Whatever it is, it has just about wiped these 2 plants out in just over a week

b54red · July 24, 2012

It is hard to tell but it looks like you might have spider mites; maybe some early blight and or fusarium wilt. I know that is not much help but you actually could have them all at the same time. You can cut a fairly large stem on one of the plants to check for fusarium. Inspect the underside of the leaves for spider mites or even whiteflies. Spider mites are very hard to see but will devastate plants in really hot weather. With early blight you can spray with the dilute bleach solution or cut off all the affected leaves and spray with a good fungicide like Daconil which will slow it down.

rsg2001 · July 24, 2012

I'm pretty sure it's EB perhaps with some heat stress added to it.

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July 24, 2012	#2
b54red Tomatovillian™ Join Date: Sep 2009 Location: Alabama Posts: 7,068	It is hard to tell but it looks like you might have spider mites; maybe some early blight and or fusarium wilt. I know that is not much help but you actually could have them all at the same time. You can cut a fairly large stem on one of the plants to check for fusarium. Inspect the underside of the leaves for spider mites or even whiteflies. Spider mites are very hard to see but will devastate plants in really hot weather. With early blight you can spray with the dilute bleach solution or cut off all the affected leaves and spray with a good fungicide like Daconil which will slow it down.

July 24, 2012	#3
rsg2001 Tomatovillian™ Join Date: Jun 2006 Location: New York Zone 6 Posts: 479	I'm pretty sure it's EB perhaps with some heat stress added to it.