Leaf disease ID?

DannyD · May 31, 2016

Put tomatoes outside to start hardening them off and they've started showing the brown/tan spots shown below. Also our peppers have a slightly different discoloration mostly on the edges of the leaves (also pictured). Not sure if this is sunscald, bacterial leaf spot, speck or some other malady. Please help!

In case this is relevant, I already had a spider mite issue with these plants. Hit them with soapy water and Neem oil every few days for two weeks and the mites seemed to go away but the plants also showed a little wear.

DannyD · May 31, 2016

sorry the rest of the pics didn't post the first time

Lindalana · June 2, 2016

Do not know last pic but I would assume your treatments damaged leaves.

Dewayne mater · June 3, 2016

I'm not an expert, but have seen similar conditions through the years and would guess a combination of sun scald, a mold of some type (which means it is much more wide spread than it appears in my experience) something bacterial like bacterial speck and/or fungal like early blight.

Where you are, this time of year, I would say the presence of spider mites is a sign of your plants being under stress from other things (disease) as spider mites often move in to finish off a stressed plants.

I would remove affected foliage and treat for disease. Many options are out there in prior posts. Good luck.

Dewayne mater

ginger2778 · June 3, 2016

The tomatoes look like they have a burn from neem oil in the sun . I have gotten this even though I sprayed with the neem late afternoon the day before. It is just that residual oil may be left to fry some leaves.
Your peppers just look like lack of water is happening. That's because the tips and edges are where they are damaged, that is a tell tale sign of not enough water, or fertilizer burn, one or the other. Heres the definite tell about which; The spider mites are very telling, they thrive in dry conditions.

I am sure others will differ, but that's my diagnosis based on your plant's medical history.

Lindalana · June 4, 2016

Me- I judge by what I have done to the plant first. Lets say I did foliar spray and next day plants got their burned edges- this is not fungal or bacterial but results of my own doing. Now if there is nothing you have done but leaves are suddenly wilting etc... look out for outside help...
Another thing is to know what is widespread in your particular area and what your neigbors are having as well. Your local extension could be helpful. I.e. in my zone at this time we most likely to have early blight, then Septoria comes along. All others are less common. I do quite a bit of foliar sprays so yep, have caused similar damage to my leaves too. Live and learn.

brownrexx · June 5, 2016

Neem oil every few days sounds like a lot. Just because it is organically approved does not mean that it won't hurt the plants when used in excess.

June 2, 2016	#3
Lindalana Tomatovillian™ Join Date: Oct 2013 Location: Chicago IL Posts: 857	Do not know last pic but I would assume your treatments damaged leaves.

June 3, 2016	#4
Dewayne mater Tomatovillian™ Join Date: May 2008 Location: DFW, Texas Posts: 1,212	I'm not an expert, but have seen similar conditions through the years and would guess a combination of sun scald, a mold of some type (which means it is much more wide spread than it appears in my experience) something bacterial like bacterial speck and/or fungal like early blight. Where you are, this time of year, I would say the presence of spider mites is a sign of your plants being under stress from other things (disease) as spider mites often move in to finish off a stressed plants. I would remove affected foliage and treat for disease. Many options are out there in prior posts. Good luck. Dewayne mater

June 3, 2016	#5
ginger2778 Tomatovillian™ Join Date: Aug 2011 Location: Plantation, Florida zone 10 Posts: 9,283	The tomatoes look like they have a burn from neem oil in the sun . I have gotten this even though I sprayed with the neem late afternoon the day before. It is just that residual oil may be left to fry some leaves. Your peppers just look like lack of water is happening. That's because the tips and edges are where they are damaged, that is a tell tale sign of not enough water, or fertilizer burn, one or the other. Heres the definite tell about which; The spider mites are very telling, they thrive in dry conditions. I am sure others will differ, but that's my diagnosis based on your plant's medical history.

June 4, 2016	#6
Lindalana Tomatovillian™ Join Date: Oct 2013 Location: Chicago IL Posts: 857	Me- I judge by what I have done to the plant first. Lets say I did foliar spray and next day plants got their burned edges- this is not fungal or bacterial but results of my own doing. Now if there is nothing you have done but leaves are suddenly wilting etc... look out for outside help... Another thing is to know what is widespread in your particular area and what your neigbors are having as well. Your local extension could be helpful. I.e. in my zone at this time we most likely to have early blight, then Septoria comes along. All others are less common. I do quite a bit of foliar sprays so yep, have caused similar damage to my leaves too. Live and learn.

June 5, 2016	#7
brownrexx Tomatovillian™ Join Date: Feb 2016 Location: Southeastern PA Posts: 1,420	Neem oil every few days sounds like a lot. Just because it is organically approved does not mean that it won't hurt the plants when used in excess.