shaefins
Senior Member
Posts: 161
Joined: Wed Mar 24, 2010 7:17 pm
Location: Pittsburgh, 6A

Light colored spots on tomato leaves

I looked at everything online for early blight, and all those spots are dark. What my leaves are showing is light green spotting. I can't get a pic - my camera sucks. They're not bottom leaves, just leaves located around the plant.

Any ideas that I can google for pictures? Thanks!

ETA picture

[url=https://img243.imageshack.us/I/tomatoleafspots1.jpg/][img]https://img243.imageshack.us/img243/8243/tomatoleafspots1.th.jpg[/img][/url]

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TZ -OH6
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I've seen it before but forget the specifics...I'm pretty sure it is some sort of insect feeding pattern, either the beginning of leaf miner, or the beginning of something like baby caterpillars that can only chew through the bottom layer of the leaf, for now. I would look closely on the underside of the leaf for evidence of tiny wildlife, either bugs or little black specs that are bug droppings.

cynthia_h
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Location: El Cerrito, CA

What TZ said. I thought "leaf miners," but that's because they're around here a lot. Could also be, as stated, the early stages of some caterpillars.

Cynthia H.
Sunset Zone 17, USDA Zone 9

shaefins
Senior Member
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Joined: Wed Mar 24, 2010 7:17 pm
Location: Pittsburgh, 6A

After I figured out it wasn't blight, my thoughts went to leaf miners as well. They were all over my spinach, but this damage is quite different than it appeared on those.

I looked the leaves all over after work and again right now (as I was earwig hunting w/ my husband - ick!) and didn't notice any bugs. Will check again in the morning.

TZ -OH6
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If you don't find a hundred baby caterpillars it is probably something you can more or less forget about for now. Beet armyworms lay a ton of eggs all at once so you have to act fast when you see a herd of little ones, but most other similar pests lay a few eggs here and there so you can wait and pick off the larger ones by hand rather than going to the trouble of spraying. Your plant will probably lose part or all of the older lower leaves to common fungal diseases (or pruning to prevent it) anyway so a few bites out of them won't matter.

shaefins
Senior Member
Posts: 161
Joined: Wed Mar 24, 2010 7:17 pm
Location: Pittsburgh, 6A

I checked the leaves top and bottom this morning. No signs of any kind of insect or eggs. As a matter of fact, the under side of the leaves looked *perfect* - no signs of any damage at *all*. It's just that odd, light green to yellowish coloring on the top of the leaves (and only a handful, at that).

I agree that this probably isn't a big issue. However....do you think I should pull leaves w/ this coloring now? Rather than find out later it * was* something nefarious? :shock:

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applestar
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Location: Zone 6, NJ (3/M)4/E ~ 10/M(11/B)

I'm finding similar patterns on the sunflower leaves. Sometimes I find lacebugs.

TZ -OH6
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Joined: Fri Jul 25, 2008 7:27 pm
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Nefarious things are pretty well known, and mostly harmless things that leave marks are legion, so I would leave the leaves on to do their job making tomatoes grow bigger and taste better.



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