I don't grow in containers but I believe one of the pros are likely to say there are signs of stress typical of growing in containers. It is very challenging to maintain a balance of moisture and nutrition as the plant gets mature.

I'm seconding the possibility of mites. Depending on your eyesight (mine is atrocious), you might need a magnifying glass to see them.

I also think it maybe mites, take a piece of white paper, hold it under the leaves and tap or shake the leaves on and see if anything is moving on the paper.

Yes, that looks like mite damage to me as well.

"Mites" means that you're screwed. If you ordered a good miticide online now, the plant will be dead by the time you get it. And, next year, I suggest that you take preventative measures because there is a 95% chance that they will be back.

You should be able to find something with pyrethrins or neem at a garden center or big box store right now. Whether or not the mites have resistance to it probably depends on species and your local population's characteristics, but it's worth a try. If you have food-grade diatomaceous earth already, that's also good, either alone or in addition. Trim off heavily affected foliage and immediately bag the prunings, seal, and throw away. Rinse all surfaces of the plant well with a strong stream of water--this physically washes off many mites and slows them down a bit--and apply the pyrethrin/neem/etc. Repeat at least every few days. Spray unaffected plants and move them away from the infested plants. You may not succeed in saving plants with the established infestations, but if you only have 4 plants and the affected plants have tomatoes on them, there's little to lose in trying to at least keep them going long enough to see whether you can get the fruit to maturity. Or, alternatively, bag and throw away the affected plants and spray unaffected plants. Regardless, do spray the unaffected plants. They're probably not unaffected, just in very early stages of infestation, and mites can spread on the wind, so simply moving them away is not enough on its own.

Interesting and quick resolution.

I have never experience spider mite problem so by lookin at the picture I suspected deficiency. But I am glad I did not comment.

I see spiders webbing all around my garden pathways buy luckily the are the good guys looking for flying insects.

Sey

There's usually a difference in quality between spider mite webbing and spider webbing. Spider mite webbing is more random and more "cottony" looking, for lack of a better word, and will often stretch across the leaf surface in a way that spider webbing won't. Webs + fine white interveinal speckling is almost always spider mites. Fine white interveinal speckling with leaves and stems drying up and getting covered with what looks like reddish brown "crud" from the bottom up usually = russet mites. I think both kinds of mites are pretty rare in areas that get a lot of rain. They apparently need a long stretch of hot and dry weather to spread on the wind. Neither mite types are that common in the NE, and I imagine they are rarer in the wet parts of WA. I have a friend who got spider mites, but she was growing on a 5th floor Brooklyn rooftop, which probably doesn't have the same number of insect predators around as plants at ground level, and it was during an unusually dry stretch of the summer. Otherwise, I don't hear about the mites much on outdoor plants in the NY/PA/NJ area. Around here, they're more of a problem on houseplants. I imagine greenhouse growers have problems with them from time to time.

Sounds about right. Hot and dry throughout the normal growing season here, and I can count on getting both types every year. Just a matter of when they decide to show up. Oddly it's been extremely hot this summer and so far I haven't seen hide nor hair of a mite, which normally would thrill me, but we got a thrip plague instead. Can't win for losing.

THANK YOU!!!!! It is totally spider mites There was only one web that I demolished and only found one large mite but it is enough evidence for me. Getting neem oil today and ordered some lady bugs just in case.

Spider mites are tiny, so small that they look like specks of dust to the naked eye. So I don't think what you found was a spider mite. Maybe it was a spider?

Use a magnifying glass to examine the undersides of the leaves. You'll see tons of the mites. By the time the damage to a plant gets as advanced as in your pics, there will be a significant infestation.