That's some serious curling. I had some curling once in extreme heat, but not that bad. Interesting your neighbor has it too. Maybe a disease of some sort. Hopefully someone will ID the problem.

You have drainage holes in those tubs, I trust?

tj

No, my neighbor's tomato plants do not have it. And yes, I have drainage holes in the bottom of the tub.

Herbicide damage? https://www.google.ca/search?q=tomato+herbicide+damage&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiig4O18fjiAhVMj54KHeyXCDoQ_AUIECgB&biw=1525&bih=672

You know, windberry, I was thinking about that. I did spray some selective herbicide in that area, but I thought I was pretty careful about avoiding the tomatoes. Maybe a little bit drifted in that direction. Do you think it will recover from that if that what it is?

I have noticed more people than usual posting about curling tomato leaves this spring, from locations all across the country where there has been heavy rain. I also noticed that i had the same issue on a few of the branches of an heirloom beefsteak growing in my garden. My plant has a tendency to have this issue on new growth, but as the branches grow, the leaves enlarge and straighten out. I wonder - wild speculation - if this is some kind of cultural reaction to the rainy conditions.

"Do you think it will recover from that if that what it is?"

Sorry, I really don't know.

Well, I already had it narrowed down to herbicide damage or all the rain. My friend's tomato plants are in a sheltered area that hasn't got as much of the rain. I guess I'll have to wait until it dries out to know for sure whether the curling leaves are from the excessive rain or herbicide damage.

Any follow up if the plant survived? I agree with Gorbelly's advice. I would add that last month I purchased some plants with deformed new leaves and wilting. I suspected neglect/lack of fertilizer but it was clearly herbicide damage. I transplanted them from their seedling cups into 5 gallon containers. After a few weeks of regular watering the plants looks healthy and indistinguishable from my other container tomatoes :)

Herbicide damage and was my first thought but then I remembered reading curled tomato leaves are a symptom from a copper deficiency so I looked it up.

"The copper-deficient leaves are curled, and their petioles bend downward. Copper deficiency may be expressed as a light overall chlorosis along with the permanent loss of turgor in the young leaves. Recently matured leaves show netted, green veining with areas bleaching to a whitish gray. Some leaves develop sunken necrotic spots and have a tendency to bend downward.

Correction Measure: Foliar spray of 0.5% CuSO4 twice at fortnightly interval."

It is rare, so I wondered if the rain washed copper out of the soil and I found copper isn't mobile, it doesn't move with water mass and strongly bonds to soil particles.

Can't be anything else but herbicide damage. Airborne or maybe composted lawn clippings treated with 2,4-D?

Well, the older leaves were still curled, but the new emerging leaves are not curled. The rain stopped a little over a week ago. I have tomatoes on my vines now, and I removed some of the older curled leaves. I was even able to pick a red tomato today. It was delicious. Next year I will be more careful when using any herbicides and perhaps plant my tomatoes as far from the sprayed area as possible just in case that was what did it. Next year we probably won't get as much rain dumped on us all at once either, and my tomatoes will look great again. So, I probably won't ever know what really caused the curling leaves. Thanks for all the helpful information and advice. I appreciate it. May your gardens always be bountiful!

There is a disease called Curly Leaf Virus or Curly Top that affects tomatoes. I was just visting my sister in NM and she said there is a new invasive pest, the Beet Leaf Hopper, a light gray bug about 1/8-1/4 long, that carries the virus. Google Images if you want a look. It is spreading from the TX Gulf Coast, originally from Asia.