I've had degrees of what you have but not quite that bad. In my case I think it was very hot sunny weather that made the leaves curl. Anyway, it cleared up after a while. BTW, other than the curling, your plants look healthy.

Yeah, I wouldn't worry to much, they usually will come out of it. My sungolds did the same, never caused any issues. You might need a bigger support system for the sungold though.

Thea: If it's the virus, I have to remove the plants ASAP, so I'm really hoping that isn't the problem.

Are you seeing or have you seen whiteflies around your plants recently?

The top photo looks borderline possible for TYLCV. #2 looks like PLR but with a kind of atypically rugose/puckered appearance of the leaves. The rest look mostly like PLR.

If you don't have active whitefly infestation, it may not be an emergency to pull the plants. In a lot of gardens, the symptoms of viruses show up after the pests that transmitted them have moved on. If you don't see any signs of whitefly, I would wait to see whether it's some other cause. Many gardeners who have had virus problems report that some of their plants get it, but just some. Reasons unknown. And by the time they discover the symptoms, it's too late to do much about it anyway.

Personally, I would monitor carefully, maybe put up some sticky cards to keep track of insect activity and pests that visit the plants.

I agree, the first and second picture are showing me more than just PLR. Look at those elongated stems in pic two... In pic one, the new growth is stunted and not only are the leaves curled, but the entire stem is contorted downward. I believe something else is going on also, in addition to PLR.

Thanks for all the great help. There is a small whitefly population in the garden. I guess the main reason I question that it's the virus is since I noticed the problem about three weeks ago, none of the leaves have any discoloration. But I suppose not all symptoms need to be present for it to be the virus.

Does anyone know how "contagious" it could be? If I deal with the whiteflies, I'm thinking I can leave the plants in place to monitor them, and plant more tomatoes in a different part of the garden. Or is it better to cut my losses, pull the plants, and start over while I still have a chance of getting new tomatoes starts going?

The key to distinguishing TYLC virus IS the yellowing, not the leag rolling. Further the curl seen with TYLC is just that, more of a curl from tip to stem rather than side to side roll. You have no yellowing and the leaves are rolled.

Given the several other possible causes of leaf roll as outlined in the article linked, are far more common the odds greatly favor it not being TYLC. Can it be ruled out completely at this point? No. But with no yellowing and the distinct roll of the leaves even herbicide drift is far more likely IMO than TYLC is. There are any number of environmental causes that can result in semi-stunted, stem-twisted, unusual coloring of the plants in the photo other than the semi-rare, regional TYLC. (Where are you located?)

That said, given their over-all poor appearance, if removing and replacing them is a viable option for you that is what I would do.

Dave

Thea: I noticed the problem about three weeks ago, none of the leaves have any discoloration.

Sorry--I didn't read this carefully on your original post. If this problem has been going on for 3 weeks and there isn't noticeable yellowing from the edges in, TYLCV is unlikely. I thought I could see some chlorosis at the edges and raised areas of leaves in the first pic, but perhaps that's a lighting issue with the photo. TYLCV is definitely present in California but less likely in NorCal from what I understand. This report says it's mostly in Imperial and Riverside counties way down south.

A touch of herbicide exposure, as Dave mentions, would have been my next guess.

I would at the very least get an additional or replacement Sungold. That Sungold looks pretty unhappy to me. Since this is a variety that's usually easy to find in big box stores and garden centers, that's the route I would personally take to lose the least time.

Update: I'm fairly certain this is an environmental/water issue. We had a bit of cooler weather and rain last week, and the top growth leaves unfurled and looked happy.
Since then it's been warm and dry and they started curling down again.
I think I need to increase my watering time and/or add some drip emitters to the tomatoes.

I also got a couple new tomatoes and planted them in a more protected location, so hopefully they'll do better.

Thanks for everyone's input! This has been incredibly helpful!!!

I've never seen water stress do all of the symptoms that your plants are showing. Keep us updated.

ncrealestateguy, I was just thinking some of those photos look more like Curly Top than TYLCV. But it really doesn't look like plain PLR to me.

Overly vegetative plants, serious fertilization.

Don't water in the evening, water less, cut the fertilizer for now.