A picture is worth a thousand words! Pretty please?

Linda

Is it possible that it is too much sun?? Seems totally bizarre to say that about a tomato plant... but my roommate is growing tomatoes on the other side of the patio and has a similar issue with her plants except for the ones on the far left that receive about 1.5-2 hours less afternoon sun......

close pic of the one receiving afternoon shade :

I also have another tomato plant that receives about 2 hours less sun that is very green and bushy...

Tomato leaf roll is a physical response of the plants to stress. The greater the amount of roll the more the stress. That stress can be caused by several factors - inconsistent soil moisture levels, excess nitrogen fertilizer, heavy pruning, pests, etc. etc.

But these are very strange appearing plants - overly tall for the very limited amount of leaf and side shoot development they have. They appear thin, sparse for want of a better word. Have you been heavily pruning them? That would explain their unusual appearance and could likely be the cause of the leaf roll as well.

Dave

I've got that problem too! I have mortgage lifter tomatoes plants, and they are really leggy even though they get full sun.

I pruned them heavily at the bottom about 2 weeks ago because there was a straight week of rain and a ton of gnats and aphids accumulating on those leaves and they were yellowing and curling.... since then i havent been having those pests (i also used a neem spray for maintenance). Of course, after i pruned at the bottom, i had a squirrel issue for a bit, every morning it was digging around in it. But i put some.2x4s at the base.and he hasnt been back.

My tomato plants have curling, twisting twisting, new leaves coming in rolled up and skinny and even now my dahlia and basil leaves too

Basil

Tomato

Tomatoes removed temporarily to change or protect soil virus?

Dahlia

HELP!! diagnosis? treatment?

You might have had better luck starting your own thread instead of finding an old one with a different subject.

Your tomato pictures look as if they have been subjected to herbicide drift and there's not much that can be done to save them. If you don't think it is herbicide drift, perhaps there was some herbicide in the potting mixture that you used.

digdirt2's (RIP!) answer below is correct for the OP. If your plant is being exposed to too much sun, too hot temperatures, too much wind, or a lack of water, the leaves will curl up to protect themselves. This is normal.

Not clear that this is the same problem as the person has who resurrected this old thread, though.

Thank you all. These are on my deck on Orcas Island in northern Washington state and which has been cool and cloudy, some rain... residential.. no herbicides... unless it was in the cow manure we bought on the island. It has the southern exposure so gets good sun. It's been in the 50s 60s and sometimes 48 at night. Have grown many before and this is the first year it's been strange. Maybe in the manure? If so, how do we cure the soil mixed with the manure? So appreciate your response.

Agree that it looks like herbicide residue. Especially since the effects are seen in many plants. Persistent herbicides start to decay away in a month or so, but residuals may be present several years down the line. One strategy for removal is planting a cover crop, and then disposing of it.

How long with the cover crop before it’s safe?

Cover cropping is a tool to help remove herbicides. As to how long it takes, that depends a lot on the herbicide, how much of it there is, and what kind of cover crop you have. No easy answers.

You should do a bioassay. That's where you make up some pots of known clean, and suspect soil, and evaluate plant growth after a few weeks. That's how you confirm herbicide residue.

I used to live in the PNW, and I believe there are still endemic problems with clopyralid residues in manure and compost. That stuff is used regularly on wheat and hay fields there. Lots of hair getting pulled out up there about that among gardeners. Right now the EPA is considering stricter application guidelines.

https://puyallup.wsu.edu/soils/clopyralid/

Thank you i will replant the lesser harmed plants in new soil and treat pesticide soil mixed with manure with clover and leave for a year. sound possible for continued growth and soil treatment? or not?

I would suspect the cow manure. Some herbicides can pass right through the animals (with no harm to them) and contaminate the manure. To check, plant a bean in the manure and see what happens.