Honestly there are any number of possible causes for what you describe. They range from just plant stress due to the weather to a serious disease of some sort. Without seeing at least a picture of the plants and without much more info it's impossible to tell.

What variety, in ground or in containers, how old, what is your feeding and watering regimen, if in containers what size and filled with what, any weed killer sprayed in the area, etc., etc.?

Dave

Here are the pictures on a facebook album. I had a few technical difficulties getting the pictures, hence the delay.

I planted the tomatoes in the first half of April. I have Early Girls, Big Boys and a grape. The tomatoes are in a raised bed that has been enriched with well rotted leaves. They are mulched with about 1.5 inches of well aged pine bark. No other fertilizer was used at planting but one application of Miracle Grow was used about 10 days after planting. During the first week of May, the leaves started to curl up into little knots. The newer leaves are the worst affected. We were gone at this time, and came home to find the tomatoes this way. At that time I dusted with a little Sevin, thinking it was an insect problem and then side dressed with a little Plantone and rock phosphate. Other than that there have been no feeding or chemicals applied.

The weather has been quite cold and damp since about April 20. There have been multiple days with the high in the low 50s and some days with lows in the high 30s. There has not been a frost since the tomatoes were put in. The weather seems to be moderating at last and we are getting more seasonal temperatures, in the 70s and 80s but still a great deal of rain.

That is about all the information I can provide. I hope it is sufficient for you to provide some idea of the problem. Thank you for your assistance.

Here is a link that might be useful: Facebook album

Among the number of possible reason is herbicide damage. So when was weed killer used either at your place or nearby?

They look like my plants looked a couple of years ago when there was herbicide damage from my neighbors (in-laws). Assuming that is what it is, new growth should be normal, unless it again comes in contact with the herbicide.

I wish the herbicide was the answer but there has been no herbicides used anywhere in the area that I know of. Certainly we haven't used any and there is a 6 foot privacy fence between me and the neighbors so it seems unlikely we could get herbicide from them.

How long have you been growing in this particular bed? Ami

Polkamom, I'm voting for herbicide damage. Unfortunately, a privacy fence won't prevent herbicide drift, and it doesn't even have to be next door. A neighbor a few doors away may have had their yard treated by one of the common yard maintainence companies, who can be quite agressive in spraying, filling the air with drifting spray. A little breeze, and bingo, your sensitive tomatoes show damage...

I too have a similar problem tight knot curl on the tops of tomato plants , brandywine and supersteak. Two other plants cherry toms are absolutely beautiful. No herbicides have been used and no chemicals. We have had a very coolish may with temps in 50s and nights in 40s.. All my plants were treated the same as far as inground nutrients all organic--- So what gives. If you see something I dont let me know.

In the past I have had bouts occasionally with "rolled" leaves. With research I determined that it was physical stress due to soggy soil. However, you really have major deformation. Not really sure....but herbicide damage might not be your answer. Get a cheap moisture meter (they work) and monitor your soil moisture. Keep us posted...

fireduck
Are you thinking a lack of water or overwater. Its a bit hard for me to think over watering as the cherry plant look great and I basically treat all my plants the same.