Have you been spraying any herbicides? Even if you are very careful, the slightest wind can carry unseen vapors onto other plants. Try not to spray any herbicides around your garden.

thanks for your reply catman.

The only thing I have done is spread some Organic Slug Bait Pellets around the outside base of the raised beds. The raised beds are made with 2*8 with 3/4 plywood bottom. There are a lot of slugs around so I have been putting the bait out once a week, but they are pellets not powder.

I deep watered 4 days ago, and the soil feels moist about an inch below the surface. I have held off watering as I read this (over watering) could be the problem.

We might get rain tomorrow, should I just wait or try more water.

Thanks in advance!

It is called tomato leaf roll - use 'leaf roll' as the search term here to read many posts on it or Google 'tomato leaf roll'.

It is a physiological response from the plant to stress - usually too much water. It poses no threat to the plants and goes away once the source of stress is removed. Slug bait doesn't cause it and granular ferts wouldn't have had time to cause it yet either - so suspect excessive water and/or poor draining soil.

Dave

PS: Great pics but next time please reduce the size and/or number of pics - size especially as even with DSL these take far too long to load. GW has a size limit of 600x400 when possible for loading purposes. Thanks. ;)

Will do Dave, and thank you for confirming what I had been praying would be the issue.

Agree with dave, otherwise those plants are looking pretty good.

It is a physiological response from the plant to stress - usually too much water.

So, leaf curl would be on all tomato plants grown hydroponically in water (as opposed to a substrate like rock wool)? And, if not, how is ~100% water not too much?

struwwelpeter

The difference is in the oxygenation available to the plant roots. When plants are grown hydroponically in water, plenty of oxygen is also carried along with the nutrients. When plants are grown in soil and are overwatered, there is a perched water table (PWT) that just sits there and smothers the roots when they extend that far down into the soil. And then they rot because there's no oxygen being infused into the PWT.

From what I understand, plenty of drainage provides for some oxygen flow between the drainage holes and the surface. Even better, however, is to provide a wick through the drainage hole and let the perched water table run out of the container via the wick. That way, oxygen can infuse the entire soil block and the roots can "breathe" no matter at what level they are.

But for seedlings that will be transplanted, it's sufficient to provide good drainage and not to overwater. They get enough root oxygen that way to survive until they go out into the earth or a container that provides for oxygen flow to the roots.