If the new growth is fine, I'd say they had a severe phosphorus deficiency when they were younger, and something's corrected it now. The curled leaves and purple veins are typical of P deficiency, especially if it goes away when the plant is fed. Cold roots can induce deficiency even if the soil is otherwise rich.

So long as they have decent soil, and the soil temperature stays above 70 degrees, they should be fine. A relapse would show the same symptoms again, along with stunting and massive blossom drop. The one plant I had with it wasn't able to set a fruit, because the flowers were all malformed.

--Alison
who notes that young seedlings also get P deficiency because of small root systems and early spring chill.

Thanks.

Any type of fertilizer recommended for this type of problem? ... or Best fix? I prefer organic remedies :)

I had a similar problem with one plant that I planted out late. Before planting it was getting rootbound and stressed in a 16 ounce plastic cup. I planted it anyway and for a long time, although it grew, it didn't give up its purplish appearance and "veining".

I decided to give it a foliar drench of 1/2 strength miracle grow. I don't generally use miracle grow, and I'm not endorsing it here...I just have a bunch on hand since last year in Sept. CVS was selling big boxes for 99 cents each to clear the shelves. Generally I use Osmocote slow release fertilizer 2x plus various foliar feeds.

Here's a picture of the plant a day or two later (unfortunately I don't have a "before picture" but at least you can see I didn't kill the plant!):

Ivanzed - Oops! You wrote:

I prefer organic remedies :)

Sorry I didn't catch that. I'm all for organic, but rather than lose a plant, I personally will use a shot of miracle grow if it will save a plant. I had sprayed the plant previously with alfafa compost tea and later with agroflash and nothing else worked so dramatically.

If you want organic remedies, pick up some seaweed or kelp extract. It has plenty of potassium, and it's pulled seedlings with K deficiency out of it within hours. Best as a foliar feed, I think, but it works as a soil drench too.

--Alison

I happened to turn over a leaf towards the top of my tomato plant, it's a heritage seed type,btw,it had a grouping in a perfect triangle of white bumps, I immediatly broke off the leaf and squashed it underfoot. But what is it? I ran out this am to see if the dreaded hornworm was in evidence but not yet! I checked the undersides of a large sampling of other tomato plants but no more 'eggs' were found. Anyone know what these were?

Thanks in advance,
PL