I am having a significant problem with leaf curl on one of my container tomato plants- the new variety Clint Eastwood's Rowdie Red.

It is a 12 gallon hardsided platic pot with big drainage holes on the bottom and some air holes at mid level.

None of my other plants right beside of it have leaf curl like this. ( a few have maybe 5-10%, this one was 90%)

Took it to the local nursery and they said they found no evidence of virus or insect problems. They suspect environmental stress-- watering, nutrition, excessive heat or sun etc. The leaves are a nice green color.

Upon revewing my notes, (what there is of them) I discovered I have never put lime in my mix which has been Pine bark, Perlite and Sta-Green usually 2:1:1 but on this pot I went to 3:1:1. (I couldnt decide how much lime i would need, and never bought it.)

Watering has been as needed, about 1 gallon every other day. Fertilizer has been a week solution of Miracle grow all purpose and some ocean kelp every other week.

the plant is about 32" tall and it has 2 flowers, I bought it about 14" tall in early May, immediately put it in a 1 gallon pot and kept it in the green house till end of may, then transplantd it the very end of may.

This morning i bought some Garden Lime and put 5 tablespoons in the trouble pot. tonight it seems like some of the leaves have started to un curl.

Is this WISHFUL thinking on my part, or is this the possible cause?

zone 5 Colorado springs we have had

Thanks