Only the leaves on the uppermost branches on my 25 Rosso Sicilian tomato plants are curling upwards. They have been doing this months before transplanting into the garden. Other than that, I haven't been over-fertilizing or over-watering. They are still growing and other than that, seem pretty healthy. I've also been using a drip hose to water. I'm not sure if this is a genetic trait to this specific variety? I can't see any bugs or see why this could be a sign of stress. Any thoughts?
Here is another photo.
Here is an interesting site you might find helpful: http://aggie-horticulture.tamu.edu/vegetable/files/2010/10/E-626-What-Makes-Tomato-Leaves-Twist-or-Curl.pdf
