My tomatoes are looking very strong now. Many of them are about three feet tall, and some of them have their first flowers, though no fruit has set yet.
I have started feeding them now, because they have been in those pots for a few weeks now and the nutrients in the compost will have been considerably depleted. I use "Tomorite" proprietary tomato-food, though later in the year I will try to make some home-made Comfrey Tea (although my comfrey is looking very sparse this year, so it probably won't amount to much!)
This is a flower on "Cherokee Purple". It's a very complex flower for a tomato - almost "double".
Do you see how the upper leaves of the plant in the photo below are curled inwards, almost bunched-up? I used to be worried when this happened, but I researched it and found that this happens when the nights are too cold for the plant's comfort. We humans do the same when we are cold: we wrap our arms around ourselves and clench them tightly. No real harm is done, and the plant will unclench in due course.