Overall, my tomatoes seem to be going OK, though I think they're very late in developing because I was very late in transplanting them from small pots into proper soil. But tiny tomatoes are now forming and I'm hopeful that this year's wonderful summer will last.
However, I've noticed that recently new leaves on most of my plants are starting off shrivelled up and then grow into leaves with the tips shrivelled up or under-developed. is this because I had them in 3" pots for far too long or something else?
I searched Google for this and the only suggestions I can find are that my plants were exposed to weed killer, but I am certain they were not, especially in the spot I kept the 3" pots.
So any other ideas? The plants are continuing to grow, and the stems all look healthy. It's just the tips of the very top leaves that are growing shrivelled. Here's a photo of some leaves that appeared completely shrivelled but then grew into almost normal leaves but the further toward the tip they get, the more shrivelled they remain: