It's hard to believe that just a handful of weeks ago, they looked like this:
They are growing like trifids.
Yep. That's a flower bud. There's more of them hiding in there...ack! Too soon! Too soon! So, I'll be pinching out the growing tip and encouraging side shoots to develop. I think I may also pot them on (again), and if the warm weather keeps up over the next week or two, I may park them into the cold frame with a light fleece cover to slow them down. We still have another month to go until frosts (should) be done.