Should I keep potting on annuals in my greenhouse?
I've grown quite a lot of sweet peas and poppies which were sowed in autumn and kept in my greenhouse. I potted them on to 1 litre pots a while back but they're still growing and some of the poppies in particular are looking like they might need to be potted on again. Should I do this, or would I be ok / should I leave them in their current 1 litre pots until I plant them out in the spring??