The plunges are finished and I'm out of space.
I've used 13cm, 15cm and some c.20cm clay pots. The larger pots are for Galanthus, Merendera, Colchicum, Narcissus and orchids. Single bulbs are in the 13cm and smaller pots - cant remember the size of the smallest pots.
The Galanthus are all this year's acquisitions and will be planted out next summer which will free up space.
Next year I'm going to buy more 13cm pots and down size