Minimum pot size
The bigger the better and some friends have recommended up to 16 inch pot for a single bulb.
When you want to create an Amaryllis garden in pots, keeping in view the logistic problems, you would like to use the smallest adequate pot for a single bulb.
Recently I have transferred over 300 bulbs from ground to pots. I chose 10 inch diameter backed clay pots. I have also planted a few in 8 inch pots for comparison.
All pots are placed at roof top and will get shade of a green net during summer.