Tom, Lucy, thanks for the comments
I think for me space would be the deciding factor at the moment.
As this was my first attempt at hybridizing iris all of my crosses this year fall into the 'just for fun' category. I actually didn't expect so many takes and was quite surprised at the number of seeds in some of the pods.
Next year I will definitely give a little more thought to my crosses. Winter is a great time to do a bit of homework and study lineages.
