Kim, looks like they're only hardy to zone 8, so yep, you'll wanna dig those. I used to grow them several years ago, and kept them in pots. They increased and bloomed well in pots. I just stored the dry pot and all in the basement for winter. For potted tender bulbs, I like a free draining soil mix (I usually add some pine park fines and osmocote to MG potting soil). My routine with potted bulbs has been to divide and re-pot every other year. In off years I just replace the top inch or two of soil and work in some osmocote.
