Answer: Iris have a normal cycle of rest during the winter and growth during the summer. If you keep the plants from growing, they won't manufacture and store energy in the roots and won't grow and bloom the following year. It would be best to dig and store them over the winter months rather than dig them now and try to hold them in suspended animation over the entire summer and the following winter. Try to replant in containers or in another garden bed during your renovation period. Otherwise, it's questionable whether or not they'd survive storage.
Good luck with your new landscaping project!
Q&A Library Searching Tips