I live in zone 5. Can I plant the Iris rhizomes in the spring? Will they flower in late spring or summer? I bought them late fall in 2014 and kept them in my garage.
Can I Plant Iris Rhizomes in Spring?
Certified GKH Gardening Expert
I would examine the rhizomes to determine their health.
If they are dried, damaged or soft I would discard them.
They may or may not bloom the first year, but if they are healthy and viable they should began blooming by the second year.