HI Andrea, we recommend digging in September so the best would be to wait til next September. Peonies just don't do a good job of sending out new roots if done in spring. as far as storing they need a cold period 35 degrees for probably 3 months in order to bloom so unless you have cold storage it is tough to keep them. If you just cant wait til next September you could do it now and make sure he mulches with several inches of shredded leaves or wood chips. good luck, sandy