Relatively new to container growing, and just wanted to know about overwintering perennials in containers. I have a peony that was given to me, and had nowhere to put it in our garden, so we put it in a container and it has really taken off! I am building two new, large beds as part of a patio structure, and Im not sure I will have enough time to acclimate it to the new beds. My question is, how does one overwinter a perennial in a container? Outside? I live in Buffalo, NY, so we do have low temps. Or, can I keep it in the garage while dormant in the winter? My current pots are all very durable plastic, so I am unsure of the risk of ice heaving and breaking them. Thanks in advance for your assistance.