New to Portland, Oregon...don't know what to do with pottemaples
So I am new to Portland, Oregon and I have no idea what to expect and what to do with my potted japanese maples. A lot of people told me that the winter is "mild" but I just want to make sure my potted maples will survive.
They are in various containers, all plastic and wooden. How should I prepare them or should i even worry at all?