I will 2nd his thoughts, AS long as your temperatures are not fluctuating between freezing and not freezing. If you plan on storing your buds and trimmings for long periods of time you need to ensure that it stays frozen at all times and the temperature does not fluctuate between freezing and not. If you do notice a sudden spike in temperature bring them inside and stick them in your freezer or better yet bring them inside anyways and leave them there where you know the temperature will remain constant.