When to harvest frost hardy plants?
I started getting a feel for when to harvest my not frost hardy plants this fall. But how long could I keep frost resistant or frost hardy plants out? I'm in zone 3. So when do you harvest frost hardy plants in the fall, i.e. crops like turnips, cabbage, brussels sprouts, etc...? Does the advice dictate that you need to watch the weather day to day, and are there guideline for beginners and then more advanced instructions? thanks