At the end of the growing season, it's a good idea to clean up your EarthBox and prepare it for the winter. Not only does winterizing your EarthBox help protect it from the harsh elements, it makes it easier to prepare it for planting once warm weather makes a reappearance.
 
Your first task is to remove the remains of the previous season's plants. Next, dig out the fertilizer strip and discard it, then drain the water reservoir so that the contents don't freeze up and damage the system. You can do this by tipping over the EarthBox; just be careful not to let any soil spill out of the container.
 
Once it's clean and dry, cover your EarthBox until it's time to plant again. You should have received a second cover when you bought your unit. If you can't find it, you can make do with plastic sheeting; even a good plastic trash bag will do in a pinch. You should also cover up the fill tubes. While PVC pipe caps are preferable, even a plastic baggie or plastic wrap will work. 
 
For more tips on protecting your EarthBox from Jack Frost, visit the Forum.
 
Enjoy your winter!