Storing Earthbox outdoor through freezing winter?
 

Have anyone left their Earthboxes outdoor through winter with snow and below freezing temperature? I can move them into the shed, but the space will be limited especially once I accumulate more of them it won't be possible. I rather not have to dump out the potting mix and stack them.

I can make sure let it dry out and put on the cover so no more water get in, so it won't freeze and expand. But if it's too much risk of the plastic cracking, then I might have to stick with grow bags.

Reservoir full might be a problem. Just the soil freezing, not. However the soil will 'degrade' faster this way, meaning will decompose and compact faster than if dry stored.

I left mine out for the first time this year here in Maine. I have 2 regular and 1 Jr. I have planted some peas in both the regular boxes so far. They seem to have survived the winter with no ill affects. I did pull all the mix out of them when I planted this year. I had used them last year for peppers and took the roots out this spring. I tipped them all toward the drain while they over wintered so the water would not accumulate in them. so far so good.

I turn them on their (drain hole) side. I leave the roots intact to help hold the mix. Have not moved or emptied the mix for probably 5 or 6 years. No issues.

left mine out. Tilted on the drain side and left them that way face to face.
I only planted two last year. Newbie testing. And they did really well for peppers,
keeping them properly watered all season. Fantastic design.
(big thanks to Marsha for the recommendation)

I should add that my son-in-law left his outside for several years without any prep at all, and they never cracked or had any other issues. I rescued them last fall and emptied them and stored them in my mini barn. Checked them for leaks this spring, and they were in good shape. Not that I recommend abusing them, but they are quite durable!