The gardens have flooded at least twice since my last post and there's a solid layer of ice on top of my plot. A lot of it has melted but what's left may as well be concrete. The garlic is still under there somewhere and I'm a little worried about there being any oxygen in the soil, but hopefully it's dormant enough to be ok.
One of my buckets has floated out of the garden and is hanging out nearby. It's still frozen to the ground and I left it rather than breaking it. It's just funny how far it travelled!