Cardboard even in the rain?

Yeah it only has to last a few weeks. But if you think the soil stays moist enough for carrots to sprout - or maybe it has something to do with the darkness too?

Look it might be a corny oneness hippie thing, but on a really big level, being up and close with the earth you're going to be part of again in the form of dust ain't such a bad thing. There are worse ways to spend your time, like being an evil mother fucker genociding like a demon and raping children, you know?