How do I collect skulls?

It's an in-game question, but the title alone made me jump, so I came in to check it out ;;

Skull lol If you're talking about getting seeds from gathering, to get them at camp, you need to grow shadow seeds into trees.. then when you gather from the trees, you can get them from the shadow chests that drop. It's quite complicated, so if you're looking for skulls to get seeds, it's easier to just get seeds from the well.. ^^