Well, there were vines that seemed to move of their own volition... and they were specifically aiming to catch us and trip us while we walked in the field. And the tree it seemed to be coming from was... weird.

[And the fact that the dark water seemed to come from the tree was weird, too.]

I don't remember if anyone was able to tell us if the tree had been there before... and if not, it means it sprang and grew in a matter of days, and it was big. And when we destroyed it, the black sludge slowly disappeared from the corn fields.

I think I saw someone saying that it affected animals who drank it, too? So... maybe... you shouldn't touch it with your bare hands?