Plants for Adoption

I don't like all my neighbours (being generally rather antisocial), but some of them are rather nice. So I was walking yesterday and say this in the common area of our street. Somebody is giving their plants for adoption. I'm not much of a gardener, but that is the only reason why I didn't pick one of them. That and I have no idea what to do with these plants or what they are. But that is a sweet and quirky gesture, giving free plants for adoption. I don't know who the neighbour is, I suspect it's not the first time he/she is doing this (see this post), I hope to see more things offered for free in future months.