I have saved a bunch of colored envelopes from cards that I have received. This is a way to reuse those that don't get too torn up when you open them. This particular one holds a tabbed card in the front pocket and a packet of seeds in the back.
Super cute envelope pocket idea! The colors work great together. (I have to remark at how precise your trimming is, if I didn't know better, I'd have thought you used a punch!) Very nice!