This is growing in a pot of Rosemary that I repotted a few months ago. It isn't something I've purchased or ever grown. I can't recall for certain but I may have mixed in some old potting soil from pot left by the prior owners. This seems to have just started growing within the past month. Maybe some type of succulent? The leaves are thin and waxy feeling. I'd like to try and keep it but don't know growing requirements.