Oh, yeah, if you're viewing a plant in the database, over in the left column, if you scroll down a ways (and sometimes it's quite a way down) there's a place to click "Add this plant to your list." And if the plant is already in your list, it will say instead "In your list." But you have to be in the main entry, where all the photos are. It doesn't show up if you're looking at a single photo in the DB.