Hi Kim,
Just a friendly heads up about doing plant combinations. You can edit ("manage") your PC's even after you've approved them for public viewing. Open one of your PC's inside the PC page. There's a menu of choices below it, including a "Manage your ..." and a choice for deleting the image, if you want to start all over. You can delete/add/relabel tags with the 'manage tags' option at this point. I haven't tried it on a PC that had no tags to start with, as is your case here, but I bet it'll work. Another hint. I usually search the database to make sure the plants I want to label are actually there before I upload a PC and try to label it. If a plant isn't in the database, and I think it should be, I propose adding the plant. I know I can go back and add a tag for it later, after the plant proposal has been approved. Good luck. - Elizabeth