Great idea.
I just added to my plants list all that I have uploaded photos for in the past. The only thing I would add is that it would also be nice if you could do a mass "add" to a catagory. Right now I have 199 in my list and all but 5 are daylilies that I want to put in that catagory. It will take awhile to do all 194 of them.
Also it would be great if there was a way to look our plants up by the letter.