I use a Mac, and use Pages to keep an alphabetized list (with photos) of what I have and what I want. I use a program called Icon Logo and Avatar Designer to map out what is where, since I have iris mixed in some beds with lots of bulbs and some with perennials and then some beds with just iris. The program makes it easy to swap out names when I replace something, and delete things when they go belly-up. Or in the belly of a squirrel.
