I'll ditto the consistency comment. I have grand plans of taking detailed notes, then I'll forget about it within a month. Currently the one I like best is myfolia. You can log in all your seeds, seedlings, established plants, etc, then go back periodically and add notes. Thenjoy you have a detailed account of the life of every plant in your garden, plus a history of what happened each season. But again, consistency is key and I'm lousy at keeping up with it.
