My "diary" is a notebook where I document each orchid's name (I also make up my own names for them
), when I got it, the dates I water/fertilize and any observations that are important (i.e. leaves turning brown, repotting, change in lighting or insecticide applied). I only have 25 'chids so it works for now. I also take pictures which I store on my computer to go along with my observations for future reference. Just in case my memory goes bad, which it often does. I also have a few pages in the back dedicated to my wish list. For the wish list alone I might need a new book!!