I wish I had started keeping the number of fans received, where they came from, how much I paid for each plant,and take photos of them. I started doing that later, but missed a lot of the early ones. But what you add depends on how much time you want to spend. Almost all the other info can be added later at any date, but if you don't take photos when the plants arrive and make notes of the number of fans then that is lost. It is good to know the size and the number of fans received so that the rate of increase the plants make can be noted.