I'm still using a spreadsheet, but it's getting unwieldy. As far as data, I
keep pretty much what all of the other posters do, sans the watering
schedule. There are too many variables to consider in my case, growing
outside.

I do add a hyperlink for each plant so I can know what each looks like.
Naturally, there are lots of plants that I can picture in my mind, but with
250 or so, it's easy to forget what some hybrids look like.

Diana