This sounds like it wouldn’t be far away from just a basic spreadsheet. Dates, treatments, produce, etc., all easily added in there without much fuss.

You can share a single Joplin profile with shared data across multiple users, but a shared spreadsheet might make more sense.

I wait for something to break. Then I yell “God fucking dammit, I don’t have time for this right now!” and spend an hour triaging things before I just try docker down, pull, up and everything works.