A common practice in digital gardens is to apply a stage to each note.

StageDescription
SeedInitial stage of a note, just an idea at this phase, unsure whether it will ever be developed further
SeedlingFirst work on the note has been done, needs further work
SaplingNot fully emerged note
TreeA fully grown note, some sort of evergreen note
WitheredOutdated, kept for archival purposes
StoneInput notes, based on other people‘s content.
MapsA note made for navigation, usually consisting of a lot of links.