A person who lives to garden,has studied (formally or informally) plants,trees,etc. and can tell you more about them than you probably want to know.
Can be found in mostly sub-urban and rural areas.
Area of expertise is varied, but is usually related to their own "zone".
Gardenologist: Wow! That's an amazing senna!
Friend: Uh... yeah, nice.... (huh?)
Gardenologist: Hey! What's that weird looking plant by your foot?
Friend: I dunno, you're the gardenologist!
Gardenologist: Oh,how sweet, there's a name for people like me!( proceeds to pluck a leaf of unknown plant to identify later)
Gardenpoht is the definition of the best/kindest person you will ever meet, unlike most friends you will never feel the need to vent or rant about them, reason being they are practically incapable of hurting ones feelings.
@gardenpoht is the bestest friend I've ever had, after 3 years not once have I ever had a single bad thought about them.