Well... I went all weired.
[X] Found all 6 MPs: Yes
[X] Found all the bugs: Yes
[X] Memorized all 23 flowers and foliages: Yes (quite barely, but yes, I have)
[?/X] check every day for new seeds: Hmm... Well, yes, I used to
[X] found all species: Most certainly
[X] after playing, when you close your eyes, you have seen plants: Ummm.... I have dreamt of plants, does that count?
[X] "identify" plants that you see in real life: Yes
[?] have gotten at least 5 other people hooked: I have lost count
[X] have tried at least 3 different mods: Well, I'm a modder. LOL
[X] able to identify any plant in PT by looking at it