Because everything else about this game has been picked over with a fine-tooth comb.
In all seriousness, this game's botany is endlessly fascinating to me and I notice how much work the developers put into the plant life to make this virtual world better. I see you, plant guys at Rockstar! I see you!
Because it has to be long-winded and complicated as to be more fun, I'm rating each plant (not including the rdo exclusive ones OR the orchids) out of ten for accuracy on:
Has this taken me a long time? Absolutely. But I've been thinking about tackling this project since the game came out, and its release and the ease of interaction with its plant life is what really kicked me into my botany special interest. I figured I'd pay it back by nitpicking everything I possibly can about a field I'm pretty confident in.