Latin origin-->Flora meaning plants;the ending -cide coming from caedere, meaning to kill.
"Jen's wedding was like a second floricide"
"chicks dig floricide, they think it's romantic"
"That shirt is guilty of serious floricide"
Dude1: "Dude, i just wanna go out and commit some floricide!"
Dude2: "Totally! Let's get wasted. I'll get the weed and gardening tools!"