I mean I'm honestly more surprised more romantasy type stories in particular don't run with the "placing wild roses around where a vampires sleeps contains/immobilises them" thing. It comes straight out of Dracula, and the folkloric superstitions before that.
That might be a fun bit, Toll Bridge but the toll booth is operated by the troll who lives under the bridge...
I'm 90% sure that skit has been done somewhere in some form lol