This collection includes every marker from the Yarrow Flowers category of points of interest in Divinity: Original Sin 2, all placed on interactive maps created specifically for the game.
Here is a list of places on the west side of the Fort Joy island, where you can find Yarrow Flowers. You need one of them if you want to peacefully complete The Murderous Gheist quest.
The index below enables quick navigation to the desired marker / point of interest.