(This does not award a quest point.)
Obtain the healing herb Simbelmyne.
A Simbelmyne flower.
From Edoras signpost.
do 3s,3w,s
Or you can get the flower from Mirkwood: Elven Short Sword.
Or get the flower from Rohan: Mirryn's Vial.
Or you can buy one from the Ethrings healer (A local herbalist's home). From Linhir signpost.
do w,n,nw,4n,nw,4n,nw,n,nw,2n,nw,n,3w
There are three places you can find Simbelmyne, two are quests, the other one requires a small chore.
If any of the information here is missing, or wrong, please let us know.