For the Herb quest, I found the Tree of Healing. It is NOT on the map and it is truly in the Highlands. Go to where the Assassins and Renegades hide. You will find the tree but there is one problem; it says "You didn't find anything". I am stuck too, but at least you found the tree. (:
For the Corruption and Divulgence, you need to go to the Highlands @ the Tavern. There you will see a pond and find the rock that you can talk to. (The cursor will change of course) but then again; it says "You didn't find anything". My friend said for both quests, there is more than one tree and rock...
._.
So I don't know yet.. just a little heads up.
EDIT: NVMM, for the Corruption one, there IS two rocks you can talk to~!
Do NOT click the rock next to the Yellow leafed tree. Find the other one.. I can't really specify the location... >:[
but it is not the one next to the Yellow leafed tree!
