Herbalist's Tasks (Act 2)

Acquisition
Solivitus at the Gallows (after completing Herbalist's Tasks 1).

Walkthrough
Harlot's Blush Flower can be found at Wounded Coast. Run along the outer side of the coast till you reach the further map exit. The flower is near the exit.

The tattoo ink can be gotten from a chest at the Dalish camp located at Sundermount.

Varterrals can only be found after completing Merril's companion quest in Act 2.