Gaptooth Breach has a couple by the house at the base of the hill. In more general terms, ride along the roads there and keep your map zoomed out--this will make the little herb icon appear sooner, making it easier to see them. If you're in singleplayer, go buy a survivalist map. It's worth it.Up your assAll over the place. If you're having trouble, just buy a survivalist map and you'll find em in no time.Activate a survivarlist map, and ride from Benedict Point to Rathskeller fork. You should find plenty along the wayJust go to Gaptooth Ridge area on the map, and go off road. Just ride around, and watch your minimap for the plant icons which appear. There are plenty around that area.