All credit goes to /u/mporubca on reddit for this write up.     Why This is alternative or supplemental Farming/Herblore method to Herb runs. Classic Herb runs yield about 31k Herblore XP per run (102 herbs, with about 300 XP per herb) every 90 minutes with perfect setup, which includes Legendary Greenfingers Aura, Perfect Juju Potion and Ultracompost. Primal Fruit runs are very different. Here are some pros: XP per run is significantly higher