A perfect juju farming potion may increase the yield when harvesting, as may equipping a Tirannwn quiver 3 or 4. The perfect juju farming potion also allows moss to be received while harvesting from other non-herb crops. Unlike crops, herbs, etc., when harvesting harmony moss from a pillar, all moss is harvested at once. Harvesting 50 harmony moss is the requirement for the "of the Meilyr" title, harvesting one set of harmony moss while the Voice of Seren is active in the Meilyr Clan is required for the "Sing-Along-a-Seren Verse 6" task.