Farmer: The inner workings of harmony pillars are a mystery. Our research indicates that they're powered by the skills of whoever plants a harmony moss seed, which I can provide you with - for a price. The skill a pillar relates to changes each day, or when it is fully sated and harvested. Once a seed is placed, it is irrevocable and you must finish the harvest before it will change. The moss will not grow over time. Only as you grow shall it grow.
Player: How much harmony moss have I harvested?
Farmer: Hmm, what was the name again? Ah - yes. There we go. By my count you've harvested [number] units.