Every water you give costs 5 $FARM, paid directly to the plot owner. Their crop gains +4% yield (capped at 10 waterings = +40%). On rainy days the watering count is doubled, so timing your waterings around a rainy oracle post is the cheapest way to push someone's harvest higher.
Sorted by time-to-ripen ascending - water plots about to ripen for the most efficient bonus.
Connect to scan for growing crops.