A fragile farming urn is the resulting urn after the player starts filling a fragile farming urn (empty). While the player carries the urn in their backpack, it will fill up passively as the player gains Farming experience from certain activities, for example gathering yields from Farming patches and produces from animals, checking health of the plants etc. requiring up to and including level 30 Farming, until it is filled with 2,500 experience and becomes a fragile farming urn (full).
The fully filled urn will grant 500 Farming experience after teleporting the urn to Ernie. While carrying an urn enhancer, it will instead grant 625 experience per teleported urn for a cost of 20 charges.
Making the urns and adding a nature rune to the urns requires level 18 Crafting. The Assist System and temporary skill boost can be used to do so. Filling the urns and teleporting the urns does not require Crafting level.