Currently Hosidius' farming patch has a functioning herb, flower and allotment patch but no Tool Leprechaun, which means you can't note your produce.
Leprechaun should be added to increase consistency between the other farming patches. Also OSRS also has a Tool Leprechaun in the Hosidius farming patch.
To get to the Hosidius farming patch teleport to sand crabs and run north or use Xeric's glade teleport on Xeric's talisman