How to Farm Hammerstone Hops in RuneScape

Acquire a level 4 farming.

Travel to one of the hops patches. North of Lumbridge's farm Yanille North of McGrubor's Woods Entrana (make sure you bank any weapons/armour prior to travelling)

Rake the patch. Allow your character to rake all the weeds out of the patch.

Add compost to the patch. Supercompost achieves a higher successful yield and helps the item from plant disease.

Plant 4 hammerstone seeds. Use the seeds from your inventory on the treated patch.

Water the patch, when needed. Use a watering can on the patch during the growth intervals (10 minutes each).

Harvest the hammerstone hops after 40 minutes of planting.