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Requires one Seed to Plant, takes 70 minutes to grow, and Crop yield varies from 3-8 depending on use of Compost/Super Compost. Per Jagex Herbs do not require watering (which is why it doesn't show when you water it.) See Patch Locations above. When Planting, you don't know what Herb it will be, but as a general rule, the fewer you have, the rarer the Herb. When picked they are Unidentified Herbs, which you can then click to identify per your Herblore Level (or use for Compost; Avantoe and above can be used for Super Compost.)
1) Patches no longer let you water them.
2) You know what seeds you're putting in now, and what herbs you get out, though they are still grimy.