plants that are spawned by a DM will not populate on their own. They need a creature "Herb spawner" to be placed to populate and work. "Mysterious Herb" plants will continously regenerate. DM placed hers won't.
I have been using herbs to train people and for plotlines. They will be entitled "Low Level Herbs". So if you see a Low Level Herbs, it will either have loads, or no herbs.
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