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|usage = [[Taproot (Quest)]]
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'''Vervain''' is an item used in [[Taproot (Quest)]]. The player must give [[Tiek]] a Vervain, alongside with a [[Lobelia]] and a [[Ginseng]] from her garden. However, these aren't healthy enough to make a cure for the [[Dark Forest]]. Herefore, the player must find healthier flowers, and give these to Tiek.