Grimy buckthorn is the highest tier 3 grimy herb found while training Dungeoneering in Daemonheim's dungeons. It can be obtained as either a monster drop or from planting a buckthorn seed, which requires level 95 Farming. Cleaning it requires level 74 Herblore, producing a clean buckthorn and granting 13.4 Herblore experience.
Drop sources[]
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