Limpwurt root

Limpwurt roots are used to make Strength potion at level 12 Herblore (combined with a Tarromin) and Super strength potions at level 55 Herblore (combined with a Kwuarm). Limpwurt roots, like most herblore items, are expensive when bought from other players. As an alternative to paying for them, limpwurt roots are drops from Chaos Druid Warriors, cave crawlers, cockatrice, cyclopes, hobgoblins, tribesmen, cockroach drones, turoths, and hill giants.With a high enough dungeoneering skill a dungeon can be entered with respawning limpwurt roots. With level 26 Farming, players can grow their own roots in a farming patch.

The Apothecary in western Varrock will make a 4-dose Strength potion if you bring him Red spiders' eggs, a limpwurt root, and 5 coins. This is the only way to make a potion on free worlds.

According to the official bestiary (now removed), Hobgoblins often chew limpwurt roots and the minitrice pet use them as food, which may refer to common drop of these roots for Hobgoblins and cockatrices (minitrice needs a cockatrice head for summoning ingredient)

Trivia

 * Limpwurt may be named after Limpwort, an alternative name for Veronica beccabunga.
 * Limpwurt root's price has decreased since the release of the resource dungeons (there is a limpwurt respawn and large number of hill giants in the Edgeville resource dungeon, which can be accessed by all players with 20 Dungeoneering) to just over 1000 coins.
 * Three Limpwurt roots spawn in the Edgeville resource dungeon. They re-spawn about every 55 seconds.