The main RuneScape Wiki has an article on: Dwarf Weed
The Old School RuneScape Wiki also has an article on Dwarf Weed.

Dwarf Weed is a herb that requires level 70 Herblaw to identify, giving the player 13.75 Herblaw experience. It is the second highest tier herb in RuneScape Classic, and can be used with a Wine of Zamorak to create a Ranging Potion, which requires level 72 Herblaw to make.

Dropped by

Herbs are always dropped by monsters in their unidentified forms

Monster Combat level Quantity Rarity
Jailer 51 1 7Unknown
Chaos Druid 51 1–2* 4Rare

* it is possible to get two different herbs

Community content is available under CC-BY-SA unless otherwise noted.