Explosemary

Explosemary is a herb used in the Dungeoneering poltergeist puzzle. It is one of the dangerous herbs. It can be consecrated using a certain Herblore level to make a consecrated herb.

If it is not the appropriate herb for the puzzle and you try to pick it, you get injured for a small amount of damage as "The unstable herb detonates in your hand."

Trivia

 * Explosemary's name is a pun on the real-world herb Rosemary.