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The pumpkin grenade looks like a pumpkin and any creature hit by its explosion will take increased damage and radiation for 5 seconds.
Pumpkin grenade (1)
The pumpkin grenade can be gained in groups of 3-5 by completing quests for Jack O' Lantern at the pumpkin house. Upon completing the Trick or Treat? daily quest the player character will be given 3-5 grenades, 10 radioactive pumpkin seeds, and the plans to craft the grenades if they do not already have them.
The plans for the pumpkin grenade will not be given if the player character cannot craft them - at least one level of Demolition Expert is needed.
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