Cave fungus

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This is a lore summary, presenting intradiegetic or in-universe information about the subject. For game characteristics and similar data, consult the table on the right.
Game-specific articles
Fallout 3Cave fungus
FO: New VegasCave fungus
Fallout 4Cave fungus
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Cave fungus is a food item mentioned in Fallout 2, and found in Fallout 3, Fallout: New Vegas and the add-on Honest Hearts. It is also a world object in Fallout 3 and Fallout: New Vegas.


These orders of fungi are typically red and white, glowing green, or brain-like mushroom caps that only grow in cool, dark and damp environments, like caves. The red and white variety have a particularly useful mutation for humans that allows them to absorb radiation out of bodily tissue when eaten. This cave fungi can also be used to craft hydra, a chem that quickly regenerates crippled limbs.


Cave fungus

Gameplay articles:

Red and white mushroom caps found in caves throughout the Capitol and Mojave Wasteland.

Glowing cave fungus

Glowing cave fungus.png

Identical to regular cave fungus, save that it gives off a lime green glow.

Brain-like fungus


A fungus commonly found on the floors of caves in the Capitol and Mojave wastelands.