Oyster Mushroom

(Pleurotus ostreatus)

Conservation Status

IUCN Red List

not listed

Oyster Mushroom


not listed


not listed


Common and widespread


Fall through early spring


Hardwoods, especially elm, cottonwood, alder, and oak. Usually on a stump or log.


This large, common, widespread, fleshy, bracket (shelf-like) fungus. It is usually saprobic, on decaying stumps and logs, but is sometimes parasitic, on the sides of injured trees.

This mushroom is found usually on hardwoods, especially elm, cottonwood, alder, and oak. It is rarely found on conifers. It usually appears as overlapping shelves on a log or stump, sometimes on a live tree. It enters the tree through a wound and infects the wood causing white rot. It first appears in the fall after a heavy rain.

There is usually no stalk unless it is growing on top of a log. If there is a stalk, it is short, ¼ to 1½ long, thick, and off-center or even laterally attached. If growing on top of a log the stem may be centrally attached.

The cap is oyster- or fan-shaped and 1½ to 8 in diameter. When young it is convex and the margin is rolled inward. As it matures it becomes flat or occasionally funnel shaped. The upper surface is smooth and variable in color; white to gray, grayish-brown, or tan, sometimes dark brown. When wet it is somewhat slippery or greasy but not slimy or sticky. The margins are often wavy or lobed. The flesh is thick, white, and firm but soft. It is edible and has a mild odor and taste.

There is no universal veil.

The gills are broad, close to well-spaced, and run down the stalk if there is one (decurrent). They are white or tinged gray, becoming tinged yellow on older specimens.

The spore print is whitish, pale lilac, or gray.



Distribution Distribution Map  

Sources: 4, 7, 24, 26, 29, 30, 77.


The genus Pleurotus was formerly placed in the family Tricholomataceae. Molecular phylogenetic analysis resulted in several families, including Pleurotaceae, being separated from Tricholomataceae by 2006.



Basidiomycota (club fungi)



Agaricomycotina (jelly fungi, yeasts, and mushrooms)



Agaricomycetes (mushroom-forming fungi)






Agaricales (gill mushrooms)







Grey Oyster Mushroom

Oyster Mushroom

Tree Oyster Mushroom








Obtaining its nutrients from non-living organic matter, such as decaying plant or animal matter.



Visitor Photos

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what is this?

  Oyster Mushroom    

Robert Briggs

  Oyster Mushroom   Oyster Mushroom

Cheray Farm

It is growing out of a dead elm or oak. Looks like an oyster.

  Oyster Mushroom    


MinnesotaSeasons.com Photos

  Oyster Mushroom   Oyster Mushroom
  Oyster Mushroom    





  Oyster Mushrooms
Andree Reno Sanborn
  Oyster Mushrooms  

Pleurotus ostreatus

very luscious (so I've been told)

  Oyster Mushroom (Pleurotus ostreatus)
Bill Keim
  Oyster Mushroom (Pleurotus ostreatus)  




Visitor Videos

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Other Videos

  Wild Mushroom Hunting, how to find Oyster Mushrooms
Earthwalker40 .

Published on Jul 29, 2013

Please comment, share, like and subscribe: https://www.youtube.com/user/Earthwal... A nice rosette of edible Wild Summer Oyster Mushrooms, found while Wild Mushroom Hunting in Warren county Ohio.

Mushroom Hunting
Wild mushrooms
Pleurotus pulmonarius
Oyster mushroom

  Oyster Mushroom Hunting, Foraging, Identification : GardenFork.TV

Published on Dec 2, 2012

Mushroom Identification, Foraging, and Hunting for mushrooms how-to video. Oyster mushrooms are common and edible, but be sure you know how to identify mushrooms. Watch all our mushroom hunting vids here: https://www.youtube.com/watch?v=elfssVLI2uY&list=PLK9GxIRaLC5Vt-O2sOjXpoR3dLZzPHwHC

Start learning mushroom identification here.
Mushroom Identification Books: http://amzn.to/XovLmW

Mushroom Identification Books:
Audubon Guide to Mushrooms: http://amzn.to/XovLmW
Mushrooms Demystified: http://amzn.to/XowdS2

Watch our Mushroom Cooking Video: http://youtu.be/Xz1Fz2f5KxM

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Produced by GardenFork Media LLC ©2014 all rights reserved All embeds must live link to GardenFork.TV. No Editorial Excerpts without permission, Violators agree to pay $5,000 per second + $10 per view + all collections & lawyers fees Music: Happy Hour, Composed by Dale Herr (ASCAP) , Toast Factory Publishing (ASCAP) Recording Licensed from the UniqueTracks Production Music Library Inc.

  Oyster mushrooms HD 2012 "Pleurotus ostreatus" field collecting Bigfoot Zen~Yeti

Published on Nov 23, 2012


Organic Oyster (Pleurotus ostreatus) mushrooms discovered by Michael on a rotting maple log in Maine. Brief description of how to key out this species. Never eat a mushroom you haven't I.D. 100%. Some species can kill. "Pleurotus means "side ear", from Greek πλευρή (pleurē), "side. Get a good field guide and study it. Be safe.

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Visitor Sightings

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Location: coon rapids mn

what is this?

Oyster Mushroom

Robert Briggs

Location: Spring Lake Park Reserve

Oyster Mushroom

Cheray Farm

Location: Albany MN

It is growing out of a dead elm or oak. Looks like an oyster.

Oyster Mushroom


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