Oyster Mushroom
Pleurotus ostreatus · Family Pleurotaceae · Updated October 2026
2,180US records
49states
Decbusiest month
2,180 US records since 1879 (1,011 in the last 10 years)
Last seen Jun 24, 2026 (about 4 months ago) near Ann Arbor, Washtenaw County, MI, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Pennsylvania, California and New Jersey, and the busiest months are Dec, Jan and Oct. (Data as of October 26, 2026; records can lag by weeks.)
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
Lookalike warning. Many mushrooms, including deadly ones, closely resemble each other, and the only reliable identification comes from an expert looking at the actual specimen (often with spore prints or microscopy). Never use a name, photo or record count on this page to decide what something is.
When it's recorded
Records by month, all years. Busiest: Dec, Jan, Oct.
Where it's recorded
Top counties
- Orange County, NC (57) · latest Jan 23, 2026
- King County, WA (36) · latest Jan 24, 2024
- Sussex County, NJ (36) · latest Sep 28, 2019
- District of Columbia, DC (34) · latest Dec 14, 2024
- Allegheny County, PA (30) · latest Nov 25, 2023
- Marin County, CA (29) · latest Dec 30, 2023
- Ocean County, NJ (29) · latest Oct 26, 2019
- Hamilton County, OH (28) · latest Dec 6, 2023
- Mercer County, NJ (27) · latest May 4, 2019
- Fairfax County, VA (27) · latest Nov 11, 2024
More on this species from GBIF.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.