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Mushrooms in Delaware County, Pennsylvania
Updated October 2026 · from open GBIF records
998mushroom records
285species recorded
Sepbusiest month
998 records since 1851 (763 in the last 10 years)
Fruiting now
Based on past sightings (mostly since 2011; all years where recent records are few), not a forecast. Weather and place matter a lot, and a listing here says nothing about whether a mushroom is safe.
Usually recorded in January here:
Turkeytail Trametes versicolor5 January records since 2011
Diamond Polypore Neofavolus alveolaris2 January records since 2011
White Green-Algae Coral Multiclavula mucida2 January records since 2011
Usually recorded in February here:
Bitter Oysterling Panellus stipticus2 February records since 2011
Oyster Mushroom Pleurotus ostreatus2 February records since 2011
Deadly Galerina Galerina marginata2 February records since 2011- Turkeytail Trametes versicolor2 February records since 2011
Velvet Shank Flammulina velutipes2 February records since 2011
Lumpy Bracket Trametes gibbosa2 February records since 2011
Usually recorded in March here:
- Deadly Galerina Galerina marginata3 March records since 2011
- Birch Mazegill, Gilled Polypore Lenzites betulinus2 March records since 2011
Pear-Shaped Puffball Apioperdon pyriforme2 March records since 2011
Hairy Bracket Trametes hirsuta2 March records since 2011
Dead Man's Hand Scleroderma polyrhizum2 March records since 2011
Usually recorded in April here:
Dryad's Saddle Cerioporus squamosus10 April records since 2011- Turkeytail Trametes versicolor8 April records since 2011
Chicken Of The Woods Laetiporus sulphureus6 April records since 2011
Brown-Toothed Crust Fungus Hydnoporia olivacea5 April records since 2011
Orange Moss Navel Rickenella fibula4 April records since 2011
Crown-Tipped Coral Artomyces pyxidatus4 April records since 2011- Lumpy Bracket Trametes gibbosa4 April records since 2011
- Oyster Mushroom Pleurotus ostreatus4 April records since 2011
Golden Bracket Fuscoporia gilva3 April records since 2011
Deer Mushroom Pluteus cervinus3 April records since 2011
Crowded Parchment Stereum complicatum3 April records since 2011
Glistening Ink-Cap Coprinellus micaceus3 April records since 2011
Usually recorded in May here:
Wine Roundhead Stropharia rugosoannulata12 May records since 2011- Dryad's Saddle Cerioporus squamosus12 May records since 2011
- Deer Mushroom Pluteus cervinus9 May records since 2011
Orange Mycena Mycena leaiana7 May records since 2011- Chicken Of The Woods Laetiporus sulphureus6 May records since 2011
- Oyster Mushroom Pleurotus ostreatus4 May records since 2011
- Lumpy Bracket Trametes gibbosa4 May records since 2011
Spring Polypore Lentinus arcularius4 May records since 2011
Pale Oyster Pleurotus pulmonarius3 May records since 2011- Golden Bracket Fuscoporia gilva3 May records since 2011
Common Porecrust, Split Gill Fungus Schizophyllum commune3 May records since 2011
Artist's Bracket Ganoderma applanatum3 May records since 2011
Usually recorded in June here:
- Pale Oyster Pleurotus pulmonarius5 June records since 2011
Golden Oyster Mushroom Pleurotus citrinopileatus3 June records since 2011
Stinky Squid Pseudocolus fusiformis3 June records since 2011
Berkeley's Polypore Bondarzewia berkeleyi2 June records since 2011- Globifomes graveolens2 June records since 2011
Usually recorded in July here:
- Golden Oyster Mushroom Pleurotus citrinopileatus8 July records since 2011
- Crown-Tipped Coral Artomyces pyxidatus7 July records since 2011
- Berkeley's Polypore Bondarzewia berkeleyi5 July records since 2011
Cinnabar Chanterelle Cantharellus cinnabarinus5 July records since 2011- Common Porecrust, Split Gill Fungus Schizophyllum commune4 July records since 2011
Jack O Lantern Omphalotus illudens2 July records since 2011
Gunpowder Amanita Amanita onusta2 July records since 2011- Turkeytail Trametes versicolor2 July records since 2011
Common Bird's Nest Crucibulum laeve2 July records since 2011- Orange Mycena Mycena leaiana2 July records since 2011
Burnt-Orange Bolete Tylopilus balloui2 July records since 2011
Black-Stalked Marasmius Tetrapyrgos nigripes2 July records since 2011
Usually recorded in August here:
- Stinky Squid Pseudocolus fusiformis5 August records since 2011
Eastern Stinkhorn Phallus ravenelii4 August records since 2011
Marasmius sullivantii3 August records since 2011
Gerard Milky Lactarius gerardii2 August records since 2011- Common Porecrust, Split Gill Fungus Schizophyllum commune2 August records since 2011
Reddening Lepiota Leucoagaricus americanus2 August records since 2011- Golden Oyster Mushroom Pleurotus citrinopileatus2 August records since 2011
Ringless Honey Mushroom Desarmillaria caespitosa2 August records since 2011
Mycetinis opacus2 August records since 2011- Turkeytail Trametes versicolor2 August records since 2011
- Black-Stalked Marasmius Tetrapyrgos nigripes2 August records since 2011
Black-Staining Polypore Meripilus sumstinei2 August records since 2011
Usually recorded in September here:
- Chicken Of The Woods Laetiporus sulphureus11 September records since 2011
- Turkeytail Trametes versicolor6 September records since 2011
- Golden Oyster Mushroom Pleurotus citrinopileatus5 September records since 2011
- Orange Mycena Mycena leaiana5 September records since 2011
Hen Of The Woods Grifola frondosa4 September records since 2011- Stinky Squid Pseudocolus fusiformis4 September records since 2011
- Eastern Stinkhorn Phallus ravenelii4 September records since 2011
- Jack O Lantern Omphalotus illudens4 September records since 2011
Giant Puffball Calvatia gigantea3 September records since 2011
Golden Reishi Ganoderma curtisii3 September records since 2011
Brown Cubical Rot Of Birch Fomitopsis betulina3 September records since 2011
Fluted Bird's Nest Cyathus striatus2 September records since 2011
Usually recorded in October here:
Bearded Tooth Hericium erinaceus9 October records since 2011- Hen Of The Woods Grifola frondosa7 October records since 2011
- Giant Puffball Calvatia gigantea7 October records since 2011
- Chicken Of The Woods Laetiporus sulphureus6 October records since 2011
Walnut Mycena Mycena crocea5 October records since 2011
Late Fall Polypore Ischnoderma resinosum5 October records since 2011
Aborted Entoloma, Shrimp Of The Woods Entoloma abortivum3 October records since 2011- Eastern Stinkhorn Phallus ravenelii3 October records since 2011
Jelly Rot Phlebia tremellosa3 October records since 2011
Wood Blewit Lepista nuda3 October records since 2011
Asian Beauty Radulomyces copelandii3 October records since 2011- Dryad's Saddle Cerioporus squamosus2 October records since 2011
Usually recorded in November here:
- Oyster Mushroom Pleurotus ostreatus4 November records since 2011
- Late Fall Polypore Ischnoderma resinosum3 November records since 2011
- Bitter Oysterling Panellus stipticus2 November records since 2011
Brick Cap Hypholoma lateritium2 November records since 2011- Giant Puffball Calvatia gigantea2 November records since 2011
- Lumpy Bracket Trametes gibbosa2 November records since 2011
- Pear-Shaped Puffball Apioperdon pyriforme2 November records since 2011
Usually recorded in December here:
- Oyster Mushroom Pleurotus ostreatus5 December records across all years
- Poronidulus conchifer3 December records across all years
- Velvet Shank Flammulina velutipes3 December records across all years
- Bearded Tooth Hericium erinaceus2 December records across all years
⚠ 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.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 33 | |
| 2 | 30 | |
| 3 | 30 | |
| 4 | 21 | |
| 5 | 20 | |
| 6 | 18 | |
| 7 | 18 | |
| 8 | 17 | |
| 9 | 17 | |
| 10 | 16 | |
| 11 | 16 | |
| 12 | 15 | |
| 13 | 14 | |
| 14 | 13 | |
| 15 | 13 |
Being on this list doesn't mean a mushroom is common, easy to identify or safe. It only means it has been recorded here often.
Best months to look
Records by month, all years. Busiest: Sep, May, Oct.
Sightings map
● Each dot is a place with at least one record (rounded to about 1 km). Locations can be approximate, and many are on private land. Numbered blue circles are recent sightings, shown only to a general area of about 10 km.
Recent sightings
The 10 most recent dated records in this county, newest first. Data as of October 26, 2026. Records can take weeks or more to reach GBIF, so the newest finds may not show yet. Places are given only as a public park or forest (from the USGS Protected Areas Database) or the nearest town, and the numbered circles on the map cover a general area, not an exact spot.
- 1
Oct 4, 2026Mock Oyster Mushroom Phyllotopsis nidulansnear Lima, PA · iNaturalist photo, research grade · original record - 2Oct 4, 2026Giant Puffball Calvatia giganteanear Swarthmore, PA (location blurred by the observer) · iNaturalist photo, research grade · original record
- 3Oct 2, 2026Dryad's Saddle Cerioporus squamosusnear Swarthmore, PA · iNaturalist photo, research grade · original record
- 4Sep 30, 2026Chicken Of The Woods Laetiporus sulphureusin Glen Providence Park, PA · iNaturalist photo, research grade · original record
- 5Sep 30, 2026Hen Of The Woods Grifola frondosain Glen Providence Park, PA · iNaturalist photo, research grade · original record
- 6Sep 30, 2026Turkeytail Trametes versicolornear Swarthmore, PA · iNaturalist photo, research grade · original record
- 7Sep 30, 2026Crowded Parchment Stereum complicatumnear Swarthmore, PA · iNaturalist photo, research grade · original record
- 8
Sep 27, 2026Honey Fungus Armillaria melleanear Media, PA · iNaturalist photo, research grade · original record - 9Sep 24, 2026Golden Oyster Mushroom Pleurotus citrinopileatusnear Swarthmore, PA · iNaturalist photo, research grade · original record
- 10Sep 24, 2026Stinky Squid Pseudocolus fusiformisnear Swarthmore, PA · iNaturalist photo, research grade · original record
Many sightings are on private land. Always get the landowner's permission, and follow the rules of parks and forests, which often limit or ban collecting.
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.
How we built this page
998 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 577 CC0 and 421 CC BY 4.0. See about the data for the full citation.