Mushrooms in Walworth County, Wisconsin
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.
Too few past records in January here to list species.
Too few past records in February here to list species.
Usually recorded in March here:
Common Porecrust, Split Gill Fungus Schizophyllum commune2 March records since 2011
Usually recorded in April here:
- Common Porecrust, Split Gill Fungus Schizophyllum commune2 April records since 2011
Usually recorded in May here:
Spring Polypore Lentinus arcularius5 May records across all years
Bonnet Mycena Mycena galericulata3 May records across all years
Dryad's Saddle Cerioporus squamosus3 May records across all years
Brown Hay Cap Panaeolina foenisecii2 May records across all years
Diamond Polypore Neofavolus alveolaris2 May records across all years- Pseudohydropus floccipes2 May records across all years
Mossy Maze Polypore Cerrena unicolor2 May records across all years- Cystoagaricus populinus2 May records across all years
Usually recorded in June here:
Blackening Wax-Cap Hygrocybe conica2 June records across all years- Common Porecrust, Split Gill Fungus Schizophyllum commune2 June records across all years
Crown-Tipped Coral Artomyces pyxidatus2 June records across all years
Usually recorded in July here:
- Raduliporus aneirinus7 July records across all years
Tomentella ferruginea6 July records across all years
Rosy Crust Peniophora incarnata6 July records across all years- Thelephora albidobrunnea4 July records across all years
- Tomentella lapida4 July records across all years
Jellied False Coral Sebacina schweinitzii4 July records across all years
Smoky Bracket Bjerkandera adusta3 July records across all years
Toothed Crust Xylodon radula3 July records across all years
Crowded Parchment Stereum complicatum3 July records across all years
Baltazaria galactina2 July records across all years
Junghuhnia nitida2 July records across all years
Floury Oyster Hohenbuehelia petaloides2 July records across all years
Usually recorded in August here:
Lactifluus pergamenus3 August records across all years
Black Trumpet Craterellus cornucopioides2 August records across all years
Foetid Russula Russula foetens2 August records across all years
Blackening Russula Russula adusta2 August records across all years- Mossy Maze Polypore Cerrena unicolor2 August records across all years
Leathery-Veiled Bolete Paragyrodon sphaerosporus2 August records across all years
Bradley Lactifluus volemus2 August records across all years
Parrot Mushroom Gliophorus psittacinus2 August records across all years
Usually recorded in September here:
- Mossy Maze Polypore Cerrena unicolor3 September records across all years
- Acanthophysium oakesii3 September records across all years
Purple-And-White Deceiver Laccaria ochropurpurea3 September records across all years
Artist's Bracket Ganoderma applanatum2 September records across all years
Golden Bracket Fuscoporia gilva2 September records across all years- Tomentella punicea2 September records across all years
- Black Trumpet Craterellus cornucopioides2 September records across all years
- Lactifluus pergamenus2 September records across all years
Ringed Milk-Cap Lactarius zonarius2 September records across all years
Fleecy Milkcap Lactifluus vellereus2 September records across all years
Lactarius cinereus2 September records across all years
Potato Earthball Scleroderma bovista2 September records across all years
Usually recorded in October here:
- Bonnet Mycena Mycena galericulata3 October records across all years
- Mossy Maze Polypore Cerrena unicolor3 October records across all years
- Purple-And-White Deceiver Laccaria ochropurpurea3 October records across all years
Bitter Oysterling Panellus stipticus2 October records across all years- Scleroderma flavidum2 October records across all years
Common Collybia Gymnopus dryophilus2 October records across all years- Black Trumpet Craterellus cornucopioides2 October records across all years
Deceiver Laccaria laccata2 October records across all years
Meadow Waxcap Cuphophyllus pratensis2 October records across all years
Handsome Club Clavulinopsis laeticolor2 October records across all years
Green Cheese Polypore Niveoporofomes spraguei2 October records across all years
Laeticutis cristata2 October records across all years
Usually recorded in November here:
Dendrothele nivosa2 November records across all years
Too few past records in December here to list species.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 11 | |
| 2 | 11 | |
| 3 | 9 | |
| 4 | 8 | |
| 5 | 8 | |
| 6 | 7 | |
| 7 | 7 | |
| 8 | 7 | |
| 9 | 7 | |
| 10 | 6 | |
| 11 | 6 | |
| 12 | 6 | |
| 13 | 5 | |
| 14 | 5 | |
| 15 | 5 |
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: Jul, Oct, Sep.
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 9 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.
- 1Sep 25, 2026Vitreoporus dichrousnear Lauderdale Lakes, WI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 2
Sep 7, 2026Bay Polypore Picipes badiusin Kettle Moraine State Forest-Southern Unit, WI · iNaturalist photo, research grade · original record - 3Aug 21, 2026Parrot Mushroom Gliophorus psittacinusnear East Troy, WI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 4
Oct 11, 2025Giant Puffball Calvatia giganteanear Lake Geneva, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 5
Aug 23, 2025American Slippery Jack Suillus americanusnear Eagle, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 6
Aug 23, 2025Amethyst Deceiver Laccaria amethystinanear East Troy, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 7
Aug 23, 2025Giant Club Clavariadelphus pistillarisnear Lauderdale Lakes, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 8Aug 23, 2025Purple-And-White Deceiver Laccaria ochropurpureanear Lauderdale Lakes, WI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 9Jun 28, 2024Common Porecrust, Split Gill Fungus Schizophyllum communenear Bohners Lake, WI · iNaturalist photo, research grade · original record
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How we built this page
490 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 433 CC0 and 57 CC BY 4.0. See about the data for the full citation.