Mushrooms in Waukesha 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.
Usually recorded in February here:
Milk-White Toothed Polypore Irpex lacteus5 February records since 2011
Mossy Maze Polypore Cerrena unicolor2 February records since 2011
Usually recorded in March here:
Crowded Parchment Stereum complicatum5 March records since 2011
Dryad's Saddle Cerioporus squamosus3 March records since 2011
Turkeytail Trametes versicolor3 March records since 2011
Bitter Oysterling Panellus stipticus2 March records since 2011
Red Tree Brain Fungus Peniophora rufa2 March records since 2011
Lumpy Bracket Trametes gibbosa2 March records since 2011
Usually recorded in April here:
- Poronidulus conchifer3 April records since 2011
Oak Mazegill Daedalea quercina2 April records since 2011- Turkeytail Trametes versicolor2 April records since 2011
Usually recorded in May here:
- Dryad's Saddle Cerioporus squamosus13 May records since 2011
- Turkeytail Trametes versicolor4 May records since 2011
- Crowded Parchment Stereum complicatum3 May records since 2011
Spring Polypore Lentinus arcularius2 May records since 2011
Chicken Of The Woods Laetiporus sulphureus2 May records since 2011- Milk-White Toothed Polypore Irpex lacteus2 May records since 2011
Usually recorded in June here:
Agrocybe acericola2 June records across all years
Common Porecrust, Split Gill Fungus Schizophyllum commune2 June records across all years
Protohydnum album2 June records across all years
Golden Oyster Mushroom Pleurotus citrinopileatus2 June records across all years- Dryad's Saddle Cerioporus squamosus2 June records across all years
Usually recorded in July here:
- Protohydnum album3 July records since 2011
- Turkeytail Trametes versicolor3 July records since 2011
Feltscale Inky Cap Coprinopsis variegata2 July records since 2011- Golden Oyster Mushroom Pleurotus citrinopileatus2 July records since 2011
- Common Porecrust, Split Gill Fungus Schizophyllum commune2 July records since 2011
Usually recorded in August here:
- Golden Oyster Mushroom Pleurotus citrinopileatus3 August records since 2011
- Turkeytail Trametes versicolor3 August records since 2011
Velvet Rollrim Tapinella atrotomentosa3 August records since 2011
Common Earthball Scleroderma citrinum2 August records since 2011
White Coral Jelly Fungus Sebacina sparassoidea2 August records since 2011
Common Puffball Lycoperdon perlatum2 August records since 2011- Dryad's Saddle Cerioporus squamosus2 August records since 2011
Usually recorded in September here:
Giant Puffball Calvatia gigantea4 September records since 2011- Turkeytail Trametes versicolor3 September records since 2011
- Common Puffball Lycoperdon perlatum3 September records since 2011
- Fungi Pallidohirschioporus biformis2 September records since 2011
- Chicken Of The Woods Laetiporus sulphureus2 September records since 2011
Pear-Shaped Puffball Apioperdon pyriforme2 September records since 2011
Aborted Entoloma, Shrimp Of The Woods Entoloma abortivum2 September records since 2011- Dryad's Saddle Cerioporus squamosus2 September records since 2011
Usually recorded in October here:
- Dryad's Saddle Cerioporus squamosus7 October records since 2011
- Giant Puffball Calvatia gigantea3 October records since 2011
- Common Puffball Lycoperdon perlatum2 October records since 2011
Deceiver Laccaria laccata2 October records since 2011
Hen Of The Woods Grifola frondosa2 October records since 2011
Pholiota polychroa2 October records since 2011
Fly Agaric Amanita muscaria2 October records since 2011
Deadly Galerina Galerina marginata2 October records since 2011
American Slippery Jack Suillus americanus2 October records since 2011
Velvet Shank Flammulina velutipes2 October records since 2011
Usually recorded in November here:
- Deadly Galerina Galerina marginata3 November records since 2011
Dirty Tricholoma Tricholoma terreum2 November records since 2011
Jelly Rot Phlebia tremellosa2 November records since 2011- Common Porecrust, Split Gill Fungus Schizophyllum commune2 November records since 2011
- Milk-White Toothed Polypore Irpex lacteus2 November records since 2011
- Mossy Maze Polypore Cerrena unicolor2 November records since 2011
Usually recorded in December here:
- Turkeytail Trametes versicolor8 December records since 2011
- Common Porecrust, Split Gill Fungus Schizophyllum commune4 December records since 2011
- Crowded Parchment Stereum complicatum2 December records since 2011
- Bitter Oysterling Panellus stipticus2 December records since 2011
- Vitreoporus dichrous2 December records since 2011
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 31 | |
| 2 | 30 | |
| 3 | 23 | |
| 4 | 17 | |
| 5 | 16 | |
| 6 | 14 | |
| 7 | 13 | |
| 8 | 11 | |
| 9 | 11 | |
| 10 | 9 | |
| 11 | 9 | |
| 12 | 8 | |
| 13 | 8 | |
| 14 | 7 | |
| 15 | 7 |
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, Oct, Aug.
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.
- 1
Oct 3, 2026Lawyer's Wig Coprinus comatusnear Brookfield, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 2
Sep 26, 2026Yellow-Gilled Gymnopilus Gymnopilus luteofoliusnear Menomonee Falls, WI · iNaturalist photo, research grade · original record - 3
Aug 21, 2026Cyanoboletus cyaneitinctusnear Dousman, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 4Aug 21, 2026Giant Puffball Calvatia giganteanear Dousman, WI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 5Aug 21, 2026Velvet Rollrim Tapinella atrotomentosanear Dousman, WI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 6Aug 21, 2026Velvet Rollrim Tapinella atrotomentosanear Palmyra, WI (location blurred by the observer) · iNaturalist photo, research grade · original record
- 7
Aug 21, 2026Bleeding Fairy Helmet Mycena haematopusnear Eagle, WI (location blurred by the observer) · iNaturalist photo, research grade · original record - 8Aug 12, 2026Golden Oyster Mushroom Pleurotus citrinopileatusnear Okauchee Lake, WI · iNaturalist photo, research grade · original record
- 9
Jul 10, 2026Red Gyroporus Gyroporus purpurinusnear Mukwonago, WI · iNaturalist photo, research grade · original record
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How we built this page
556 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 259 CC0 and 297 CC BY 4.0. See about the data for the full citation.