Mushrooms in Adams County, Colorado
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:
- Tulostoma fibrillosum2 January records across all years
Too few past records in February here to list species.
Too few past records in March here to list species.
Too few past records in April here to list species.
Too few past records in May here to list species.
Too few past records in June here to list species.
Too few past records in July here to list species.
Usually recorded in August here:
Corkstar Puffball Mycenastrum corium3 August records across all years- Geastrum pedicellatum2 August records across all years
Spring Polypore Lentinus arcularius2 August records across all years
Too few past records in September here to list species.
Usually recorded in October here:
Alcohol Inky Cap Coprinopsis atramentaria3 October records since 2011
Too few past records in November here to list species.
Too few past records in December here to list species.
Most-recorded species
| # | Species | Records |
|---|---|---|
| 1 | 3 | |
| 2 | 3 | |
| 3 | Geastrum pedicellatum | 2 |
| 4 | Tulostoma fibrillosum | 2 |
| 5 | 2 | |
| 6 | 2 | |
| 7 | 2 | |
| 8 | Tulostoma polymorphum | 2 |
| 9 | 2 | |
| 10 | 2 | |
| 11 | 1 | |
| 12 | Coprinellus truncorum | 1 |
| 13 | 1 | |
| 14 | 1 | |
| 15 | 1 |
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: Aug, Apr, Jun.
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
Aug 26, 2025False Parasol Chlorophyllum molybditesnear Commerce City, CO · iNaturalist photo, research grade · original record - 2
Aug 26, 2025Horse Mushroom Agaricus arvensisnear Commerce City, CO · iNaturalist photo, research grade · original record - 3
Aug 26, 2025Garland Roundhead Stropharia coronillanear Commerce City, CO · iNaturalist photo, research grade · original record - 4
May 1, 2025Lawyer's Wig Coprinus comatusin Rocky Mountain Arsenal National Wildlife Refuge, CO · iNaturalist photo, research grade · original record - 5Sep 20, 2024Lawyer's Wig Coprinus comatusnear North Washington, CO · iNaturalist photo, research grade · original record
- 6
Apr 17, 2024Salty Mushroom Agaricus bernardiinear Commerce City, CO · iNaturalist photo, research grade · original record - 7
Jul 20, 2023Melanoleuca graminicolanear Aurora, CO · museum/herbarium specimen (DBG) · original record - 8
Oct 10, 2021Brown Parasol Chlorophyllum brunneumnear Northglenn, CO · museum/herbarium specimen (DBG) · original record - 9Oct 21, 2018Alcohol Inky Cap Coprinopsis atramentarianear Northglenn, CO · museum/herbarium specimen (DBG) · original record
- 10
Oct 16, 2018Shaggy Parasol Chlorophyllum rhacodesnear Northglenn, CO · museum/herbarium specimen (DBG) · original record
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How we built this page
173 records of mushrooms, shelf fungi and polypores (class Agaricomycetes) that fall inside this county's Census boundary. Licenses: 51 CC0 and 122 CC BY 4.0. See about the data for the full citation.