A foraging companion

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Identify.
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Grzybiarz is a mobile app for mushroom foragers. Its on-device AI helps you spot fruiting bodies in the leaf litter and suggests a species from a photo, and the app keeps a private map of your finds. Everything runs on your phone and works fully offline in the forest without signal.

Species atlas
Meadow MushroomAgaricus campestris
edible
Meadow MushroomAgaricus campestris
Photo: (c) Thomas Mesaglio, some rights reserved (CC BY)
Habitat
meadows, pastures
parks, treelines
Season
from June to October
Agaricaceae
4–12 cm
Season
EndingPast the peak. The season usually lasts until late October.
Today · 22–28 Oct74% of peak
how often reportedpeak
Season
Jun–Oct
Peak
Aug–Oct
Reports
769Poland and neighbours
Risk window
Death Cap grows at the same timeBoth species grow together for about 14 wk a year. Most strongly from mid-August to late September.
Curve from 769 observations (GBIF: Poland, Czechia, Slovakia, Germany), smoothed week by week. It shows when foragers most often report the species, not how much of it grows.
Key features
Cap white to cream, smooth or slightly fibrillose, hemispherical, becoming flattened. Gills pink at first, then chocolate brown; stem with a narrow, disappearing ring; flesh white, slightly pinkish when cut, smell mushroomy with a hint of anise.
Similar (be careful)Confusions documented in our database
DeathcapAmanita phalloides
deadly
The Meadow Mushroom has pink gills (young) or chocolate gills (mature) and no volva; the Deathcap has gills that are always white and a volva at the base. Always check the gill color and the base of the stem.
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Grzybiarz
Grzybiarz is a foraging assistant; the decision to harvest is yours.
© 2026 GrzybiarzVersion 0.0.1 · f66d236
Pieczarka łąkowa (Agaricus campestris) — Edible · Grzybiarz