A foraging companion

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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
Saffron milkcapLactarius deliciosus
edible
Saffron milkcapLactarius deliciosus
Photo: (c) Alan Rockefeller, some rights reserved (CC BY)
Habitat
under pines
mixed forests
Season
from August to November
Russulaceae
4–15 cm
Season
EndingPast the peak. The season usually lasts until early November.
Today · 22–28 Oct63% of peak
how often reportedpeak
Season
Aug–Nov
Peak
Sep–Oct
Reports
144from Poland, few
Risk window
Fool's webcap grows at the same timeBoth species grow together for about 10 wk a year. Most strongly from mid-September to mid-October.
Curve from 144 observations (iNaturalist, Poland), smoothed week by week. It shows when foragers most often report the species, not how much of it grows.
Key features
Cap orange with darker concentric zones, depressed in the center, margin inrolled. Gills carrot orange; stem often with darker pits ('eyes'). Milk carrot orange, does NOT turn green right away (or only very slowly). Mycorrhizal only with pine.
Similar (be careful)Confusions documented in our database
Fool's webcapCortinarius orellanus
deadly
The saffron milkcap has orange MILK when broken and concentric rings on the cap; the fool's webcap has no milk and has cobweb-like veils on the stem. The milk test decides.
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Grzybiarz
Grzybiarz is a foraging assistant; the decision to harvest is yours.
© 2026 GrzybiarzVersion 0.0.1 · f66d236
Mleczaj rydz (Lactarius deliciosus) — Edible · Grzybiarz