PilzSpurTREES · WEATHER · MUSHROOM HABITATS
Frankfurt am Main
Choose your mushrooms. Compare where trees and weather offer suitable conditions.
A score out of 100 points, not a percentage chance of finds. Dark green: very good. Light green: good. Yellow: moderate. Orange: poor. Grey: no data. Weather and habitat do not guarantee finds.
Click a coloured forest area to see its conditions and stories.
Forest paths are off by default. Details appear from zoom level 12.
Best conditions nearby
Compare forests side by side
Choose up to three forests using Compare in the list or in the forest details.
All columns use the same mushroom group and date. Weather comes from a regional model. Scores are not probabilities of finding mushrooms.
When is a good time to visit?
Scroll sideways to see more days.
What the map is based on
OPEN DATA · CLEAR LIMITATIONSMushroom picking with PilzSpur
The search area extends up to 50 km from Frankfurt am Main. Forests and paths come from OpenStreetMap; the source may contain gaps.
Mapped tree groups from DLR satellite data for 2022 are combined with regional weather. Weather values are regional estimates, not measurements of moisture on the forest floor.
The score describes conditions, not confirmed finds or permission to enter or pick mushrooms. Check local rules and signs. Exact observation locations remain private.
Good to know
How much does PilzSpur cost?
You can use the map for free. No purchase or contribution is required. German, Polish and English are available. If PilzSpur helps you, you can optionally support its development with a coffee.
How is habitat suitability assessed?
Each group combines the habitat profiles listed in its details. Milk caps use pine, spruce and fir; slippery jacks use pine and larch. Suitable host trees are combined according to their mapped share. Weather considers rain, soil temperature, moisture trends and water balance, including earlier conditions with a delay of 3 to 12 days: 75% earlier and 25% current conditions. These weights are model assumptions, not measured growth times. The model has not been validated against independent trip results. A score of 80 / 100 does not mean an 80% chance of finding mushrooms.
What the map does not know yet
The assessment covers the species in the group details, not every edible mushroom. The full DGfM list is linked. OSM may omit forests and paths. DLR tree data is from 2022. Direct measurements of forest floor moisture, soil chemistry and verified finds in each forest are missing. Low scores and missing data do not prove that mushrooms are absent.
Open the DGfM positive listData, sources and updates
PilzSpur retrieves regional weather on opening and while the map is in use when data is two hours old or from the previous day. The browser retrieves free weather data directly. Cached records keep their actual retrieval time. The open map checks regularly and when you return to the tab. Failed updates preserve the latest valid copy. After 72 hours the map shows the last saved historical assessment with its reference date. It is not a current forecast. Missing days are never filled with invented weather. Rain through yesterday is included in historical totals. Rain for today and later days is a model forecast, not a measurement in the forest. Tree data refers to 2022.
Bank Danych o Lasach · DLR · CC BY 4.0 · BKG · Hessen Mobil · Open Meteo · OpenStreetMap © contributors · Esri
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