Boletus edulis
In Switzerland, porcini occur in broadleaf, conifer and mixed woodland near suitable partner trees. The main season is usually summer into autumn, with substantial shifts by elevation and weather. Not every bolete is edible.
Broadleaf and conifer forests, often with beech, oak, spruce and fir.
Summer into autumn, varying widely with elevation and weather.
Understand the link between porcini and trees
Porcini are mycorrhizal fungi. Their mycelium exchanges resources with the roots of suitable trees, including beech, oak, spruce, fir or pine depending on the stand. The presence of one partner tree is only the first filter.
Woodland age, continuous forest soil, litter and low compaction also matter. A young plantation, compacted path or dry clearing may fit less well than a nearby mature, structured stand.
Read a fruiting window without counting days
There is no fixed number of days between rainfall and fruiting. A shower on dried ground may remain superficial, while a damp sequence followed by moderate temperatures can preserve cool conditions beneath the canopy for longer.
Elevation, aspect and wind shift the window further. Compare woodland types and altitude bands, then check whether litter remains springy and soil retains moisture without becoming saturated.
Identification and lookalikes
Bitter bolete, Satan's bolete, scarletina bolete, bay bolete and other boletes. Pores, stem pattern, cut surface, smell and habitat must be assessed together.
The map helps you search. Never identify.
Cepello does not identify mushrooms and never confirms that a specimen is edible. Have your entire collection checked by an official inspection service.
Uncertainty or mild symptoms: Tox Info Suisse 145. Acute symptoms: 144.Read the safety guide →FAQ
Frequently asked questions
Are all boletes porcini?
No. Bolete describes a broad group. Porcini are only part of it, and not every bolete is edible.
Where can porcini be found in Switzerland?
Look for suitable woodland near beech, oak, spruce, fir or pine, then compare soil, elevation, moisture and recent weather.
Rain, soil, trees and season
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SwissFungi, WSL · VAPKO · Tox Info Suisse
Checked on 25.08.2026. An online profile can never confirm identity or edibility. Keep species separate and have everything intended for consumption inspected.