Updated 22 September 2026
Are Bay Bolete out in Uppsala yet?
The best time for bay bolete in Sweden is August to November, with the peak normally in the middle of that range. Today they’re at 58% and looking good in Uppsala
It fruits after late summer and autumn rain once soil temperatures have cooled, typically from August through November. A good soaking followed by mild, humid days brings flushes, and it tolerates cooler conditions better than many boletes, often fruiting late into the season.
The cap is dark chestnut to bay brown, slightly sticky when wet and matt when dry, usually 5 to 15 cm across. The underside has pores, not gills, which are pale yellow turning greenish and bruise blue-green when pressed; the stem is brownish, paler than the cap, with fine streaks and no ring.
Use fresh within a day or two, kept loosely in a paper bag in the fridge rather than sealed plastic. It dries very well sliced thin on a rack or low oven, and the rehydrated pieces plus their soaking liquid keep good flavour; sliced caps can also be sauteed and frozen.
It can be confused with the cep (Boletus edulis), which is also edible, but the bay bolete is darker brown and its pores bruise blue-green whereas cep pores do not. No common European bolete with which it is confused is deadly, but always check that the pores are not red or orange and that any blueing is slow, to rule out the few unpleasant blue-staining boletes.
Uppsala sits on the flat, fertile Uppland plain, low-lying farmland threaded by the Fyrisån river and the long gravel eskers left by the ice age. South and east the land gives way to the bays of Lake Mälaren and the Baltic coast, while gentle forested rises take over to the north. Boreal conifer forest dominates, mostly Norway spruce and Scots pine mixed with birch, aspen and alder. Mushrooms favour the mossy spruce stands, the damp birch edges and the bogs and pine heaths common across reserves like Hågadalen-Nåsten and Norra Lunsen.
The climate is humid continental, with cold, snowy winters and mild summers. The decisive rains come in late summer and early autumn, and it is this damp warmth that triggers the main fungal flush. Foraging here is easy and rewarding thanks to the right to roam, with chanterelles arriving around midsummer and porcini, funnel chanterelles and other autumn species following into October. Spruce and birch woods within easy reach of the city make Uppsala a generous region for beginners and seasoned pickers alike.
FAQ
Is it mushroom season in Uppsala, Sweden right now?
For bay bolete in Uppsala, Sweden, the typical season is August to November, and today the live forecast reads 58% with conditions looking good this September. So yes or no depends on the day and the weather, which is exactly what the forecast tracks.
Does ShroomCast tell me if a mushroom is safe to eat or identify it for me?
No. ShroomCast only forecasts timing, so it tells you when bay bolete are likely to be fruiting in Uppsala, Sweden. It does not identify mushrooms, and it cannot tell you whether anything you pick is safe to eat. Always confirm your own identification from a reliable source before eating anything.
How does the live bay bolete forecast for Uppsala, Sweden work?
We take the usual bay bolete season for Uppsala, Sweden (August to November) and weigh it against the weather right now and over the last few days. That gives you one live number, today 58% and looking good, plus a 14-day outlook and a normal-year line to compare against.
When is bay bolete season in Uppsala, Sweden?
In Uppsala, Sweden, bay bolete season usually runs August to November. The exact start shifts year to year with rain and temperature, so some years they show up early and some years late. Right now (September) the live forecast for Uppsala, Sweden reads 58% and conditions are looking good.
Where do bay bolete grow in Uppsala, Sweden?
Grows in conifer woodland, especially with pine and spruce, and sometimes under beech and oak on acidic, often sandy or mossy ground. It is mycorrhizal and frequently fruits on or beside rotting stumps and conifer litter. They tend to come back to the same kinds of ground year after year, so once you find good cover it is worth checking again. ShroomCast does not share exact spots; it tells you the timing for Uppsala, Sweden so you know when it is worth heading out.
See the live regional forecast in the ShroomCast app.
This page shows today. The app gives you the full 14-day outlook for your area and all 14 species, so you can pick the right day before you drive out.
Scale: 0-20% very low · 20-40% low · 40-60% moderate · 60-80% high · 80-100% excellent. ShroomCast forecasts fruiting probability from weather, soil, forests and years of observations – a guide, not a guarantee of finds.
ShroomCast forecasts the region and the time of year. It cannot identify mushrooms for you, so confirm any species with a reliable source before eating it.