Slippery Jack Season in Dalarna: When to Go (August to November)
🇸🇪 Dalarna, SwedenLive forecast

Slippery Jack forecast for Dalarna, Sweden

35%
Updated: 15 October 2026

Slippery Jack: building.

Dalarna
Temperature, 14 days
7°C

Average 6°, from 1° to 12°

2 Oct15 Oct
Rain, 14 days
87mm

Rainy days: 8. Wettest: 8 Oct

2 Oct15 Oct
Trees for Slippery Jack
6,173woods
Pine100%

Share of wood area by the tree slippery jack grows with in Dalarna

Height of the woods
190–645m

where most of them lie

600–800 m
13%
400–600 m
32%
200–400 m
43%
0–200 m
11%

When will Slippery Jack appear in Dalarna?

Slippery Jack usually come up in Dalarna from August to November, and right now they’re at 35% and building.

It fruits after warm late-summer and autumn rain, typically when day temperatures sit around 10 to 20C and the ground stays damp. A good soaking followed by mild nights usually brings flushes within a week or two.

It has a distinct membranous ring or partial veil remnant on the stem, an unusual feature among the slippery-capped Suillus boletes.

Always peel off the slimy cap skin and remove the spongy pore layer first, as both can upset the stomach. Slice and fry in butter for a soft side dish, add to risotto or stews where the texture suits, or dry the cleaned pieces and grind into a savoury mushroom powder for stocks and sauces.

Other Suillus boletes such as the larch bolete (Suillus grevillei) and weeping bolete, all of which are also edible, so there are no dangerous poisonous lookalikes. The slimy brown cap, yellow pores and ringed stem set it apart from any toxic gilled mushroom.

Dalarna is a region of rolling forested uplands centred on Lake Siljan and the Dalälven river valleys, rising toward the Scandinavian mountains and open fells in the remote northwest. Lakes, bogs and low hills break up an otherwise heavily wooded interior. The province is dominated by boreal coniferous forest of Scots pine and Norway spruce mixed with birch and aspen. Chanterelles favour mossy spruce and birch ground, while porcini and other boletes thrive on the drier pine heaths and forest edges.

Dalarna has a cold, fairly continental climate with long snowy winters and short warm summers. Reliable late-summer and autumn rainfall keeps the forest floor moist, which suits a long fungal season. This is classic Swedish mushroom country with vast accessible forest under allemansrätten, the right of public access. Expect strong harvests of chanterelles, funnel chanterelles and porcini from late summer into the first frosts of autumn.

FAQ

How does the live slippery jack forecast for Dalarna, Sweden work?

Every mushroom has its own machine-learning models, trained on years of mushroom records and calibrated for each region. Every day they read the weather of the last three weeks in Dalarna, Sweden: temperature, rain, humidity, soil temperature and moisture. Together with the time of year and the kind of woods and soil there, that gives the chance of slippery jack fruiting today. Right now it is 35% and building. The full 14-day outlook is in the app.

When is slippery jack season in Dalarna, Sweden?

In Dalarna, Sweden, slippery jack 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 (October) the live forecast for Dalarna, Sweden reads 35% and conditions are building.

Where do slippery jack grow in Dalarna, Sweden?

Grows in conifer woods, almost always with pine, on sandy or poor soil and often along forest tracks and clearings. Common in young plantations and appears in groups. 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 Dalarna, Sweden so you know when it is worth heading out.

How do I know slippery jack season has started in Dalarna, Sweden?

The start moves from year to year with the weather, and the first flushes usually appear somewhere in the August to November window. The clearest sign is the live forecast lifting off zero into ‘just starting’ or ‘building‘. For Dalarna, Sweden it currently sits at 35% and is building.

Are slippery jack out near me right now in Dalarna, Sweden?

Today the slippery jack forecast for Dalarna, Sweden is 35% and conditions are building. That is a live read for the region this October, and it shifts with the weather rather than following a fixed calendar. It tells you if it is worth heading out in Dalarna, Sweden right now.

What should I look for this week for slippery jack in Dalarna, Sweden?

This week in Dalarna, Sweden the forecast is 35% and building. Grows in conifer woods, almost always with pine, on sandy or poor soil and often along forest tracks and clearings. Common in young plantations and appears in groups. The 14-day outlook in the app shows whether conditions are climbing toward a flush or easing off, so you can pick your day.

Is it mushroom season in Dalarna, Sweden right now?

For slippery jack in Dalarna, Sweden, the typical season is August to November, and today the live forecast reads 35% with conditions building this October. 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 slippery jack are likely to be fruiting in Dalarna, 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.

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.

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