When Do Slippery Jack Come Up in Jämtland?
🇸🇪 Jämtland, SwedenLive forecast

Slippery Jack forecast for Jämtland, Sweden

0%
Updated: 16 October 2026

Slippery Jack: just starting.

Jämtland
Temperature, 14 days
6°C

Average 6°, from 1° to 11°

3 Oct16 Oct
Rain, 14 days
24mm

Rainy days: 6. Wettest: 15 Oct

3 Oct16 Oct
Trees for Slippery Jack
10,649woods
Pine100%

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

Height of the woods
305–700m

where most of them lie

600–800 m
19%
400–600 m
36%
200–400 m
43%

How are Slippery Jack doing in Jämtland this October?

This week’s slippery jack forecast for Jämtland, Sweden reads 0% and just starting.

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.

Strictly associated with pines, so look in conifer plantations and natural pine woods, often on sandy or poor acidic soil. It favours forest edges, paths, grassy verges and young plantations rather than deep shade.

A decent edible with a mild flavour, good in mixed dishes, soups and sauces rather than as the star. Always peel off the slimy cap skin, which can otherwise cause loose stools, and discard the spongy pore layer on older specimens.

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.

Jämtland is an inland province built around the great lake Storsjön, where rolling forested hills and river valleys rise westward into the bare alpine fells along the Norwegian border. Between the woods lie open bogs, mires and grazing pastures, with no coastline anywhere in the region. The land is dominated by boreal taiga of Norway spruce and Scots pine, mixed with birch and the mountain birch belt at higher elevations. Spruce stands, mossy pine heaths and damp birch woodland are the prime ground for chanterelles, boletes and other porcini-family mushrooms.

The climate is continental and subarctic, with long cold winters, short cool summers and a brief growing season. Rainfall comes mainly in late summer, and the moist, cool autumn nights suit fungi well even if the season is short. Foraging here means vast, lightly populated forest with generous space and the right to roam, though the harvest window is narrow and weather-dependent. Expect chanterelles and boletes in good years, with the best picking from August into a frost-shortened September.

FAQ

Is it mushroom season in Jämtland, Sweden right now?

For slippery jack in Jämtland, Sweden, the typical season is August to November, and today the live forecast reads 0% with conditions just starting 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 Jämtland, 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 slippery jack forecast for Jämtland, 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 Jämtland, 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 0% and just starting. The full 14-day outlook is in the app.

When is slippery jack season in Jämtland, Sweden?

In Jämtland, 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 Jämtland, Sweden reads 0% and conditions are just starting.

Where do slippery jack grow in Jämtland, 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 Jämtland, Sweden so you know when it is worth heading out.

How do I know slippery jack season has started in Jämtland, 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 Jämtland, Sweden it currently sits at 0% and is just starting.

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

Today the slippery jack forecast for Jämtland, Sweden is 0% and conditions are just starting. 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 Jämtland, Sweden right now.

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

This week in Jämtland, Sweden the forecast is 0% and just starting. 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.

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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