Updated 22 September 2026
How are Slippery Jack doing in Kalmar this September?
This week’s slippery jack forecast for Kalmar, Sweden reads 53% and looking good. The 14-day outlook decides whether to go now or wait, so check https://shroomcast.net/forecast/slippery-jack-forecast-for-kalmar-sweden/ before you set out
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.
In the same pine woods and season look for other Suillus such as larch bolete and weeping bolete, plus saffron milkcaps and the occasional bay bolete or porcini on richer patches. False chanterelles and various brittlegills often share the same acidic ground.
Use fresh within a day or two as the slime makes it perish quickly; peel and clean before chilling. It dries well once peeled and de-pored, and the dried slices or powder keep for months in an airtight jar; it can also be cooked and then frozen.
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.
Kalmar stretches along Sweden’s southeastern Baltic coast, forming the eastern edge of Småland together with the long, flat island of Öland across the Kalmar Sound. It is mostly low, gently undulating country: forested inland with scattered lakes and marshes, giving way to a fertile coastal plain and Öland’s open limestone alvar. Coniferous forest of pine and spruce dominates the mainland interior, but Kalmar is Sweden’s most oak-rich county, with noble broadleaf woods of oak, beech and hazel groves along the coastal plain and on Öland. These old deciduous stands, along with mossy spruce forest and birch edges, are the prime ground for mushrooms.
This is one of the driest, sunniest corners of Sweden, sheltered by Öland and tempered by the Baltic, often with early-summer drought in a normal year. Good fungal flushes therefore depend heavily on late-summer and autumn rain rather than steady moisture. Expect a season that hinges on rain: in a wet autumn the oak woods and conifer forest can be excellent, while a dry summer can hold things back. The mix of rich deciduous habitats and ordinary spruce forest gives variety, from chanterelles and porcini to oak-loving specialities.
FAQ
Where do slippery jack grow in Kalmar, 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 Kalmar, Sweden so you know when it is worth heading out.
How do I know slippery jack season has started in Kalmar, Sweden?
Season usually kicks off after a warm spell followed by steady rain, with the first flushes appearing somewhere in the August to November window. The clearest sign is the live forecast lifting off zero into ‘just starting’ or ‘building’. For Kalmar, Sweden it currently sits at 53% and is looking good.
Are slippery jack out near me right now in Kalmar, Sweden?
Today the slippery jack forecast for Kalmar, Sweden is 53% and conditions are looking good. That is a live read for the region this September, and it shifts with the weather rather than following a fixed calendar. It tells you if it is worth heading out in Kalmar, Sweden right now.
What should I look for this week for slippery jack in Kalmar, Sweden?
This week in Kalmar, Sweden the forecast is 53% and looking good. 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 on the page shows whether conditions are climbing toward a flush or easing off, so you can pick your day.
Is it mushroom season in Kalmar, Sweden right now?
For slippery jack in Kalmar, Sweden, the typical season is August to November, and today the live forecast reads 53% with conditions looking good this September. So yes or no depends on the day and the weather, which is exactly what the forecast tracks.
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.