Updated 13 September 2026
Is it Slippery Jack season in Alpes-Maritimes right now?
Slippery Jack usually come up in Alpes-Maritimes from August to November, and right now they’re at 38% 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.
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.
Alpes-Maritimes rises steeply from the Mediterranean shore of the Cote d’Azur to the high peaks of the Mercantour, where the Cime du Gelas exceeds 3000 metres. Between coast and crest lie the limestone Prealps, the deep valleys of the Var, Tinee, Vesubie and Roya, and dramatic gorges cut through red and grey rock. The coastal belt carries Aleppo and maritime pine, holm oak and cork oak amid garrigue and terraced olive groves. Mid-slopes hold downy oak, sweet chestnut and beech, while the Mercantour’s heights are clothed in Scots pine, larch and mountain pine. This mosaic of acid chestnut and calcareous oak makes rich, varied fungal ground.
The coast is Mediterranean, with hot dry summers and mild winters, and heavy rains arriving in autumn from September into November. Inland and upward the climate turns alpine, colder and snow-bound in winter. This steep gradient staggers the mushroom season, from warm lowland flushes to late high-country fruitings. Under Mediterranean pines the saffron milk cap is a staple, alongside pine boletes and, in warm oak woods, the prized Caesar’s mushroom. Chestnut and beech slopes yield ceps and golden chanterelles, black trumpets in the shade, while the larch stands high in the Mercantour give their own boletes.
FAQ
Are slippery jack out near me right now in Alpes-Maritimes, France?
Today the slippery jack forecast for Alpes-Maritimes, France is 38% and conditions are building. 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 Alpes-Maritimes, France right now.
What should I look for this week for slippery jack in Alpes-Maritimes, France?
This week in Alpes-Maritimes, France the forecast is 38% 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 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 Alpes-Maritimes, France right now?
For slippery jack in Alpes-Maritimes, France, the typical season is August to November, and today the live forecast reads 38% with conditions building 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 slippery jack are likely to be fruiting in Alpes-Maritimes, France. 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 Alpes-Maritimes, France work?
We take the usual slippery jack season for Alpes-Maritimes, France (August to November) and weigh it against the weather right now and over the last few days. That gives you one live number, today 38% and building, plus a 14-day outlook and a normal-year line to compare against.
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.