Updated 11 September 2026
Are Porcini out in Greater London yet?
Porcini usually come up in Greater London from August to November, and right now they’re at 49% and looking good.
Fruits after warm, humid spells when soil temperatures sit in the mid teens Celsius and a good soaking rain follows a warm period. A typical trigger is heavy rain after several warm days, with flushes appearing roughly one to two weeks later.
Brown bun shaped cap, often greasy when damp. The underside has a sponge of pores, white at first then turning yellowish to olive, never red. The thick bulbous stem is pale with a fine raised white network near the top, and the flesh is white and does not change colour when cut. Smell is pleasant and nutty.
Slice young firm caps thin and fry in butter with garlic and parsley, or add to risotto and pasta sauces. Older or wormy specimens are best dried and ground into a powder to deepen stocks, soups and gravies.
Can be confused with the bitter bolete (Tylopilus felleus), which has a darker net on the stem, pinkish pores when mature and a strongly bitter taste, and with red pored boletes. Avoid any bolete with red or orange pores or flesh that stains strongly blue.
Greater London occupies the broad, low-lying floor of the Thames Basin, straddling the tidal River Thames and its tributaries like the Lea and Wandle. Beyond the built-up core, the land rises gently into wooded commons and green-belt fringes such as Hampstead Heath and the Epping ridge. Ancient woods and royal parks dominate the green spaces here, with oak, beech, birch and hornbeam, plus famous old pollards in Epping Forest and sweet chestnut on the heaths. Look for fungi among leaf litter under the trees, on old hardwood logs, and in the unimproved grassland of commons like Richmond Park and Wimbledon Common, where waxcaps appear.
London has a mild, temperate maritime climate, slightly warmer and drier than the surrounding countryside thanks to the urban heat island. Rainfall is moderate but spread through the year, and damp, mild autumns reliably trigger fungal flushes. Foraging in London means working the large parks, heaths and ancient commons rather than wild country, so expect competition and local picking restrictions in many royal parks. Autumn brings a good variety in the better woodlands, but always check the rules for each site before collecting.
FAQ
Is it mushroom season in Greater London, England right now?
For porcini in Greater London, England, the typical season is August to November, and today the live forecast reads 49% 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 porcini are likely to be fruiting in Greater London, England. 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 porcini forecast for Greater London, England work?
We take the usual porcini season for Greater London, England (August to November) and weigh it against the weather right now and over the last few days. That gives you one live number, today 49% and looking good, plus a 14-day outlook and a normal-year line to compare against.
When is porcini season in Greater London, England?
In Greater London, England, porcini 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 Greater London, England reads 49% and conditions are looking good.
Where do porcini grow in Greater London, England?
Grows in mycorrhizal partnership with trees, especially under pine, spruce, birch, beech and oak, on well drained soil. Found in conifer and broadleaf woodland and along woodland edges and tracks. 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 Greater London, England 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.