FungRadar

Foraging forecast: Sør-Trøndelag

Conditions in Sør-Trøndelag in September 2026 are middling, index 58 out of 100; of the species we model, field blewit is closest to its flush. There will be something, but you will have to look: check which of the coming days reads higher and go then.

A seven-day index for the species whose records are confirmed here — 25 of them right now. Flush phases and the factors behind the number, instead of a "chance of finding" percentage we cannot measure. Data updated 17 September 2026, 11:22 BST.

The map is built from the measurement network — one point per sizeable town and more in between. A detailed 2.5 km grid is computed for one region so far: it needs its own run for every cell.

Best today

Field Blewit

Collybia personata

Buildingconfidence 48%

Flush phase

  1. Quiet
  2. Starting
  3. Building
  4. Peak
  5. Fading

Updated 17 September 2026, 11:22 BST

Map

Where to look: Sør-Trøndelag

Values are computed at measurement points and interpolated between them. Clicking a point opens that town.

Open the interactive map

By species

The week, species by species

Each row is its own seven days. Today is outlined.

Penny Bun — botanical illustration

Penny Bun

Boletus edulis

Starting43 today

Week's best 44 — on Fridayaverage 41by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4317 Sept
  2. Fri4418 Sept
  3. Sat4319 Sept
  4. Sun4320 Sept
  5. Mon3921 Sept
  6. Tue3722 Sept
  7. Wed3623 Sept
Honey Fungus — botanical illustration

Honey Fungus

Armillaria mellea

Building44 today

Week's best 48average 45by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today4417 Sept
  2. Fri4618 Sept
  3. Sat4819 Sept
  4. Sun4720 Sept
  5. Mon4521 Sept
  6. Tue4422 Sept
  7. Wed4423 Sept
Weeping Bolete — botanical illustration

Weeping Bolete

Suillus granulatus

Starting44 today

Week's best 48average 46by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today4417 Sept
  2. Fri4518 Sept
  3. Sat4819 Sept
  4. Sun4820 Sept
  5. Mon4721 Sept
  6. Tue4522 Sept
  7. Wed4523 Sept
Oyster Mushroom — botanical illustration

Oyster Mushroom

Pleurotus ostreatus

Quiet0 today

Week's best 0average 0by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today017 Sept
  2. Fri018 Sept
  3. Sat019 Sept
  4. Sun020 Sept
  5. Mon021 Sept
  6. Tue022 Sept
  7. Wed023 Sept
Velvet Shank — botanical illustration

Velvet Shank

Flammulina velutipes

Quiet0 today

Week's best 0average 0by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today017 Sept
  2. Fri018 Sept
  3. Sat019 Sept
  4. Sun020 Sept
  5. Mon021 Sept
  6. Tue022 Sept
  7. Wed023 Sept
Brown Birch Bolete — botanical illustration

Brown Birch Bolete

Leccinum scabrum

Starting40 today

Week's best 42average 40by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today4017 Sept
  2. Fri4218 Sept
  3. Sat4219 Sept
  4. Sun4220 Sept
  5. Mon4021 Sept
  6. Tue3822 Sept
  7. Wed3823 Sept
Orange Oak Bolete — botanical illustration

Orange Oak Bolete

Leccinum aurantiacum

Starting40 today

Week's best 41 — on Saturdayaverage 39by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri4018 Sept
  3. Sat4119 Sept
  4. Sun4120 Sept
  5. Mon3821 Sept
  6. Tue3622 Sept
  7. Wed3623 Sept
Chanterelle — botanical illustration

Chanterelle

Cantharellus cibarius

Starting36 today

Week's best 36 — on Thursdayaverage 34by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3617 Sept
  2. Fri3618 Sept
  3. Sat3619 Sept
  4. Sun3420 Sept
  5. Mon3321 Sept
  6. Tue3222 Sept
  7. Wed3123 Sept
Lactarius resimus — botanical illustration

Lactarius resimus

Lactarius resimus

Building47 today

Week's best 47 — on Thursdayaverage 43by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4717 Sept
  2. Fri4718 Sept
  3. Sat4619 Sept
  4. Sun4520 Sept
  5. Mon4121 Sept
  6. Tue3922 Sept
  7. Wed3923 Sept
Saffron Milkcap — botanical illustration

Saffron Milkcap

Lactarius deliciosus

Building53 today

Week's best 54 — on Fridayaverage 51by the weekend falling

Conditions are best on Friday.

  1. Today5317 Sept
  2. Fri5418 Sept
  3. Sat5419 Sept
  4. Sun5320 Sept
  5. Mon5021 Sept
  6. Tue4822 Sept
  7. Wed4723 Sept
Bay Bolete — botanical illustration

Bay Bolete

Imleria badia

Building50 today

Week's best 50 — on Thursdayaverage 47by the weekend falling

Today is as good as it gets — conditions do not improve later this week.

  1. Today5017 Sept
  2. Fri5018 Sept
  3. Sat5019 Sept
  4. Sun4920 Sept
  5. Mon4521 Sept
  6. Tue4322 Sept
  7. Wed4223 Sept
Sheathed Woodtuft — botanical illustration

Sheathed Woodtuft

Kuehneromyces mutabilis

Starting41 today

Week's best 44average 43by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today4117 Sept
  2. Fri4218 Sept
  3. Sat4419 Sept
  4. Sun4420 Sept
  5. Mon4421 Sept
  6. Tue4222 Sept
  7. Wed4123 Sept
Field Blewit — botanical illustration

Field Blewit

Collybia personata

Building58 today

Week's best 62average 61by the weekend steady

The week is flat — no day to pick, conditions are the same throughout.

  1. Today5817 Sept
  2. Fri6018 Sept
  3. Sat6219 Sept
  4. Sun6220 Sept
  5. Mon6121 Sept
  6. Tue6122 Sept
  7. Wed6123 Sept
Wood Blewit — botanical illustration

Wood Blewit

Collybia nuda

Building54 today

Week's best 58average 56by the weekend steady

The week is flat — no day to pick, conditions are the same throughout.

  1. Today5417 Sept
  2. Fri5618 Sept
  3. Sat5819 Sept
  4. Sun5820 Sept
  5. Mon5721 Sept
  6. Tue5622 Sept
  7. Wed5623 Sept
Field Mushroom — botanical illustration

Field Mushroom

Agaricus campestris

Starting38 today

Week's best 43 — on Mondayaverage 39by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3817 Sept
  2. Fri3718 Sept
  3. Sat3819 Sept
  4. Sun4120 Sept
  5. Mon4321 Sept
  6. Tue4022 Sept
  7. Wed3823 Sept
Fairy Ring Champignon — botanical illustration

Fairy Ring Champignon

Marasmius oreades

Starting35 today

Week's best 40 — on Mondayaverage 37by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3517 Sept
  2. Fri3418 Sept
  3. Sat3619 Sept
  4. Sun3820 Sept
  5. Mon4021 Sept
  6. Tue3822 Sept
  7. Wed3623 Sept
Parasol — botanical illustration

Parasol

Macrolepiota procera

Starting40 today

Week's best 42 — on Saturdayaverage 40by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri4018 Sept
  3. Sat4219 Sept
  4. Sun4220 Sept
  5. Mon4021 Sept
  6. Tue3822 Sept
  7. Wed3723 Sept
Common Puffball — botanical illustration

Common Puffball

Lycoperdon perlatum

Starting38 today

Week's best 44 — on Mondayaverage 41by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3817 Sept
  2. Fri3818 Sept
  3. Sat4019 Sept
  4. Sun4220 Sept
  5. Mon4421 Sept
  6. Tue4222 Sept
  7. Wed4023 Sept
Red Cracking Bolete — botanical illustration

Red Cracking Bolete

Xerocomellus chrysenteron

Starting38 today

Week's best 40 — on Saturdayaverage 38by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3817 Sept
  2. Fri3918 Sept
  3. Sat4019 Sept
  4. Sun3920 Sept
  5. Mon3721 Sept
  6. Tue3522 Sept
  7. Wed3523 Sept
Bovine Bolete — botanical illustration

Bovine Bolete

Suillus bovinus

Starting41 today

Week's best 42 — on Saturdayaverage 40by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4117 Sept
  2. Fri4118 Sept
  3. Sat4219 Sept
  4. Sun4220 Sept
  5. Mon3921 Sept
  6. Tue3722 Sept
  7. Wed3623 Sept
Milk White Brittlegill — botanical illustration

Milk White Brittlegill

Russula delica

Starting36 today

Week's best 37 — on Fridayaverage 35by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3617 Sept
  2. Fri3718 Sept
  3. Sat3719 Sept
  4. Sun3620 Sept
  5. Mon3421 Sept
  6. Tue3222 Sept
  7. Wed3223 Sept
Black Morel — botanical illustration

Black Morel

Morchella elata

Quiet0 today

Week's best 0average 0by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today017 Sept
  2. Fri018 Sept
  3. Sat019 Sept
  4. Sun020 Sept
  5. Mon021 Sept
  6. Tue022 Sept
  7. Wed023 Sept
Fly Agaric — botanical illustration

Fly Agaric

Amanita muscaria

Building53 today

Week's best 55 — on Saturdayaverage 52by the weekend falling

Conditions are best on Saturday.

  1. Today5317 Sept
  2. Fri5418 Sept
  3. Sat5519 Sept
  4. Sun5420 Sept
  5. Mon5221 Sept
  6. Tue4922 Sept
  7. Wed4823 Sept
Panthercap — botanical illustration

Panthercap

Amanita pantherina

Starting42 today

Week's best 42 — on Thursdayaverage 40by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4217 Sept
  2. Fri4218 Sept
  3. Sat4219 Sept
  4. Sun4220 Sept
  5. Mon3921 Sept
  6. Tue3722 Sept
  7. Wed3623 Sept

Orange Birch Bolete

Leccinum versipelle

Starting40 today

Week's best 41 — on Saturdayaverage 39by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri4018 Sept
  3. Sat4119 Sept
  4. Sun4120 Sept
  5. Mon3821 Sept
  6. Tue3622 Sept
  7. Wed3623 Sept

Been out in Sør-Trøndelag? Tell us how it went

No sign-up, five seconds. Reports are visible to everyone and help us check the forecast — where people say “nothing out there” and the model promises a flush, the model is wrong.

How much did you find?
When were you out?

This form does not ask for coordinates. What gets published is the name, the rating and the text — nothing else.

Common questions

Are there mushrooms in Sør-Trøndelag in September 2026?

Conditions in Sør-Trøndelag in September 2026 are middling, index 58 out of 100; of the species we model, field blewit is closest to its flush. There will be something, but you will have to look: check which of the coming days reads higher and go then.

Which mushrooms are out in Sør-Trøndelag right now?

The species list for this region is built from confirmed records in GBIF. As soon as there are enough of them, the species appear here with their own forecast — we do not add a species to a region on a guess.

How is the index calculated?

An index from 0 to 100, built from the last month of weather, satellite woodland data, terrain and the seasonal window of each species. It is not a probability of finding anything: it is how well conditions match what that species needs.

When is the best day to go in Sør-Trøndelag?

Use the seven-day index on this page: pick the day with the higher number, and watch the flush phase — «Building» and «Peak» are the ones worth the drive. Today reads 58 out of 100.

The index is high but I found nothing — why?

The index reads weather and season — things that are the same for tens of kilometres around. It does not know your particular wood, and that is where the mushroom grows. The usual reasons: wrong trees — every species has its own, and no weather makes up for the wrong stand; the wood was felled recently or is young — the mycelium takes years to recover; the spot is picked out — everything near a road or a car park goes over a weekend; the flush has been taken — you came a day after those who came on time; or the flush passed and slugs and larvae got there first, which the model cannot see. The reverse holds too: a low index does not mean an empty wood. It means the conditions are against you, not that there is nothing there.

How the index is calculated, and what the model cannot promise — on the about page.