FungRadar

Foraging forecast: Kostroma Oblast

Yes — conditions in Kostroma Oblast in September 2026 are good, index 66 out of 100, with saffron milkcap furthest along. That is a reading of weather, woodland and season: it does not promise you a full basket, but this is one of the weeks worth going out.

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

Saffron Milkcap

Lactarius deliciosus

Buildingconfidence 50%

Flush phase

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

Updated 17 September 2026, 11:22 BST

Map

Where to look: Kostroma Oblast

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

Building54 today

Week's best 58 — on Wednesdayaverage 53by the weekend steady

Conditions are best on Wednesday.

  1. Today5417 Sept
  2. Fri5218 Sept
  3. Sat4819 Sept
  4. Sun5220 Sept
  5. Mon5421 Sept
  6. Tue5622 Sept
  7. Wed5823 Sept
Honey Fungus — botanical illustration

Honey Fungus

Armillaria mellea

Building58 today

Week's best 58average 56by the weekend steady

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

  1. Today5817 Sept
  2. Fri5818 Sept
  3. Sat5619 Sept
  4. Sun5420 Sept
  5. Mon5421 Sept
  6. Tue5522 Sept
  7. Wed5623 Sept
Weeping Bolete — botanical illustration

Weeping Bolete

Suillus granulatus

Building63 today

Week's best 63 — on Thursdayaverage 59by the weekend falling

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

  1. Today6317 Sept
  2. Fri6218 Sept
  3. Sat6019 Sept
  4. Sun5620 Sept
  5. Mon5621 Sept
  6. Tue5822 Sept
  7. Wed5823 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

Building60 today

Week's best 60 — on Thursdayaverage 56by the weekend falling

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

  1. Today6017 Sept
  2. Fri5818 Sept
  3. Sat5619 Sept
  4. Sun5420 Sept
  5. Mon5421 Sept
  6. Tue5522 Sept
  7. Wed5523 Sept
Orange Oak Bolete — botanical illustration

Orange Oak Bolete

Leccinum aurantiacum

Building56 today

Week's best 56average 54by the weekend steady

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

  1. Today5617 Sept
  2. Fri5418 Sept
  3. Sat5219 Sept
  4. Sun5220 Sept
  5. Mon5321 Sept
  6. Tue5422 Sept
  7. Wed5623 Sept
Chanterelle — botanical illustration

Chanterelle

Cantharellus cibarius

Starting45 today

Week's best 49 — on Wednesdayaverage 45by the weekend steady

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

  1. Today4517 Sept
  2. Fri4418 Sept
  3. Sat4219 Sept
  4. Sun4420 Sept
  5. Mon4521 Sept
  6. Tue4622 Sept
  7. Wed4923 Sept
Lactarius resimus — botanical illustration

Lactarius resimus

Lactarius resimus

Building54 today

Week's best 54average 53by the weekend steady

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

  1. Today5417 Sept
  2. Fri5418 Sept
  3. Sat5019 Sept
  4. Sun5420 Sept
  5. Mon5321 Sept
  6. Tue5422 Sept
  7. Wed5423 Sept
Saffron Milkcap — botanical illustration

Saffron Milkcap

Lactarius deliciosus

Building66 today

Week's best 66average 64by the weekend steady

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

  1. Today6617 Sept
  2. Fri6518 Sept
  3. Sat6219 Sept
  4. Sun6420 Sept
  5. Mon6321 Sept
  6. Tue6422 Sept
  7. Wed6423 Sept
Bay Bolete — botanical illustration

Bay Bolete

Imleria badia

Building62 today

Week's best 62average 61by the weekend steady

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

  1. Today6217 Sept
  2. Fri6218 Sept
  3. Sat5819 Sept
  4. Sun6220 Sept
  5. Mon6221 Sept
  6. Tue6222 Sept
  7. Wed6223 Sept
Sheathed Woodtuft — botanical illustration

Sheathed Woodtuft

Kuehneromyces mutabilis

Building53 today

Week's best 53 — on Thursdayaverage 47by the weekend falling

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

  1. Today5317 Sept
  2. Fri5218 Sept
  3. Sat5019 Sept
  4. Sun4320 Sept
  5. Mon4421 Sept
  6. Tue4422 Sept
  7. Wed4423 Sept
Field Blewit — botanical illustration

Field Blewit

Collybia personata

Building60 today

Week's best 60 — on Thursdayaverage 56by the weekend falling

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

  1. Today6017 Sept
  2. Fri6018 Sept
  3. Sat5819 Sept
  4. Sun5420 Sept
  5. Mon5421 Sept
  6. Tue5422 Sept
  7. Wed5223 Sept
Wood Blewit — botanical illustration

Wood Blewit

Collybia nuda

Building58 today

Week's best 58 — on Thursdayaverage 54by the weekend steady

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

  1. Today5817 Sept
  2. Fri5718 Sept
  3. Sat5619 Sept
  4. Sun5120 Sept
  5. Mon5221 Sept
  6. Tue5222 Sept
  7. Wed5423 Sept
Field Mushroom — botanical illustration

Field Mushroom

Agaricus campestris

Building53 today

Week's best 53 — on Thursdayaverage 47by the weekend falling

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

  1. Today5317 Sept
  2. Fri5118 Sept
  3. Sat5019 Sept
  4. Sun4120 Sept
  5. Mon4421 Sept
  6. Tue4522 Sept
  7. Wed4623 Sept
Fairy Ring Champignon — botanical illustration

Fairy Ring Champignon

Marasmius oreades

Building53 today

Week's best 53 — on Thursdayaverage 46by the weekend falling

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

  1. Today5317 Sept
  2. Fri5118 Sept
  3. Sat5019 Sept
  4. Sun4020 Sept
  5. Mon4221 Sept
  6. Tue4422 Sept
  7. Wed4423 Sept
Parasol — botanical illustration

Parasol

Macrolepiota procera

Building58 today

Week's best 58 — on Thursdayaverage 52by the weekend falling

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

  1. Today5817 Sept
  2. Fri5518 Sept
  3. Sat5219 Sept
  4. Sun4820 Sept
  5. Mon5021 Sept
  6. Tue5022 Sept
  7. Wed5223 Sept
Common Puffball — botanical illustration

Common Puffball

Lycoperdon perlatum

Building54 today

Week's best 54 — on Thursdayaverage 47by the weekend falling

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

  1. Today5417 Sept
  2. Fri5218 Sept
  3. Sat5119 Sept
  4. Sun4220 Sept
  5. Mon4221 Sept
  6. Tue4422 Sept
  7. Wed4423 Sept
Red Cracking Bolete — botanical illustration

Red Cracking Bolete

Xerocomellus chrysenteron

Building55 today

Week's best 55 — on Thursdayaverage 52by the weekend steady

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

  1. Today5517 Sept
  2. Fri5418 Sept
  3. Sat5019 Sept
  4. Sun5120 Sept
  5. Mon5221 Sept
  6. Tue5222 Sept
  7. Wed5323 Sept
Bovine Bolete — botanical illustration

Bovine Bolete

Suillus bovinus

Building54 today

Week's best 54average 51by the weekend steady

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

  1. Today5417 Sept
  2. Fri5318 Sept
  3. Sat5019 Sept
  4. Sun5020 Sept
  5. Mon5021 Sept
  6. Tue5022 Sept
  7. Wed5023 Sept
Milk White Brittlegill — botanical illustration

Milk White Brittlegill

Russula delica

Building51 today

Week's best 53 — on Wednesdayaverage 50by the weekend steady

Conditions are best on Wednesday.

  1. Today5117 Sept
  2. Fri5018 Sept
  3. Sat4619 Sept
  4. Sun4920 Sept
  5. Mon5021 Sept
  6. Tue5122 Sept
  7. Wed5323 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

Building65 today

Week's best 65average 62by the weekend steady

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

  1. Today6517 Sept
  2. Fri6418 Sept
  3. Sat6219 Sept
  4. Sun6120 Sept
  5. Mon6121 Sept
  6. Tue6222 Sept
  7. Wed6223 Sept
Panthercap — botanical illustration

Panthercap

Amanita pantherina

Building59 today

Week's best 59 — on Thursdayaverage 56by the weekend steady

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

  1. Today5917 Sept
  2. Fri5818 Sept
  3. Sat5419 Sept
  4. Sun5420 Sept
  5. Mon5421 Sept
  6. Tue5622 Sept
  7. Wed5623 Sept

Orange Birch Bolete

Leccinum versipelle

Building56 today

Week's best 56average 54by the weekend steady

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

  1. Today5617 Sept
  2. Fri5418 Sept
  3. Sat5219 Sept
  4. Sun5220 Sept
  5. Mon5321 Sept
  6. Tue5422 Sept
  7. Wed5623 Sept

Been out in Kostroma Oblast? 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 Kostroma Oblast in September 2026?

Yes — conditions in Kostroma Oblast in September 2026 are good, index 66 out of 100, with saffron milkcap furthest along. That is a reading of weather, woodland and season: it does not promise you a full basket, but this is one of the weeks worth going out.

Which mushrooms are out in Kostroma Oblast 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 Kostroma Oblast?

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 66 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.