FungRadar

Foraging forecast: Grad Zagreb

Conditions in Grad Zagreb in September 2026 are middling, index 57 out of 100; of the species we model, penny bun 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.

Biting insects: mosquitoes — noticeable. What to bring.

Best today

Penny Bun

Boletus edulis

Buildingconfidence 49%

Flush phase

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

Updated 17 September 2026, 11:22 BST

Map

Where to look: Grad Zagreb

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

Building57 today

Week's best 65 — on Tuesdayaverage 62by the weekend rising

Conditions are best on Tuesday.

  1. Today5717 Sept
  2. Fri6118 Sept
  3. Sat6219 Sept
  4. Sun6320 Sept
  5. Mon6421 Sept
  6. Tue6522 Sept
  7. Wed6423 Sept
Honey Fungus — botanical illustration

Honey Fungus

Armillaria mellea

Starting48 today

Week's best 54 — on Wednesdayaverage 49by the weekend rising

Conditions are best on Wednesday.

  1. Today4817 Sept
  2. Fri4618 Sept
  3. Sat4619 Sept
  4. Sun4820 Sept
  5. Mon4821 Sept
  6. Tue5222 Sept
  7. Wed5423 Sept
Weeping Bolete — botanical illustration

Weeping Bolete

Suillus granulatus

Building56 today

Week's best 60 — on Tuesdayaverage 57by the weekend steady

Conditions are best on Tuesday.

  1. Today5617 Sept
  2. Fri5318 Sept
  3. Sat5419 Sept
  4. Sun5620 Sept
  5. Mon5821 Sept
  6. Tue6022 Sept
  7. Wed6023 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

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. Fri5418 Sept
  3. Sat5419 Sept
  4. Sun5620 Sept
  5. Mon5621 Sept
  6. Tue5822 Sept
  7. Wed5823 Sept
Orange Oak Bolete — botanical illustration

Orange Oak Bolete

Leccinum aurantiacum

Building54 today

Week's best 60 — on Tuesdayaverage 57by the weekend rising

Conditions are best on Tuesday.

  1. Today5417 Sept
  2. Fri5618 Sept
  3. Sat5619 Sept
  4. Sun5820 Sept
  5. Mon5821 Sept
  6. Tue6022 Sept
  7. Wed5923 Sept
Chanterelle — botanical illustration

Chanterelle

Cantharellus cibarius

Starting45 today

Week's best 50 — on Sundayaverage 49by the weekend rising

Conditions are best on Sunday.

  1. Today4517 Sept
  2. Fri4818 Sept
  3. Sat4819 Sept
  4. Sun5020 Sept
  5. Mon5021 Sept
  6. Tue5022 Sept
  7. Wed5023 Sept
Lactarius resimus — botanical illustration

Lactarius resimus

Lactarius resimus

Starting46 today

Week's best 52 — on Tuesdayaverage 49by the weekend rising

Conditions are best on Tuesday.

  1. Today4617 Sept
  2. Fri4818 Sept
  3. Sat4819 Sept
  4. Sun4820 Sept
  5. Mon4821 Sept
  6. Tue5222 Sept
  7. Wed5223 Sept
Saffron Milkcap — botanical illustration

Saffron Milkcap

Lactarius deliciosus

Starting50 today

Week's best 57 — on Wednesdayaverage 53by the weekend rising

Conditions are best on Wednesday.

  1. Today5017 Sept
  2. Fri5218 Sept
  3. Sat5119 Sept
  4. Sun5020 Sept
  5. Mon5221 Sept
  6. Tue5622 Sept
  7. Wed5723 Sept
Bay Bolete — botanical illustration

Bay Bolete

Imleria badia

Building56 today

Week's best 64 — on Tuesdayaverage 61by the weekend rising

Conditions are best on Tuesday.

  1. Today5617 Sept
  2. Fri6018 Sept
  3. Sat6019 Sept
  4. Sun6120 Sept
  5. Mon6221 Sept
  6. Tue6422 Sept
  7. Wed6323 Sept
Sheathed Woodtuft — botanical illustration

Sheathed Woodtuft

Kuehneromyces mutabilis

Starting46 today

Week's best 46 — on Thursdayaverage 44by the weekend steady

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

  1. Today4617 Sept
  2. Fri4018 Sept
  3. Sat4219 Sept
  4. Sun4520 Sept
  5. Mon4621 Sept
  6. Tue4622 Sept
  7. Wed4623 Sept
Field Blewit — botanical illustration

Field Blewit

Collybia personata

Starting33 today

Week's best 38 — on Wednesdayaverage 33by the weekend rising

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

  1. Today3317 Sept
  2. Fri3018 Sept
  3. Sat3019 Sept
  4. Sun3220 Sept
  5. Mon3421 Sept
  6. Tue3622 Sept
  7. Wed3823 Sept
Wood Blewit — botanical illustration

Wood Blewit

Collybia nuda

Starting40 today

Week's best 45 — on Wednesdayaverage 40by the weekend rising

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

  1. Today4017 Sept
  2. Fri3618 Sept
  3. Sat3619 Sept
  4. Sun3820 Sept
  5. Mon3921 Sept
  6. Tue4322 Sept
  7. Wed4523 Sept
Field Mushroom — botanical illustration

Field Mushroom

Agaricus campestris

Building52 today

Week's best 52 — on Thursdayaverage 44by the weekend falling

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

  1. Today5217 Sept
  2. Fri4018 Sept
  3. Sat4019 Sept
  4. Sun4420 Sept
  5. Mon4421 Sept
  6. Tue4522 Sept
  7. Wed4623 Sept
Fairy Ring Champignon — botanical illustration

Fairy Ring Champignon

Marasmius oreades

Building50 today

Week's best 50 — on Thursdayaverage 41by the weekend falling

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

  1. Today5017 Sept
  2. Fri3818 Sept
  3. Sat3819 Sept
  4. Sun4020 Sept
  5. Mon4021 Sept
  6. Tue4122 Sept
  7. Wed4223 Sept
Parasol — botanical illustration

Parasol

Macrolepiota procera

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. Fri5218 Sept
  3. Sat5219 Sept
  4. Sun5520 Sept
  5. Mon5521 Sept
  6. Tue5622 Sept
  7. Wed5523 Sept
Common Puffball — botanical illustration

Common Puffball

Lycoperdon perlatum

Building50 today

Week's best 50 — on Thursdayaverage 41by the weekend falling

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

  1. Today5017 Sept
  2. Fri3718 Sept
  3. Sat3819 Sept
  4. Sun4020 Sept
  5. Mon4021 Sept
  6. Tue4122 Sept
  7. Wed4223 Sept
Red Cracking Bolete — botanical illustration

Red Cracking Bolete

Xerocomellus chrysenteron

Building51 today

Week's best 56 — on Tuesdayaverage 54by the weekend steady

Conditions are best on Tuesday.

  1. Today5117 Sept
  2. Fri5218 Sept
  3. Sat5219 Sept
  4. Sun5420 Sept
  5. Mon5521 Sept
  6. Tue5622 Sept
  7. Wed5523 Sept
Bovine Bolete — botanical illustration

Bovine Bolete

Suillus bovinus

Starting48 today

Week's best 53 — on Tuesdayaverage 51by the weekend steady

Conditions are best on Tuesday.

  1. Today4817 Sept
  2. Fri4918 Sept
  3. Sat5019 Sept
  4. Sun5120 Sept
  5. Mon5121 Sept
  6. Tue5322 Sept
  7. Wed5223 Sept
Milk White Brittlegill — botanical illustration

Milk White Brittlegill

Russula delica

Building50 today

Week's best 58 — on Tuesdayaverage 55by the weekend rising

Conditions are best on Tuesday.

  1. Today5017 Sept
  2. Fri5318 Sept
  3. Sat5419 Sept
  4. Sun5620 Sept
  5. Mon5621 Sept
  6. Tue5822 Sept
  7. Wed5623 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

Building54 today

Week's best 60 — on Tuesdayaverage 57by the weekend rising

Conditions are best on Tuesday.

  1. Today5417 Sept
  2. Fri5618 Sept
  3. Sat5519 Sept
  4. Sun5620 Sept
  5. Mon5621 Sept
  6. Tue6022 Sept
  7. Wed6023 Sept
Panthercap — botanical illustration

Panthercap

Amanita pantherina

Building54 today

Week's best 59 — on Tuesdayaverage 57by the weekend steady

Conditions are best on Tuesday.

  1. Today5417 Sept
  2. Fri5518 Sept
  3. Sat5619 Sept
  4. Sun5820 Sept
  5. Mon5821 Sept
  6. Tue5922 Sept
  7. Wed5823 Sept

Orange Birch Bolete

Leccinum versipelle

Building54 today

Week's best 60 — on Tuesdayaverage 57by the weekend rising

Conditions are best on Tuesday.

  1. Today5417 Sept
  2. Fri5618 Sept
  3. Sat5619 Sept
  4. Sun5820 Sept
  5. Mon5821 Sept
  6. Tue6022 Sept
  7. Wed5923 Sept

Numbers are taken at the measurement point nearest the centre of the region — a real calculation at one place, not an average over the whole area. A town an hour away will read differently, and its own page says so.

Been out in Grad Zagreb? 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 Grad Zagreb in September 2026?

Conditions in Grad Zagreb in September 2026 are middling, index 57 out of 100; of the species we model, penny bun 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 Grad Zagreb 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 Grad Zagreb?

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 57 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.