Yellow dots on agar. This is no good right?

Answer: not good for sure! Most likely it's bacterial contamination. However, in this case you can cut a healthy sample of mycelium and transfer it to new agar plate

Uploaded on Oct 3, 2025

Open full-size image [1848 x 4000 pixels] Yellow dots on agar. This is no good right?

Shroomok's choice

Govee Digital Hygrometer Indoor Thermome...

Coospider 6W UV Light Ozone Free,253.7nm...

Stainless Steel Tea Ball Strainer - 2 Pa...

Desk Lamp with Flexible Gooseneck - Port...

NutriChef Electric Countertop Food Dehyd...

WD-40

Briess Dried Malt Extract- Golden Light-...

VIVOSUN Heat Mat 10"x 20.75" with Digita...

Pasteurized Casing Mix

Inkbird Digital Temperature Controller

Restaurantware 12 Inch Impulse Sealer 1...

23 Qt. Denali Pressure Cooker

Comments

Add comment

Load more photos

Tags

🍄
Guide
- Data Charts
- 🍄
  DIY
  9 items
  - 🍄
    Cooling
    1 item
    - Peltier
  - 🍄
    Heating
    1 item
    - Peltier
  - How to and Q&A
  - Incubator
  - Laminar Flow Hood
  - Still Air Box (SAB)
  - Tips and Tricks
- 🍄
  Growing Problems
  22 items
  - Abort
  - Bruising
  - Dark spots (sporulation)
  - 🍄
    Contamination
    14 items
  - Metabolites
  - Mutation
  - Overlay
  - Side & bottom pinning
- 🍄
  Mushroom Consumption
  4 items
  - Microdosing
  - Recipes
  - Psychedelic
  - Trip
- 🍄
  Cultivation
  39 items
  - Agar
    1 item
    - Mushroom Cloning
  - Colonization
  - Experiments
  - 🍄
    Harvest
    10 items
    - Art
    - First grow
    - Flush
      1 item
      - Rehydration aka Flushing
    - Funny Shrooms
    - Giant
    - Beautiful Magic Mushrooms
    - MushLove
    - Odd Shrooms
    - Tiny Shrooms
  - Inoculation
  - Liquid culture
  - Microscopy
  - Fruiting
  - 🍄
    TEKs
    9 items
    - All in One
    - Bottle-Tek
    - GrowTent
    - GrowBox
    - GrowKit
    - MonoTub
      2 items
      - DubTub
      - Shoebox
    - PF Tek
  - Substrate
    3 items
  - Outdoor
  - Pinning
  - Spore print
  - Spore swab
  - Spore syringe
  - Sterilization
🍄
Species & Strains
- 🍄
  Gourmet & Medicinal
  11 items
  - 🍄
    Edible
    6 items
  - 🍄
    Medicinal
    3 items
- Panaeolus
- 🍄
  Psilocybe
  179 items
  - 🍄
    Magic Truffles
    2 items
    - Psilocybe Mexicana/Galindoi
    - Psilocybe Tampanensis
  - 🍄
    Psilocybe Cubensis
    169 items
    - AA+ (Albino A+)
      1 item
      - Rusty Whyte
    - Ajax
    - Albino Louisiana
      1 item
      - Albino Bayou Beringei
    - Amazonian
    - B+ (B positive)
      16 items
      - El Choco (Choco Rojo)
        2 items
        
        Chocolate Krinkle
        
        Mr. Peanut
      - Golden Mammoth
      - Tidal Wave
        10 items
        
        Albino Riptide
        
        ARC (Albino Roller Coaster)
        
        ChodeWave
        2 items
        
        ACW (Albino ChodeWave)
        1 item
        
        SV-10
        
        Enigma
        
        Ocean Gates
        
        STAKZ
        
        Toque F7
        
        Trinity
      - Z strain
    - BHT (Ban Hua Thanon)
    - Blue Meanie (Cubensis)
      1 item
      - Juke's Peak
    - BMC (Blue Magnolia Classic)
      3 items
      - BMR (Blue Magnolia Rust)
      - Steel Magnolia
        1 item
        
        Full Metal Ghost
    - Brazil
    - Burma
    - Cambodian
      1 item
      - Avery's Albino
    - Colombian
      4 items
      - Colombian Gold strain
        1 item
        
        White Colombian Gold
      - CRS (Colombian Rust Spore)
        1 item
        
        Rusty Whyte
    - Costa Rican
    - E4K strain
    - Ecuador
    - Entheogen Explosion
    - F+ (Florida White)
    - Flea Market
    - Golden Teacher
      30 items
      - Alacabenzi
      - Cascadian Teacher
      - White Golden Teacher (Leucistic GT)
      - TAT (True Albino Teacher)
        26 items
        
        Albino Riptide
        
        Blue Moon
        
        Clockwork Orange
        
        Flipper F6
        
        Gandalf
        2 items
        
        Gorilla Wizard
        
        White Wizard
        
        Jack Frost
        
        MVP strain
        1 item
        
        Bluey Vuitton
        
        Pearly Gates
        2 items
        
        Lucid Gates
        1 item
        
        Ocean Gates
        
        Roger Rabbit
        
        TAT Ghost
        4 items
        
        Full Metal Ghost
        
        Ghost Rider
        
        🍄
        TAT Black Cap
        
        White Wizard
        
        TAT Smurf
        
        TATTOO
        
        Yeti
        4 items
        
        Avalanche
        
        Maki
        
        Nutcracker
        
        SV-10
    - Hanoi
    - Hawaiian
    - Hillbilly
      3 items
      - Hillbilly Pancake
      - Hillbilly Pumpkin
      - Kotaro
    - JMF (Jedi Mind F**k)
      2 items
      - Juke's Peak
      - Mac Galactic
    - KSC (Koh Samui Classic)
      3 items
      - KSSS (Koh Samui Super Strain)
        2 items
        
        KAPE (KSSS x APE)
        
        STAKZ
    - Luminous Lucy
    - Malabar
      1 item
      - Shakti
    - Mazatapec
    - Menace
    - Mexican (MexiCube)
    - Oak Ridge
    - Orissa
    - PE (Penis Envy)
      57 items
      - APE (Albino Penis Envy)
        17 items
        
        Albino Bayou Beringei
        
        APE Revert
        
        BAPER
        
        Bluescaria
        
        Casper
        
        ChodeWave
        2 items
        
        ACW (Albino ChodeWave)
        1 item
        
        SV-10
        
        Haole
        
        Jack Frost
        
        KAPE (KSSS x APE)
        
        Makilla Gorilla
        2 items
        
        Gorilla Wizard
        
        Nakilla
        
        Nebula
        
        SNAPE (Starry Night Albino Penis Envy)
        
        White Bunny
      - AllNaPe
      - Steel Magnolia
        1 item
        
        Full Metal Ghost
      - Kotaro
      - McKennaii
        1 item
        
        Ganesh
      - Melmac
        18 items
        
        Avalanche
        
        Blue Moon
        
        DC Mak
        3 items
        
        Makilla Gorilla
        2 items
        
        Gorilla Wizard
        
        Nakilla
        
        Gandalf
        2 items
        
        Gorilla Wizard
        
        White Wizard
        
        Great Northern White
        
        Mac Galactic
        
        Maki
        
        MVP strain
        1 item
        
        Bluey Vuitton
        
        Omni
        
        Pearly Gates
        2 items
        
        Lucid Gates
        1 item
        
        Ocean Gates
      - Mr. Peanut
      - ODPE (Old Dirty Penis Envy)
      - PE6 (Penis Envy 6)
      - Tidal Wave
        10 items
        
        Albino Riptide
        
        ARC (Albino Roller Coaster)
        
        ChodeWave
        2 items
        
        ACW (Albino ChodeWave)
        1 item
        
        SV-10
        
        Enigma
        
        Ocean Gates
        
        STAKZ
        
        Toque F7
        
        Trinity
    - PF Albino
    - 🍄
      Phobos (Albino Mars)
      1 item
      - Natal Moon
    - Pink Buffalo
    - Lizard King
    - Puerto Rican
      2 items
      - Chupacabra strain
      - RedBoy
    - Purple Mystic
    - South American
    - Stargazer
    - Tapalpa
    - Thai Lipa Yai
      1 item
      - Iceberg
  - Psilocybe Cyanescens
  - P. Ochraceocentrata (formely P. Natalensis)
    4 items
- Wild