King Oyster Petri Dish Agar Culture
This species generates a heavy yield with many mushrooms which are of high quality. Large caps and long, thick stems can be achieved, creating the optimum, meaty mushroom that it is known to be. Mushroom bodies may last up to 14 days after harvest in the fridge.
Agar cultures are to be inoculated onto sterilised grain. Post colonisation of the sterilised grain, the grain is to be used as grain spawn to inoculate a suitable substrate. The substrate and the grain are not included, only the petri dish agar culture.
Our colonised petri dishes are prepared in our sterile laboratory on nutrient-rich agar. We always test batches of petri dishes before dispatch. These strains have undergone thorough cultivation and testing processes to ensure their excellent performance and are the strains that we use in-house.
We aim to have all our petri dishes ready to dispatch whenever there is an order, but because it is a live mycelium sometimes dispatch may take longer. We will get in touch if this is the case.
Note: The petri dish you receive may look different to the one in the picture - if you have any doubts about the petri dish, please contact us. The petri dish is fully colonised and should be used as soon as you receive it. The described information has been tested thoroughly and the optimum conditions have been listed. Because of this, results may vary if the appropriate conditions are not met.
Storage: We recommend using the petri dish as soon as you receive it. Do not store below 8°C.
Cultivation Information
Please note that the petri dish should be used to inoculate and colonise sterilised grain. The colonised grain will then act as a vehicle to transport the mycelium onto the "Recommended substrate".
Species: Pleurotus eryngii
Recommended substrate: 75% Hardwood/straw (wheat), 20% Bran, 5% Sunflower pellets or similar oily substrate
Fruiting duration: 4-6 weeks
Yield: Approx. 200-250g of fresh mushrooms per kg of our recommended wet substrate (1st flush); pre-inoculation
Inoculation % of wet substrate: 2-10%; higher inoculation % leads to a shorter incubation period. Do not exceed 10%.Our recommended substrate for this species can be found here.
Incubation Conditions
Room temperature: 23-25 °C
Substrate temperature: 25-28 °C
Duration: 15-25 days
Ripening duration: 40 daysFruiting Conditions
Induction: Decrease temperature to <18 °C @ 90-95% RH
Optimum room conditions: 12-15 °C @ >95% RH
Carbon dioxide concentration: <1200ppm
Light levels: 800-1500 lux
Flushes: 2-3 flushes @ 1-2 weeks interval with 90% RH in between flushesBulk Orders
If you wish to purchase a large quantity of petri dishes, please contact us.
Delivery Information
Please read the delivery information here to find information regarding dispatch times and more.
