Yellow Oyster Grain Spawn
This species generates a colourful, heavy yield of bright yellow mushrooms that are of high quality. Tend to grow on stems as a large, tight cluster. Highly sought-after due to their different and unique taste compared to other oyster mushrooms. Mushroom bodies may last up to 10 days after harvest in the fridge.
Grain spawn is to be inoculated onto a suitable substrate and we advise inoculating onto a recommended substrate as described in the 'Cultivation Information' section of this page. The substrate is not included.
Our grain formula contains the optimum levels of nitrogen required for quick growth of mycelium as well as a high number of inoculation points. Weights of bags are approximated.
We aim to have all our grain spawn 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.
As grain spawn is usually used by those with prior experience, we do not include any instructions with it. If you require any guidance on how to utilise the spawn, please contact us.
Note: We break all of our grain spawn before shipping for your convenience. The grain is fully colonised and can 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 grain spawn as soon as you receive it, however, if you need to store it for a longer period of time, store at 2 °C for up to 1 month.
Spawn Options
We take pride in producing our own high-quality grain spawn at our UK farm. We also offer grain spawn from Mycelia, one of Europe's leading professional mushroom spawn producers, available as an additional option for growers. Both options offer quality grain spawn, giving you flexibility in bag size.
1.5kg (Merit Mushrooms): Our own grain spawn, freshly produced at our UK farm.
5L (Mycelia): Grain spawn supplied in a Mycelia 5-litre bag, with an approximate weight of 2.8-3.2kg. Actual weight may vary slightly between bags.Cultivation Information
Species: Pleurotus citrinopileatus
Recommended substrate: Hardwood/straw (wheat)
Fruiting duration: 3-6 weeks
Yield: Approx. 150-200g 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: 22-24 °C
Substrate temperature: 27-32 °C
Duration: 12-14 days
Fruiting Conditions
Induction: Decrease temperature to 15-20 °C @ 90-95% RH
Optimum room conditions: 17-22 °C @ 85% RH
Carbon dioxide concentration: <1000ppm
Light levels: 800-1500 lux
Flushes: 2-3 flushes @ 7-10 days interval with 90-95% RH in between flushes
Bulk Orders
We offer quantity-based discounts on both our own 1.5kg grain spawn and 5L Mycelia grain spawn. Varieties can be mixed within each product range, with pricing depending on the total quantity ordered.
1.5kg Grain Spawn (Merit Mushrooms)
Our own grain spawn, freshly produced at our UK farm.Quantity
Price per bag
1-3 bags
£14.99
4-7 bags
£13.49
8-19 bags
£11.99
20+ bags
£10.49
5L Grain Spawn (Mycelia)
Supplied in Mycelia 5-litre bags, with an approximate weight of 2.8-3.2kg per bag.Quantity
Price per bag
1-3 bags
£28.80
4-9 bags
£20.16
10-29 bags
£15.85
30+ bags
£14.41
To take advantage of these prices, please contact us with your preferred varieties and quantities, and we will be happy to help arrange your order. For larger or regular orders, please get in touch to discuss your requirements.
Delivery Information
Please read the delivery information here to find information regarding dispatch times and more.
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