Grow Sow Greener
Blue Oytser Liquid Culture -10ml Syringes
Blue Oytser Liquid Culture -10ml Syringes
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Blue Oyster Liquid Culture – 10 ml Sterile Syringe
Species: Pleurotus ostreatus var. columbinus | Prepared in the UK
Blue Oyster produces deep blue pins that mature to steel‑grey shelves on cooler fruiting cycles. It’s a reliable, high‑yielding oyster well suited to small farms, home grows and local food projects.
About This Culture
This 10 ml syringe contains actively growing Blue Oyster mycelium in a nutrient broth, produced under sterile workflow. Use it to inoculate grain jars or bags, transfer to agar, or expand to fresh liquid culture under clean conditions.
Included
- 1 × 10 ml Blue Oyster liquid culture syringe
- 1 × sterile needle
- 1 × alcohol wipe
- 1 × natural hemp bag (outer packaging)
Reusable Hemp Bag
The syringe and wipe ship inside an undyed hemp bag. Feel free to fill the bag with a substrate of your choice (e.g., coffee grounds mixed with sawdust) before pasteurising to create a small, plastic‑free gift grow kit for a friend or classroom project.
Use
- Shake to disperse mycelium.
- Clean injection point (grain bag port or jar lid) with the alcohol wipe.
- Attach sterile needle; flame if working outside filtered air.
- Inject 1–2 ml per grain jar or ~3–5 ml per 1 kg grain bag (adjust to your workflow).
- Incubate grain at 20–24 °C until colonised; shake once ~30–50 % if desired.
- Spawn to supplemented sawdust (hardwood + bran) at ~10–20 % spawn.
- For colour: fruit blocks at 15–18 °C with high humidity and fresh air.
Note: Cooler fruiting temps deepen the blue pigment; warmer fruiting lightens caps.
Storage
Store refrigerated at 2–6 °C. Best within 2–3 weeks; typically viable up to ~2 months unopened. Do not freeze.
Batch Notes
- Small‑lot production; All cultures teted on agar checked for purity before.
- Light sediment is normal—shake before use.
Why Blue Oyster Works in Local Food Systems
Fast colonisation and the ability to fruit on sawdust by‑products make Blue Oyster a good fit for short supply chains—grow close to where it’s eaten, reduce food miles and turn woody waste into fresh produce.
Lead‑time: Made in small batches. If marked back‑order, please check the current lead‑time before ordering.
Shipping
Shipping
Delivery Costs
Our shipping is broken down into two categories and are dispatched the same or next day as standard.
1. Unlimited "Small" (Garden) Seed Packets:
- Including wooden plant markers and sprouting bags.
- £1.99 - Standard Delivery 2 - 4 business days.
- £4.90 Express Delivery 1 - 3 business days
2. Everything Else - Sprouting and Microgreen Seeds, Growing Equipment, Gifts and Grow Kits:
UK Mainland.
- £3.85 - Standard Delivery (2 - 4 business days) on orders between 0 and 2kg.
- £6.50 - Next Day Courier Service on orders 0 - 4.5kg.
- £8.95 - Next Day Courier Service on orders over 4.5kg.
- Contact us for a quote on orders over 26kgs.
Ireland, Northern Ireland, Isle of Man, Guernsey and Jersey.
- £9.45 - Standard Delivery (2 - 4 business days) on orders between 0 and 2kg.
- £23.50 - Standard Delivery on orders 2kg - 26kg.
- Contact us for a quote on orders over 26kg.
The EU, Switzerland and Rest of World.
Get in touch for equipment sales to the EU and the rest of the world for a competitive shipping quote. Unfortunately we cannot yet post seeds outside the UK.
Delivery and Packaging
All products are packaged plastic free as standard. Your garden seeds are sealed for freshness inside white glassine envelopes which are a water/vapour resistant compostable paper product whilst your Microgreen and Sprouting Seeds arrive in resealable zip lock pouches made from GMO free vegetable starch which are further heat sealed to ensure these great products reach you safely!
Returns Policy
Returns Policy
We hope you are loving your purchase however we understand that sometimes things don't go as planned and returns and refunds are necessary. Please refer to the following return and refund policies at growsowgreener.co.uk.
My product is damaged defective or you shipped me the wrong product.
We're sorry about that and understand your frustration! We would love to offer you a refund or a replacement. Please contact us at hi@growsowgreener.co.uk within 30 days of purchase for a full refund or replacement.
I ordered the wrong product or simply changed my mind.
No worries, we will refund you the full amount (minus the shipping charges) provided the items are returned in new condition and in original packaging. Once received we will issue your refund however you will be responsible for return shipping costs for non defective products.
Please post to:
Grow Sow Greener
RETURNS (order number)
5 Longfields
West Alvington
Devon TQ73QG
UK
Guaranteed to grow promise.
Should you have absolutely any problems issues or difficulties getting your seeds to germinate or problems/queries regarding our grow kits or equipment, please get in touch at hi@growsowgreener.co.uk and we will strive to help you out via email, call or video call.
All our seeds and products have been tested here by us however if we still cant help you get growing we will offer a free replacement.
Unfortunately, we cannot accept returns on gift cards.
