Sporeless Oyster Mushroom Liquid Culture Syringe

Species: Pleurotus ostreatus (sporeless cultivar)
Common Names: Sporeless Oyster Mushroom
Culture Origin: USA

Sporeless Oyster Mushroom Liquid Culture contains actively growing mycelium of Pleurotus ostreatus, a specialty cultivar selectively developed to release virtually no spores during fruiting. It produces the same tender texture and mild, savory flavor prized in classic oyster mushrooms, but with a cleaner harvesting experience and reduced exposure to airborne spores, a known irritant for growers who spend extended time around fruiting mushrooms.

Beyond its practical growing advantages, Sporeless Oyster is naturally rich in dietary fiber, protein, B vitamins, essential minerals, antioxidants, and beta-glucans. Like other oyster mushrooms, it has attracted considerable scientific interest for its naturally occurring bioactive compounds and their potential roles in supporting immune function, cardiovascular health, antioxidant activity, and overall wellness. Modern commercial genetics have resolved the lower yields seen in early sporeless strains, making this cultivar both a practical and rewarding choice for gourmet mushroom cultivation.

Each liquid culture syringe contains actively growing mycelium from a carefully selected culture, providing a more consistent starting point than working from spores. It is ideal for expanding onto agar plates, preparing additional liquid cultures, or inoculating grain spawn, making it an excellent starting point for gourmet mushroom cultivation.

What You Receive:

• One freshly prepared 10 mL or 20 mL liquid culture syringe
• Syringe supplied sterile, closed, and securely capped
• One sterile needle
• One alcohol preparation wipe

Freshly Prepared and Contamination-Screened:

Every syringe is prepared fresh under sterile conditions once your order is received. Before shipment, a sample from each batch is transferred onto sterile agar in a Petri dish and observed during a quality-control screening period to verify the absence of contamination.

Please allow 3–5 business days for this contamination-screening process to be completed before your order is dispatched.

Quality Guarantee:

If your liquid culture syringe is confirmed to be contaminated upon arrival, contact us promptly with clear photographs. We will review the claim and, if confirmed, provide a replacement at no additional charge.

Proper sterile technique must be used after opening, as contamination introduced during handling, inoculation, storage, or cultivation is outside our control.

Typical Fruiting Time:

Under optimal cultivation conditions, Sporeless Oyster typically produces its first harvest approximately 2–3 weeks after substrate inoculation, depending on the substrate, incubation temperature, humidity, and environmental conditions.

How to Inoculate Grain Spawn:

1. Shake the syringe well to spread the mycelium evenly.
2. Swab the injection port of your grain bag or jar with the alcohol wipe.
3. Attach the sterile needle. If you are inoculating several bags or jars, use a fresh sterile needle for each one.
4. Push the needle through the self-healing port and inject 2.5–5 mL per grain bag, or 1–2 mL per jar.
5. Pull the needle out. The port closes on its own, so there is nothing to seal.
6. Gently tilt and turn the bag or jar so the culture spreads through the grain.
7. Label it with the date and the strain.
8. Incubate out of direct light until the grain is fully white. Most species colonize well at 21–24°C (70–75°F), and colonization time varies by species and strain.
9. Don't break and shake until it's at least 60% colonized. Breaking and shaking too early is the most common cause of contamination. Once it's past 60%, you can gently break up the grain to spread the mycelium and speed up full colonization.

Storage:

Keep the liquid culture syringe refrigerated (2–8°C) and protected from direct light. The culture may be stored for up to 6 months under refrigeration, although we recommend using it as soon as practical for the most vigorous growth.

Do not freeze. Gently shake the syringe before use to evenly redistribute the mycelium.

Important Information:

Apart from the inoculation steps above, this product does not include cultivation instructions. Customers are responsible for researching the appropriate substrate, incubation conditions, fruiting temperatures, humidity, fresh-air exchange, and other cultivation requirements for Sporeless Oyster mushrooms before purchasing.

Liquid culture appearance naturally varies. Healthy mycelium may appear as cloudy, wispy, stringy, or suspended white growth within the nutrient solution.

For mushroom cultivation and laboratory use only. Not intended for human or animal consumption. Do not inject into humans or animals.

International Shipping Notice:

International customers are responsible for confirming that live mushroom cultures may be imported into their country and for obtaining any required permits or documentation before ordering. Customs clearance cannot be guaranteed. Aggietropicals is not responsible for delays, rejection, return, confiscation, or destruction resulting from customs procedures or local import regulations.

The contamination guarantee does not cover delays, temperature exposure, loss of viability, or other issues resulting from customs processing or import restrictions. Please review our Shipping Policy before placing an international order.