Tan Oyster | Pleurotus ostreatus | Mushroom Grow Kit- Spray and Grow - 3kg

Tan Oyster Mushroom Grow Kit
Scientific Name: Pleurotus ostreatus

Skill Level: Easy–Intermediate.

Growing Time: Spawn-run/colonisation typically 1–3 weeks for well-prepared sawdust blocks at warm incubation; primordia and harvestable mushrooms commonly appear 3–14 days after induction (timing varies by substrate, spawn rate & temperature).

Shelf Life: Use fresh for best texture; refrigerate 3–7 days or dry/freeze for long storage.

Ideal Fruiting Temp: 15°C – 24°C

Yield: 1KG

Fruiting Orientation: Side
Flushes : 2-3

Unicorn is the only bag in the world that has been tested by Eurofins, a third party lab in Europe and passed the stringent EN 1186, and USFDA 1520 for plastic migration into the substrate (Microplastic). Unicorn PP bags was tested at the highest levels of 121 C for 3.5 hours.  No PE bags or other manufacturers’ PP bags have achieved this important food safety criteria.
Lead time (mentioned in the listing above “add to cart” button) means time it takes to prepare this order. Product in stock does not mean its ready to send out, it means it can be prepared in the lead time mentioned.

About Tan Oyster (Pleurotus ostreatus)

Tan Oyster is a commercially popular Pleurotus ostreatus variant with warm-tan caps and productive, clustered fruiting. Like other oyster strains, it performs well on a variety of lignocellulosic substrates — pasteurised straw, hardwood sawdust (supplemented or unsupplemented), and many agri-residues work well. Substrate choice and supplementation strongly influence speed and yield.
Tan Oysters are often chosen for their attractive colour and ability to fruit reliably in the 15–24°C window, making them a solid option for growers in mild-to-warm environments or controlled indoor rooms.

Growing Conditions
Humidity: Keep high humidity during pinset and fruiting (≈85–95% RH) for strong, plump caps.
Light: Indirect ambient light (normal day/night cycle) is sufficient — avoid direct sun.
Air: Provide regular fresh-air exchange once pins form to avoid CO₂ buildup and elongated stems — gentle airflow is best.
Storage: Unopened kits keep a few weeks in a cool (2-4C) , dark place; yields may drop the longer they sit.

Common Mistakes to avoid

Humidity swings: Sudden drying or heavy condensation pooling harms pins — keep RH steady.
Poor fresh-air exchange: Inadequate FAE leads to long stems and small caps; too strong drafts dry the surface. Balance airflow after pins form. Oysters need higher airflow.
Incorrect substrate or over/under-supplementation: Substrate choice strongly affects speed and yield — balance supplementation and maintain good hygiene.

⚠️ Spore Warning — Please Read Before Purchasing
All mushrooms produce spores as part of their natural growth cycle. Some people may be sensitive or allergic to spores, so be mindful of where you grow them. Harvesting earlier — as the caps begin to flatten — will help you avoid heavy sporulation.

Instructions
Download your full step-by-step growing instructions from the link above. We recommend saving these before your kit arrives so you are ready to go.