Princess of Pearl Oyster | Pleurotus ostreatus | Mushroom Grow Kit- Spray and Grow – 3kg

$30.00 inc. GST

15 in stock

Description

 

Scientific Name: Pleurotus ostreatus (Princess/Princess Pearl strain)
Skill Level: Easy
Growing Time: Colonisation ~2 weeks; fruiting 7–10 days
Shelf Life: Best used fresh; colonised bag can be refrigerated up to 1 month
Ideal Fruiting Temp: 12 °C – 29 °C
Yield: High — multiple flushes
Side Fruiting
Brand-Your kits made with Unicorn grow bags, USA
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.

About this 3kg Kit

Complete Kit: Everything you need is included, just spray water and follow the simple instructions.

This kit uses a special Master’s Mix, a blend of sawdust, soy pellets, and water. It’s inoculated with about 300 grams of  rye or millet grain spawn to give your mushrooms the best start.

We keep things simple and affordable by sending you a fresh, made-to-order bag, just like real mushroom farms use. No fancy boxes, no sitting in cold storage for weeks. This helps keep your cost down by $10; we pass that saving directly to you. We call these kits ‘almost ready to fruit’.

The Princess of Pearl – Pleurotus ostreatus(a.k.a. Princess Pearl)  is a vigorous, high-yielding commercial strain of pearl oyster. It produces dense, creamy-white clusters with a mild, buttery flavor and tender bite—ideal for sautés, pastas, and soups. It colonizes quickly and fruits well on straw or hardwood sawdust/Master’s Mix, making it beginner-friendly yet productive enough for small commercial setups.

Humidity: Maintain ~85–90% RH; mist 2–3× daily to keep the cut surface moist.
Light: Indirect light helps cap development; avoid direct sun.
Air: Ensure gentle fresh-air exchange to prevent long stems/small caps.

 

Princess of Pearl Oyster Grow Kit – Dense, Buttery Clusters

The Princess strain is selected for fast colonisation and resilient fruiting across a broad band of cool-to-moderate temperatures. Expect compact, neatly layered caps and thick stems that cook to a savory, buttery finish. For substrates, this strain performs on pasteurised straw or supplemented hardwood (Master’s Mix). Colonisation Temperature around 21–24 °C, Fruiting between 12–29 °C.

Step-by-step Instructions & Post-Harvest Care

IMPORTANT— Keep humidity steady and ensure gentle airflow; Princess will reward you with dense canopies and repeat flushes.

Step 1 – Let It Grow

*Take the bag out of its packaging.
*Stand it upright letting the mycelium breath from the white filter and do not cut it yet.

*Please keep it away from direct sunlight, windows, fans, AC, or a wardrobe.

Note: Full colonisation for Princess of pearl oyster blocks can take about 2 weeks depending on  temperature ,wait until the block is solid white before inducing fruiting.

Need to Wait?
If you’re not ready to start fruiting after full colonisation, you can store the bag in the fridge for up to a month . Do not store it in the fridge until the bag is fully colonised(white).

Step 2 – Fruiting & Harvest

After full colonisation,It’s time to move on to the fun part—fruiting!

1. Cut: To prepare your side-fruiting mushroom growing kit, start by cutting a 10–12 cm “X” into the plastic on the side of the block, where the substrate touches the bag. This is where the mushrooms will fruit from. After making the cut, gently press out any trapped air inside the bag. Then, take the loose, empty upper portion of the bag (since the block only fills the lower half) and fold or roll it neatly over the top of the block. Secure it in place with tape so it doesn’t hang down or cover the fruiting area. This keeps the cut area exposed to fresh air, encouraging healthy mushroom growth from the side of the block.

2. Mist: Lightly mist the cut area 2–3 times daily and keep humidity high.Stop misting when the baby mushrooms tarts to come out. Constant misting is better than heavy misting.

3.Harvest: Mushrooms typically appear in 7–10 days. Harvest when caps are starting to curl upwards, exposing their gills., twisting gently at the base.

Flushes: Expect 2–3 flushes. After each harvest, remove all remaining fruit bodies, allow the block to rest for 3–4 days, then soak it in cold water for 2–3 hours before resuming misting to promote new growth

Common Mistakes to Avoid

Low Humidity: Leads to aborted pins and cracked caps — keep the cut surface moist.
High CO₂: Causes long stems and tiny caps — increase gentle airflow.
Direct Sun/Heat: Dries the block and deforms caps — use indirect light.
Under-supplemented Substrate: Reduces yield — Princess performs best on straw or supplemented hardwood mixes.

What to do if pins form inside the bag

Don’t worry. Just ignore the internal pins. Gently fold the top of the bag to push out excess air, cut a small “X” in the side of the bag (where you want the mushrooms to grow), and begin misting that spot daily. Mushrooms will start fruiting from that cut. The internal pins will eventually be aborted naturally, as they don’t have space to grow.

Checkout out our fine Misting Spray Bottle to produce tiny droplets and keep humidity high. The size of droplets formed can easily be evaporated , this constant evaporation signals mycelium to pin.

Want to Learn More?

This kit introduces you to Stage 3: Fruiting, the final step in mushroom growing.
To explore all three stages (including how mushrooms grow from spores to harvest), check out our
Educational Mushroom Growing Kit
.

Checkout all the Mushroom Growing kits Available in Our Spray and grow 3 Kg range.

Could not fruit the bag, or was it contaminated? Send us a photo or call us, and we will help you resolve the issue.

Checkout all our Spray and grow kit 3 Kg kits.

Additional information

Weight 3.1 kg
Dimensions 21 × 30 × 15 cm
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