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    Black Pearl Oyster Grow Kit

    $29.99
    $24.95
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    Save 15% when you purchase any 2+ mushroom grow kits.

    Black Pearl Oyster Mushroom Grow Kit – rich umami flavor with a Bold Meaty Character

    Grow gourmet mushrooms at home with the Black Pearl Oyster Mushroom Grow Kit. A hybrid of king and pearl oyster mushrooms, Black Pearl Oysters produce thick stems, dense clusters, and rich umami flavor prized by chefs and home cooks alike.

    This fully colonized, ready-to-fruit grow kit makes indoor mushroom growing simple—just cut, mist, and grow. 

    Great for mushroom grow tents!

    Flavor Profile:
    🍄 Rich, Savory Flavor – Black Pearl Oysters have a deep umami flavor, firm stems, and substantial caps that hold up beautifully to sautéing, roasting, grilling, and stir-frying. Their meaty texture makes them a versatile option for dishes that benefit from a substantial mushroom.

    What's Included:

    • 1 fully colonized Black Pearl Oyster fruiting block (~5 lbs)
    • Spray bottle for daily misting
    • Access to variety-specific online growing instructions.


    Why You’ll Love Black Pearl Oyster
    🖤 Striking Dark Caps — Black Pearl Oysters produce charcoal-to-slate-colored caps that make an impressive addition to the kitchen and growing space.

    🍄 The Best of Two Oyster Styles — This hybrid combines the substantial stems associated with King Oyster mushrooms with the cluster-forming habit of classic oyster varieties.

    🍽 Rich Culinary Texture — Firm stems and meaty caps hold up well to sautéing, roasting, grilling, and high-heat cooking.

    ❄️ Excellent for Cool-Season Growing — Black Pearl performs best in cooler, consistently humid environments, making it a strong choice for fall and winter or a controlled mushroom grow tent.

    🌱 Fully Colonized & Ready for Fruiting Conditions — The block arrives fully colonized, allowing you to focus on temperature, humidity, airflow, and daily care.

    Harvest Potential: Under well-controlled conditions, a healthy 5-pound block may produce approximately 1–2 pounds across one or more flushes. This is an illustrative potential range. Harvest weight, pinning time, mushroom size, and additional flushes vary and are not guaranteed.

    A Step Up for Home Growers: Black Pearl is a good intermediate variety for growers who want to move beyond faster oyster mushrooms and learn how cooler temperatures and environmental control influence mushroom development.

    Species: Black Pearl Oyster (Pleurotus ostreatus hybrid)

    Fruiting Expectations: Black Pearl Oyster generally fruits more slowly and requires cooler conditions than Pink or Grey Oyster. Under suitable conditions, pins may appear in approximately 10–20 days, but home-growing conditions can extend the pinning period to 2–4 weeks.

    Warm temperatures, insufficient humidity, or limited fresh air may delay pinning or affect mushroom development. Black Pearl performs best in a cool, humid growing area or a properly managed mushroom grow tent.

    Fruiting time, harvest size, number of mushrooms, and additional flushes vary and are not guaranteed.

    Temperature Range: 50–62°F

    Difficulty Level: Intermediate
    Fruiting Chamber: Grow Tent, or on the kitchen counter

    Product Details

    What Makes Black Pearl Oyster Mushrooms Special:
    🍄 Rich, Savory Flavor – Deep umami taste with a mild, earthy finish and a firm, meaty texture that holds up well to cooking
    ⚖️ Distinctive Cluster Development — Produces attractive dark-capped clusters with thick stems when provided with suitable cool, humid fruiting conditions.

    ❄️ Cool-Season Performer — Best suited to cooler indoor environments, fall and winter growing, or a temperature-controlled fruiting space.

    Why Home Cooks Love Black Pearl Oyster Mushrooms:
    Black Pearl Oysters are known for their meaty bite and versatility in the kitchen, holding up beautifully to sautéing, roasting, grilling, and stir-frying. Their robust structure makes them an excellent alternative to meat in many dishes, while their dark caps and substantial stems give them a distinctive culinary appearance.

    Why RMS Black Pearl Oyster Blocks Are Different:
    Our blocks are cultivated using premium hardwood substrate specifically selected for Black Pearl Oyster mushrooms.
    This kit arrives fully colonized and ready to fruit, allowing you to start growing immediately with minimal effort. Simply cut, mist, and watch clusters of dark gray to charcoal mushrooms develop in just a few weeks.

    Instructions

    Instructions

    Getting Started:

    Your Black Pearl Oyster Mushroom Grow Kit arrives fully colonized and ready to fruit. Choose an indoor location with indirect light and stable temperatures. Grow tents (ideally) or on the kitchens countertops.

    Ideal Conditions

    • Temperature: 50–62°F
    • Light: Indirect or ambient room light
    • Location: Indoors, away from direct sunlight or heat sources

    Using clean scissors or a sharp knife, cut a small “X” or slit on the front of the bag where indicated. This opening allows fresh air exchange and gives the mushrooms a place to form clusters.

    Daily Care (The RMS Way):

    1. Mist the cut opening 2-3 times daily with spray bottle.
      avoid pooling water inside the bag
    2. Focus misting on the air around the opening, not directly on forming mushrooms
    3. Keep substrate moist but never waterlogged
    4. Ensure good ventilation—mushroom need fresh air to develop properly. Stale air can cause long stems and small caps.
    5. Within 2-5 weeks, small mushroom pins will begin to form at the opening. These pins will rapidly develop into full clusters over the next 1-2 weeks.
    6. Be patient—this variety takes slightly longer than pink or blue oysters but is worth the wait

    Harvesting for Best Results:
    Harvest your Black Pearl Oyster mushrooms when the caps are fully formed but still slightly curled at the edges. Cut or twist entire clusters at the base. The long edible stems are a bonus—don't trim them off!

    Getting Multiple Flushes (RMS Method):
    After your first harvest, continue misting the block lightly once per day and allow it to rest for 7–10 days. Keep the block in the same growing environment.

    Once new pins appear, resume regular misting. If growth slows, increasing fresh air and maintaining steady humidity often helps trigger new clusters.
    Under suitable conditions, the Black Oysters may produce a second flush after an appropriate rest period. Additional flushes, mushroom size, and harvest weight vary according to block condition and the growing environment.

    Specifications
    Resources
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    Black Pearl Oyster Grow Kit

    $29.99
    $24.95