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    King Trumpet Mushroom Grow Kit

    $29.99
    $24.95
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    King Trumpet Ready-to-Fruit Mushroom Grow Kit

    Grow thick, meaty King Trumpet mushrooms at home with a fully colonized ready-to-fruit block from Redwood Mushroom Supply. King Trumpets are prized for their dense stems, firm texture, and mild savory flavor.

    King Trumpets are top-fruiting mushrooms. Keep the sides of the bag intact and fruit from the top of the block. They prefer cool conditions, high humidity, indirect light, and gentle steady fresh air. An optional 12–24 hour cold shock can help if pinning is slow or your growing area is warmer than ideal.

    Need setup instructions? View our King Trumpet Grow Kit Guide for countertop setup, automated grow tent setup, cold-shock guidance, harvest timing, troubleshooting, and second-flush tips.

    Flavor Profile:
    🍄 Mild, Savory Flavor and Meaty Texture — King Trumpets are prized for their thick, substantial stems and firm texture. Their mild, savory flavor and dense structure hold up beautifully to grilling, roasting, pan-searing, slicing, and high-heat cooking.

    What's Included:

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


    Why You’ll Love Growing King Trumpet
    🍄 Dense, Meaty Texture — King Trumpets are prized for their thick, substantial stems and firm texture that holds up beautifully to grilling, roasting, slicing, and pan-searing.

    ❄️ A Cool-Season Specialty — An excellent choice for fall and winter growing or temperature-controlled fruiting environments.

    👑 Distinctive Growing Style — Unlike oyster varieties that form large overlapping clusters, King Trumpets develop as substantial individual mushrooms with thick stems and defined caps.

    🌱 Fully Colonized & Ready for Fruiting Conditions — Skip substrate preparation and incubation. The block arrives fully colonized and ready to begin the variety-specific fruiting process.

    🎯 A Rewarding Intermediate Grow — Ideal for growers ready to work more closely with temperature, humidity, and fresh-air conditions.

    Species: King Trumpet / King Oyster (Pleurotus eryngii)
    Weight: ~5 Pounds
    Fruiting Style: Top-fruiting only; keep side walls intact
    Best Temperature: 50–65°F
    Humidity: 85–90% is ideal in a grow tent
    Fresh Air: Gentle, steady fresh air; avoid direct fan blast
    Expected Timing: Pins often form within 1–2 weeks after fruiting conditions begin; after pinning, mushrooms may take another 10–20 days to mature
    Difficulty: Intermediate beginner

    Product Details

    Grow King Trumpet Mushrooms at Home

    King Trumpet (Pleurotus eryngii) is a cool-growing gourmet mushroom known for thick stems, rounded caps, and a dense texture that holds up well to grilling, roasting, slicing, and pan-searing.

    Unlike standard oyster mushrooms, King Trumpets should fruit from the top of the block rather than through side cuts. Cooler temperatures are important, and warm household conditions can slow or delay pinning.

    Top-Fruiting Setup

    Before opening, gently massage the top surface of the block through the plastic for 10–20 seconds. Countertop growers should keep the bag closed while waiting for pins near the top, then cut the top just below the heat seal and leave several inches of plastic as a humidity collar. Grow-tent users may open the top earlier because humidity is controlled externally.

    Second Flush Potential

    A second flush is possible but less reliable than with standard oyster mushrooms. After harvest, remove leftover stem material, let the block rest for 5–7 days, maintain humidity and gentle fresh air, and cold-shock for 12–24 hours if new pins do not form.

    Instructions

    How to Use Your King Trumpet Grow Kit

    1. Remove the grow kit from the RMS cardboard shipping box. Keep the grow bag closed until you are ready to begin fruiting.
    2. Optional: if your growing area is warm or pinning is slow, keep the bag sealed and refrigerate it at 34–40°F for 12–24 hours. Do not freeze the block.
    3. Before opening, gently massage the top surface through the plastic for 10–20 seconds. Do not break apart or crush the substrate.
    4. For countertop growing, place the unopened block in a cool room with indirect light and wait for small white bumps or pins near the top. Then cut the top of the bag just below the heat seal and leave several inches of plastic as a humidity collar.
    5. For an automated grow tent, after optional cold shock and surface massage, cut the top just below the heat seal and leave a 3–4 inch collar. Do not cut side holes.
    6. Aim for 50–65°F, 85–90% humidity, indirect light, and gentle steady fresh air. Avoid direct fan blast.
    7. Mist lightly only if the exposed top surface looks dry. The surface should be lightly damp, not soaked.
    8. Harvest when stems are thick and fully elongated and the caps are firm and only beginning to flatten.

    A second flush is possible but less reliable than with standard oyster mushrooms. After harvest, let the block rest for 5–7 days and return it to humid, cool fruiting conditions.

    Specifications
    Resources
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    King Trumpet Mushroom Grow Kit

    $29.99
    $24.95