King Trumpets prefer cooler conditions than Pink Oyster mushrooms. If your room is warm, pinning may be slower or uneven. Keep the grow bag closed until you are ready to start fruiting.

1. Cold Shock (Recommended): To trigger stronger, more uniform pinning (especially if your growing area is warm), place the unopened bag in a refrigerator at 34–40°F for 12–24 hours. Then return it to your fruiting area.
   Do not freeze the block. Cold shock is optional, but it can be helpful when pins are slow to appear.
2. Loosen the Surface: Before opening the bag, gently massage the top surface of the block through the plastic for 10–20 seconds to loosen the mycelium and encourage even pin formation.
   The goal is to lightly loosen the surface where mushrooms will form. Do not break apart the block, shake the bag, or crush the substrate.

King Trumpets should fruit from the top of the block. Monitor for small pins pressing against the plastic at the top of the bag.

A. Growing in an Automated Mushroom Tent

Place the unopen block in the directly in the tent and wait until you see small white bumps, knobs, or young mushrooms pressing against the plastic near the top of the block. These are pins. Keeping the bag closed during this early stage helps the block hold humidity.

B. Growing on the Countertop:

Place the unopened block in a cool room (best temperature between 50-65°F) with indirect light and wait to see pinning. Once pins are visible near the top:

• Wash your hands or wear clean gloves.
• Use clean scissors or a clean knife.
• Cut the top of the bag just below the heat seal.
• Leave several inches of plastic above the substrate to form a humidity collar.

Do not cut holes in the sides of the bag. King Trumpets should fruit from the top.

Expected timing: Pins often form within 1-2 weeks after fruiting conditions begin.

A. Growing in an Automated Tent

Aim for:

Temperature: 50–65°F
Humidity: 85–90%
Fresh air: Gentle, steady air exchange
Light: Indirect room light or low grow light

If your tent is holding humidity well, misting may not be necessary. Mist lightly only if the top surface looks dry. Too much water can damage young pins or create wet spots.

B. Growing on the Countertop: Create Adjust your Humidity

• If your room is dry, loosely place a clean plastic bag over the grow kit as a DIY humidity tent. The bag should not press tightly against the mushrooms.
• Fill the included sprayer with filtered or distilled water and lightly mist the inside walls of the humidity tent bag 2-3 times daily, or more often in dry conditions. Use a fine mist (damp, not soaked). Leave the bottom loose or cut several small holes for fresh air.
• Mist the exposed top surface lightly only if it looks dry. Use a fine mist. The surface should look lightly damp, not soaked. Avoid letting water pool on the block.

As mushrooms grow taller, gradually roll the grow bag down. Keep about 4–5 inches of plastic above the substrate when possible.

This helps hold humidity close to the mushrooms while still allowing fresh air.

King Trumpets are ready when:

• Stems are thick, smooth, and fully elongated
• Caps are firm and just beginning to flatten

Gently twist at the base, or cut cleanly with a knife where the stem meets the block.