How to Grow & Harvest Reishi

Reishi mushrooms (aka the "mushroom of immortality") are known for their striking forms and long history of use in wellness traditions. These fungi are not typically used in culinary recipes, though they can be simmered in broths and then removed before consumption for added immunity benefits. In nature, they grow as shelf-like brackets on hardwood trees, but when cultivated in grow bags, they take on a unique antler-like shape. 

Read below on how to grow, harvest, and use reishi mushrooms from a grow bag, whether it’s from one of our limited-edition kits or another source.

1. Prepare the Bag

Inspect the grow bag to ensure it is intact, free from holes or tears, and properly sealed. The built-in filter patch allows for airflow while maintaining a clean environment inside. 

2. Choose the Right Location

Place the grow bag near a window that receives indirect sunlight. Reishi mushrooms thrive in diffused light, as direct sunlight can be too intense and may dry out the bag. An ideal spot would be a windowsill or a shelf near a window, allowing natural light to filter in throughout the day.

3. Watch for Growth

Over the next several weeks, you should see "antlers" (the fruiting bodies of reishi) start to develop. They will first appear as small white bumps on the surface of the grow block. Be patient, as reishi mushrooms grow slowly compared to other mushroom varieties. (2-3 months before harvest)

4. Harvesting

Once the white part on the tip of the antler has reduced to less than a half inch and the antlers are near the top of the bag, your reishi is ready to harvest! Cut the plastic off the bag and carefully use a knife or scissors to trim the reishi antlers away from the block.

5. Drying Reishi Antlers

After harvesting, it is essential to dry the reishi antlers properly to preserve them for long-term use. Here’s how to do it:

  1. Air Drying: Place the slices on a clean drying rack or tray in a well-ventilated area with good airflow. Avoid direct sunlight, as it may degrade some of the beneficial compounds in the reishi.
  2. Dehydrator Method: For faster drying, use a food dehydrator. Set the temperature to around 95°F to 115°F (35°C to 46°C) and allow the antlers to dry for 12-24 hours or until they become brittle. Properly dried reishi antlers should be hard and snap cleanly when broken. If they bend or feel rubbery, continue drying.
  3. Storage: Store dried reishi antlers in an airtight container in a cool, dry, and dark place. This will protect them from moisture, light, and air, which can degrade their potency over time.

6. Use

Reishi mushrooms are typically dried and used to make teas, tinctures, or powders. 

Reishi Tea Decoction: Add 25 oz of reishi to 8 cups of water. Boil for 30-90 mins. Add ginger or honey near the end if desired. 


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