Organic Reishi Mushroom Grow Kit Fruiting Block
|Grow speed||1 to 3 months|
|Shelf life||6 months (refrigerated)|
|Kit dimensions||6in H x 9in W x 6in D|
|Kit weight||5 lbs|
Our reishi (Ganoderma lucidum) fruiting block features a strain that is widely cultivated in Asia. Reishi is an edible medicinal mushroom known as “Ling Zhi” in China and “Reishi" or "Manetake” in Japan. Reishi mushrooms are one of the easiest of all of our fruiting block kits, as they are very reliable producers and require next to no upkeep. That's because they can live their entire life cycle within an unopened bag!
Reishi take their time and grow very slowly. Depending on your needs, you can harvest your kit early when the mushrooms resemble antlers and are only a few inches tall. Or, you can allow the mushrooms several more months in the bag to form more interesting growth patterns. You can also try for mature mushroom caps, which requires more supervision as well as opening the bag (which is described in the directions section below). This is a more challenging method, but can be very rewarding for those who have some prior experience with reishi kits.
Upon receiving your kit:
Remove kit from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive until you are ready to grow your fruiting block!
Scroll down for guides on growing, storage, cooking, and more.
For the majority of mushroom species, all that is needed to initiate fruiting (or begin the growth cycle) is a change in environmental conditions -- specifically humidity, light, temperature, and changes to oxygen and CO2 levels.
For best results:
If you are interested in growing reishi antlers, a fruiting chamber is not necessary. However, if you are interested in growing reishi conks (caps) we recommend growing your reishi block in a fruiting chamber (like a monotub or martha tent) as a controlled environment will decrease the risk of contamination and increase the chances of success.
Creating optimal conditions:
For reishi antlers, there are no special parameters (as the entire growth cycle happens within the bag.) The environmental parameters for reishi conks (caps) can be found on this page under "Temp, Humidity & CO2 guide" and on page 8 of our fruiting block instruction booklet.
Preparing your block:
Unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed.
How to initiate fruiting:
For reishi antlers:
- DO NOT open the bag. Reishi needs the high humidity and CO2 environment of a closed bag in order to form antlers.
- Place closed bag in a spot with ambient light and rotate occasionally until ready to harvest.
For reishi conks (caps):
- DO NOT open the bag until antlers are greater than 4” in height.
- Once antlers are greater than 4" in height, open the top of the bag.
- Return to fruiting chamber until ready to harvest.
- Reishi mushrooms are very slow growing.
- Because of the slow growth rate, there is greater risk of contamination when opened and placed in a fruiting chamber.
Harvesting your mushrooms:
Mushrooms can be harvested by twisting the base and then trimming away any substrate and dried in the open air.
Growing different blocks together:
With some compromise, many different species of mushrooms can be grown together in a fruiting chamber. First, consider the temperature range of the mushrooms you desire to grow, and second, the CO2 sensitivity. Humidity ranges overlap for the majority of species. We encourage you to experiment with many different groupings!
Having issues with unusual growth, stunted growth, or no growth at all? Refer to pages 16-18 of our fruiting block instruction booklet.
Temperature 65-80°F | 18-26°C Humidity (Phase 1: Primordia) 95-100% Humidity (Phase 2: Fruitbody) 85-95% CO2 Sensitivity (Phase 1: Primordia) High CO2, keep in bag CO2 Sensitivity (Phase 2: Fruitbody) <2,000 ppm | keep bag closed for antlers, open bag for caps
- Primordia - The earliest recognizable stage of fruitbody development. Also known as “baby mushrooms” or “mushroom pins.”
- Fruitbody - A fully grown mushroom, the reproductive structure of the organism in which the spores are produced.
- CO2 sensitivity - When CO2 levels are too high, yields will decrease, stems will become long and stringy, caps will be small, and/or growth will halt.
If you don't plan to use your reishi kit immediately, store in the refrigerator for up to 6 months. If left at room temperature, it will continue to grow.
Reishi mushrooms are intensely bitter and woody and usually aren't considered culinary unless harvested very young. However, we do recommend throwing a slice or two of dried reishi into soup stock, much like you'd use a bay leaf, to infuse the broth with its medicinal properties. You may also choose to incorporate reishi into medicinal teas tinctures.
If you’re going to consume home-grown mushrooms, make sure to cook your fresh mushrooms thoroughly with heat. If it is your first time eating this species, it is best to start with a small amount to check for allergies, even if cooked.
Mushrooms grow spores as they develop. This is a natural means of reproduction. This is when people with allergies or compromised immune systems may want to consider putting fruiting mushroom kits outdoors or in a well-ventilated area. Spores in mushrooms sometimes cause respiratory irritation. In rare cases, spores may also cause irritation for some non-allergic or non-immunocompromised mushroom growers. If you are one of them, it is recommended to reduce the overall spore load by harvesting mushrooms while they are still in their younger growth stages.
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First fruiting block
Have never grown mushrooms before and it has been a great experience so far! Totally worth it!!
Thanks, Collin! We're so happy you're enjoying the experience. Our team is here if you need anything!
Impressive yield, quote pleased.
Thanks for sharing, Michael! We're so happy you had a great experience. The team is here to help if you ever need anything.
So far pretty good there doing great make sure you read your instructions
Thanks for sharing, Shawn! Our team is here to help if you ever need anything.
Fantastic Mushroom Block
At first I had a weird block just sitting in my house and wondered if I had made the right decision by wanting to grow mushrooms and buying this. Now I'm like, WOW THIS IS A MIRACLE! You do nothing and it sneakily grows slowly in its bag. 10/10 I'm super excited to use my reishi in stuff I make later this fall/winter. If you're uncertain, go ahead and make this investment for yourself.
We're so glad you're enjoying the experience, Scarlett! Our team is here to help if you ever need anything.
So fricken awesome! North Spore introduced me to a new hobby, and it’s a hobby that’s sticking around! Finally! I’m obsessed with all the varieties of fruiting blocks I’ve tried from this company! The Reishi is just magical to watch grow, I can’t wait to make my tincture! Get the chamber. Worth it! PS. The customer service is better than Amazon customer service, and they’re good!