Organic Golden Enoki Mushroom Grow Kit Fruiting Block

1-Pack
$29.99

Our Certified Organic mushroom fruiting blocks make growing your own mushrooms easy. Designed by mycologists and colonized to the perfect level, all you have to do is create the right environment and fruit your mushrooms.

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Trusted by 350K+ Growers

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USDA Certified Organic

USDA Certified Organic

The North Spore Golden Enoki (Flammulina velutipes) fruiting block features a cultivated strain of Flammulina velutipes prized for its delicate appearance and crisp, savory texture. This strain produces elegant clusters of slender, golden-yellow mushrooms with long, threadlike stems and petite convex caps. When cooked, Golden Enoki mushrooms develop a mild, slightly fruity flavor with subtle umami notes, making them a versatile addition to soups, stir-fries, noodles, and more.

Receiving and Storage

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!

Fruiting blocks should be used within 1 week of receipt. If you don't plan to use immediately, you can refrigerate your block for up to 6 months.

Growing Instructions

CLICK HERE for a full tutorial.

For most mushroom species, including Golden Enoki (Flammulina filiformis), fruiting is triggered by a shift in environmental conditions—specifically increased humidity, access to fresh air (lower CO₂), light, and cooler temperatures.

For best results:

We strongly recommend growing your Golden Enoki block in a controlled fruiting environment, such as a monotub or Martha tent. These setups help maintain the cool temperatures and high humidity that Golden Enoki needs to fruit successfully and reduce the risk of contamination.

Creating optimal conditions:

The environmental parameters for Golden Enoki mushrooms can be found on this page under “Temp, Humidity & CO₂ guide” and on page 5 of our fruiting block instruction booklet.

Preparing Your Block:

  1. Remove the block from the shipping box.
  2. Unfold and tightly fold back any excess plastic.
  3. Place the block with the filter patch facing upward.

How to Initiate Fruiting:

  • Slice the plastic bag with either a single diagonal cut or an “X” on the top or side—Golden Enoki can be fruited from either surface.
  • Mist regularly and maintain high humidity (ideally above 85%) with plenty of fresh air exchange.

Special Considerations for Golden Enoki:

  • Golden Enoki requires cooler temperatures to fruit properly—ideally between 50–65°F.
  • Lower light levels will produce longer, more traditional enoki-style stems. Increased light may result in thicker stems and pigmented caps.
  • Stems are long and delicate—handle with care to avoid breakage.
  • Golden Enoki may take 2–3 weeks from initiation to harvest.

Harvesting Your Mushrooms:

Harvest just before the caps begin to expand or flatten. Remove the entire cluster gently to avoid breaking the fragile stems. Note that Golden Enoki has a short shelf life, so consume or preserve shortly after harvesting.

Growing Multiple Blocks Together:

Golden Enoki can be grown alongside other species in a fruiting chamber if you can meet its environmental needs. Prioritize strains with similar cool temperature and low CO₂ tolerance. Humidity requirements generally overlap across species. Don’t be afraid to experiment!

Troubleshooting:

Experiencing stalled growth, abnormal formations, or no pins at all? See pages 16–18 of our fruiting block instruction booklet for guidance and solutions.

Temp, Humidity, & C02 Guide

Temperature 45-65°F  |  7-18°C
Humidity (Phase 1: Primordia)98-100%
Humidity (Phase 2: Fruitbody)88-95%
CO2 Sensitivity (Phase 1: Primordia)500-1,000 ppm
CO2 Sensitivity (Phase 2: Fruitbody)<1,000 ppm

  • 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.

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Frequently Asked Questions

Fruiting block kits are mushroom grow kits, but tend to be larger (5 lbs) and some require a bit more care depending on species. Instead of boxes, they are bagged. We recommend growing them in a fruiting chamber such as a monotub or martha tent set up like our BoomRoom. A controlled environment will produce the best results for the fruiting blocks. And, since these kits are slightly larger, they can produce more mushrooms than our Spray & Grow Kits.

Oyster mushrooms and lion's mane mushroom fruiting block kits are great for beginners because they are reliable producers and require the least amount of effort. Reishi is also great because the mushroom grows in the unopened bag (no special care or fruiting chamber required!)

All kits should grow a minimum of one flush of mushrooms, but with a little patience and skill you can often get a second or third flush depending on the species! After you’ve harvested your first flush of mushrooms, remove any growth from the block and follow these instructions:

⮕ If you have a martha tent or an automated fruiting chamber, leave the humidity and fan running and wait about 2 weeks for new pins to begin forming.

⮕ If you are using a monotub or non-autmated fruiting chamber, open 2x daily and spray blocks generously with water. Try not to expose the blocks for too long to decrease chances of contamination.

⮕ If you don't have a monotub, martha tent, or fruiting chamber cover the block with a humidity tent made from a large plastic grocery bag with LOTS of small, quarter-sized holes. Remove the humidity tent 2x daily and spray blocks generously with water.

Be patient: It's totally normal for it to take longer for mushrooms to appear with each subsequent fruiting. However, if there's no progress after two weeks, it’s a good idea to soak your block.

Soaking your block: Take your block out of the bag and soak in a bowl of cool water. Most species only need to soak for 20 minutes. However, only soak your lion's mane block for 5-10 minutes as these blocks tend to break apart if soaked for too long. After soaking, let the block drain by leaving it cut side down for another 10 minutes or tip it around to let extra water run off. You don't want to leave standing water in your bag, so pat your block dry with a towel before placing it back in the bag.

Note: Shiitake blocks should not be placed back in the bag.

For most species, you should leave the block in the bag for the entire duration of the growing cycle. However, there are some exceptions.

⮕ Shiitake should be removed from the bag before going into the fruiting chamber.

⮕ Nameko should have most of the top of the bag cut off (leaving about 4" of plastic above the block) before going into the fruiting chamber.

Our fruiting block kits are made fromsawdust blocks that have been ammended with substrate supplements.

Cluster of brown-capped mushrooms with long, light-colored stems against a white background.

Backed by Our 100% Grow Guarantee

Every kit comes with our 100% Guarantee: You’ll get your first flush of mushrooms, or we’ll make it right. With over 350,000 happy growers, North Spore is trusted by hobbyists, chefs, and mycologists alike.

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