Any ideas on what to do with the mushroom grow waste? (fungi forum at permies) (2024)

posted 5 years ago

  • Any ideas on what to do with the mushroom grow waste? (fungi forum at permies) (1)
  • Any ideas on what to do with the mushroom grow waste? (fungi forum at permies) (2)

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  • Any ideas on what to do with the mushroom grow waste? (fungi forum at permies) (3)
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I'm going to share a recent discovery I made...

This year I've been experimenting with incorporating mycelium into sheet mulch. The ground is frozen for about 6 months of the year, and I've noticed things decay slowly, compost takes forever to finish off etc.

I've been adding organic matter to my soil, so I'm looking to sheet mulch not only to suppress unwanted vegetation, but also as a means of composting in place. I got some spent grow logs and I've been building sheet mulch using different combinations of newspaper, hay, straw, used coffee grounds, and the grow logs sliced into discs.

I'm using between 5 and 15 gallons of used coffee grounds per log by the way.

I noticed an explosion in the slug population which is par for the course in sheet mulching. But they don't eat my plants. It appears their preferred food is the wet newspaper. I've been observing these slugs on a regular basis. They tend to leave the mycelium alone, and they avoid the used coffee grounds.

In the beds where the mycelium is covered by a thin layer of newspaper I discovered a neat dynamic. The slugs graze on the newspaper but not in a random fashion. They tend to eat the newspaper in spots until they eat right through, and then they move on to a fresh area. So I'm seeing fissures appear in the newspaper. These fissures in turn are allowing oxygen into the sub layer of mycelium and used coffee grounds, and the mycelium react by fruiting up through these holes.

Rather than having an explosion of mushrooms in my garden beds everywhere and all at once like I was expecting, I'm getting a controlled production thanks to my little workers.

Any ideas on what to do with the mushroom grow waste? (fungi forum at permies) (2024)

FAQs

What can you do with mushroom waste? ›

6 Uses of the spent mushroom substrate
  1. Bioremediation. Bioremediation represents the use of living organisms such as bacteria and fungi in the removal and neutralization of different air, soil, water contaminants. ...
  2. Crop Production. ...
  3. Biogas for heating or cooking. ...
  4. Plant hormone. ...
  5. Food for animals.
Jul 29, 2019

What to do with spent mushroom logs? ›

Spent mushroom substrate is excellent to spread on top of newly seeded lawns. The material provides cover against birds eating the seeds and will hold the water in the soil while the seeds germinate.

Can you reuse mushroom growing substrate? ›

Yes, you can most definitely reuse mushroom grow kits! Mushroom grow kits are generally designed to give you more than one harvest depending on the species of mushroom inside your growing kit. There is enough water nutrition available in the substrate to give you multiple harvests over a period of 2-10 weeks.

What can I do with leftover mushroom plugs? ›

What to do with Leftover Mushroom Spawn?
  1. 1) Use it! Inoculate heavy. ...
  2. 2) Use it! Get more logs, straw, or materials to plant. ...
  3. 3) Save it for later. ...
  4. 4) Use it! ...
  5. 5) Give it away! ...
  6. 6) Compost it.

Can you use spent mushroom substrate as mulch? ›

Use spent mushroom substrate (SMS) as mulch to suppress weeds + retain moisture or as soil amendment to add organic matter + structure. Cellar Mushrooms SMS is free from pesticides, fungicides, chemicals. This block was the food source for our culinary mushrooms grown in Vancouver, WA.

Is bagged mushroom compost good? ›

Mushroom compost should be used with caution due to its high soluble salt levels and alkalinity. These salt levels can kill germinating seeds, harm young seedlings, and cause damage to salt-sensitive plants, like azaleas and rhododendrons. To temper the alkaline levels of mushroom compost, consider using aglime.

Should I shake my mushroom grow bag? ›

If the culture doesn't look uniform you may shake it for a few seconds to disperse the mycelium or spores.

What can I do with leftover mushroom water? ›

Save the Cooking Liquid to Make a Savory Condiment. Add leftover "mushroom juice" to pan sauces, broth-based soups, or even stew for a dose of meaty flavor.

Are mushroom logs worth it? ›

Growing mushrooms on logs is one of the most sustainable ways to grow mushrooms, both for your wallet and the environment.

How to make spent mushroom compost? ›

Champost or "spent mushroom compost" is a by-product of mushroom cultivation. It is a mixture of mushroom substrate and casing soil. The mushroom substrate consists of horse manure, straw, chicken manure, gypsum and water. The casing soil is composed of peat and lime and lies on top of the substrate.

Should I seal the ends of mushroom logs? ›

After plugging your logs, sealing the holes and ends of the logs with food-grade wax is recommended to ensure a higher success rate.

How do I get the most out of my mushroom grow kit? ›

Give your block some fresh air

Leaving the plastic on your kit helps to keep moisture in, preventing the block from drying out. Feel free to spray it periodically when it's looking parched as you would inside. After a couple of weeks, you should expect mushrooms after heavy rainfall or after a big temperature shift.

Can you use too much mushroom compost? ›

Mushroom compost can supply nutrients and increase water-holding capacity of the soil. But mushroom compost can also be too much of a good thing for seeds, seedlings and young plants.

How do you dispose of spent mushroom substrate? ›

When the substrate is removed from the cultivation room, it may not be used immediately but we may compost or weather/leach for further improvement of the physical and chemical characteristics of the material. Mushrooms are cultivated on various agrowastes and hence its residue is suitable for agricultural crops.

Why do you have to be careful when using mushroom compost? ›

Mushroom compost should be used with caution due to its high soluble salt levels and alkalinity.

How do you use mushroom scraps? ›

Another easy way to use up mushroom pieces, scraps, slightly wilted mushrooms or mushrooms stems is with soup. Chop pieces and tender stems to add along with other vegetables for chunkier soups: use scraps, wilted mushrooms and tougher stems to make creamy soup.

Is mushroom compost worth it? ›

Mushroom compost has many benefits for your plants and overall soil health. It's a great ammendment to your garden and adds many beneficial nutritents. Use with caution, however, as it can be harmful to some plants. All-in-all, mushroom compost is excellent for your garden when mixed throughly with your garden soil.

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