How Do You Regrow Mushrooms From Scraps? This method is a lot less complicated and doesn’t require as many materials. All you need are some mushroom scraps, a little soil, and water. Here’s a step-by-step guide on how you can regrow mushrooms from scraps:

Many of us love the idea of growing mushrooms at home to save money and get fresh mushrooms whenever we want them. However, the process of growing mushrooms can be daunting, especially if you don’t have a lot of experience with it. Most people know that growing mushrooms requires special care and a sterile environment, which can be challenging for beginners to provide. If you’re someone who doesn’t want to invest in a mushroom growing kit just yet, there’s another method you can try first: growing mushrooms from scraps.

How Do You Regrow Mushrooms From Scraps

How Do Mushrooms Grow?

Mushrooms are fungi, and they reproduce by releasing spores, as do all fungi. These spores are tiny cells that carry the mushroom’s genetic material. When spores land on an appropriate surface, they germinate and begin to grow. The spores need three things to germinate and grow into mushrooms: moisture, food, and warmth.

Moisture: Mushrooms are about 90% water, so they need a lot of moisture to grow. The spores will only germinate and start growing if the environment is moist enough.

Food: Once the spores have germinated, they need a food source to continue growing. Mushrooms get their nutrition from organic matter, such as dead leaves and wood.

Warmth: Most mushrooms prefer a temperature between 68-86 degrees Fahrenheit (20-30 degrees Celsius).

When the conditions are right, these spores germinate and become cottony white threads called hyphae. The hyphae grow and branch out, forming a network called mycelium. The mycelium continues to grow and spread through the food source, breaking it down as it goes. As the mycelium grows, it produces mushrooms. The mushrooms mature and release their own spores, which start the cycle all over again.

Ways You Can Grow Mushrooms

Now that you know a little about how mushrooms grow let’s look at some ways you can grow them.

Mushroom Growing Kit

The most common way of growing mushrooms is by using a mushroom growing kit. These kits contain everything you need to get started, including a pre-sterilized substrate and a spawn bag. The substrate is the material the mushroom mycelium will grow on. You can make it from various materials, such as straw, sawdust, or coffee grounds. The substrate is mixed with the spawn and placed in the growing kit. The kit provides the ideal conditions for the mycelium to grow and produce mushrooms.

Mushroom Logs

Another way to grow mushrooms is on logs. This method is often used to grow shiitake mushrooms. The log is inoculated with the mushroom mycelium, which then starts to grow and produce mushrooms. This method can take as long as a year to produce mushrooms, but it doesn’t require as much maintenance as a mushroom growing kit.

Straw Bales

You can also grow mushrooms on straw bales. This method is similar to growing them on logs, except the straw is used instead of a log. The straw bales are inoculated with the mushroom mycelium, which then starts to grow and produce mushrooms. This method can take a shorter amount of time to produce mushrooms than the log method, but it requires more maintenance.

Monotub Method

A monotub is a plastic container that’s used to grow mushrooms. It’s a simple and easy way to get started with mushroom growing. To create a monotub, you’ll need a plastic container, some perforated plastic sheets, and a few other materials. The substrate is placed in the container, and then perforated plastic sheets are used to create holes for the mushrooms to grow through.

The monotub provides the ideal conditions for the mycelium to grow and produce mushrooms. This method is easy to set up and doesn’t require much maintenance.

Scrap Method

The scrap method is a more simple way to grow mushrooms. It doesn’t require a lot of materials or equipment, and it’s a great way to recycle your store-bought mushrooms.

How Do You Regrow Mushrooms From Scraps

Can You Grow Mushrooms From Mushroom Scraps?

Yes. As we mentioned above, it is a simple and easy way to grow mushrooms. All you need is a container, some substrate, and your mushroom scraps. The scrap method is a great way to grow mushrooms if you don’t want to spend a lot of money on a mushroom growing kit. Plus, it’s a great way to recycle your store-bought mushrooms.

The only downside is that the success rate is lower than other methods. However, it’s still a fun and easy way to grow mushrooms. Regrowing mushrooms from scraps can be a hit or a miss as your mushrooms can get contaminated by other fungi or bacteria. But, if you’re up for the challenge, it’s a fun experiment to try.

How Do You Regrow Mushrooms From Scraps?

As now you know that you can regrow your store-bought mushrooms at home, you might be interested in learning how to do it. Here’s a detailed guide on how to regrow mushrooms from scraps:

Difficulty: Difficult

Growing mushrooms from scraps aren’t easy as growing onions, Carrots, and other vegetable scraps. The main challenge when regrowing mushrooms is preventing contamination. For this, you will need to use sterilized materials and create a clean environment. First, you need to sterilize your materials. This includes your knife, cutting board, and any other materials that will come into contact with the mushrooms. You can sterilize your materials by boiling them in water for 10 minutes.

Next, you must keep the growing area clean. This means avoiding touching the growing mushrooms with your hands, as this can transfer bacteria. It’s also important to keep the temperature and humidity in the growing area consistent. The ideal temperature for most mushrooms is 70-80 degrees Fahrenheit.

Once your materials and growing area are ready, it’s time to start growing your mushrooms.

What You Need

To regrow mushrooms from scraps, you will need a few things.

Store-Bought Mushroom

If you can forage mushrooms in the wild, that’s great. However, for this guide, we will be using store-bought mushrooms. The type of mushroom you use is up to you. The most common mushrooms that are grown from scraps are oyster mushrooms, shiitake mushrooms, and enoki mushrooms. You will need a big, fat mushroom for this project. Avoid using slim mushrooms, as they will be more difficult to regrow. Most importantly, the mushroom you choose should still have a part of the base attached. This is essential for growing the mushroom, as the base is where the mycelium is located.

Knife and Cutting Board

You’ll need a sharp knife and a clean cutting board to slice the mushroom. Avoid using a dull knife, as this can crush the mushrooms and make them more difficult to regrow.


The substrate is what the mushrooms will grow in. Wood chips, straw, and coffee grounds are the most common substrates used for mushroom cultivation. You can use any type of substrate, as long as it’s sterile and organic. You can sterilize the substrate by boiling it in water for 10-20 minutes.


The container can be anything that can hold the substrate and mushroom. A plastic container, mason jar, or even a Ziploc bag will work. Just make sure the container has holes drilled in the bottom so the mushrooms can breathe.


Step 1: Slice the Mushroom

The first step is to slice the mushroom. Cut the mushroom in half, so you have the stem and the cap. The stem is what we will be using to grow the mushrooms. You can use the cap for preparing food as we don’t need it for this project.

If the mushroom you’re using doesn’t have a stem with the base, you can not use it for this project.

Step 2: Add the Substrate to the Container

Next, add the substrate to the container. If you’re using a mason jar, you can add 1-2 inches of substrate. If you’re using a plastic container or Ziploc bag, you can add 3-4 inches of substrate.

Step 3: Place the Mushroom Stem on the Substrate

Now it’s time to place the mushroom stem on the substrate. Place the stem, so the base is touching the substrate.

Step 4: Cover the Container

Once the mushroom is in place, it’s time to cover the container. This is vital as it will help keep the humidity and prevent contamination. If you’re using a mason jar, you can screw on the lid. If you’re using a plastic container or Ziploc bag, you can seal it with tape.

Step 5: Wait for the Mushrooms to Grow

Now it’s time to wait for the mushrooms to grow. It can take 2-4 weeks for the mushrooms to start growing. You will know the mushrooms are ready to harvest when the caps start to open up.

Step 6: Harvest the Mushrooms

Once the mushrooms are ready to harvest, it’s time to cut them from the stem. Use a sharp knife to make sure you don’t damage the mushrooms. After you’ve cut the mushrooms from the stem, you can enjoy them fresh or cook them however you like. And that’s it! You’ve successfully grown mushrooms from scraps.

After Care

Once the mushroom growth media has been prepared and the mushroom stem has been placed, you must monitor the humidity and temperature. You should keep the mycelium container in the dark place as mushrooms need darkness to fruit. The ideal temperature for mushroom growth is between 60-70 degrees Fahrenheit.

You also need to maintain high humidity for the mushrooms to grow properly. You should cover the container with a lid or plastic wrap to create a humid environment. You can also mist the substrate with water to increase the humidity. Mushrooms will start to fruit within 2-4 weeks. Once the caps start to open, they are ready to harvest.

Mycelium will keep pinning as long as the environmental conditions are favorable. Once you see mushrooms, you can expect to see more every day or two. You have to prevent contamination and keep an eye on the humidity and temperature, which is difficult to do without proper knowledge.

How Do You Regrow Mushrooms From Scraps

Best Substrate For Mushroom Growing

Mushrooms require a substrate that is dense in woody, fibrous materials and contains a small amount of nitrogen, magnesium, potassium, calcium, sulfur, and phosphorus. The substrate should also be slightly acidic with a pH level of 5-6.5.

In addition, the substrate needs to have a good structure for air exchange and a moisture content of 50-70%. Finally, the substrate should be free of competing organisms. One way to create a substrate that meets all of these requirements is to mix together equal parts straw, sawdust, and compost. This mixture can then be placed in a container and incubated at the appropriate temperature until the mycelium has colonized the substrate.

Once the mycelium has colonized the substrate, you can use it in fruit mushrooms. So, as you see, there is no best substrate for mushroom growing. Each substrate has its own benefits and drawbacks. The best substrate for you will depend on your specific needs and goals.

Some types of substrate that can be used for mushroom growing include:

  • Straw
  • Sawdust
  • Compost
  • Peat moss
  • Coconut coir
  • Coffee grounds
  • Cardboard

Each of these substrates has its own benefits and drawbacks. For example, straw is a good substrate for mushroom growing because it is dense in woody, fibrous materials. However, straw can also be difficult to find and is often contaminated with other organisms.

Some easy-to-find home substrates for mushroom growing include:

  • Coffee grounds
  • Cardboard
  • Residues and trash from previous crops
  • Other paper products, such as papers and other paper pulp (without hazardous inks)
  • Stumps
  • Other organic materials (e.g., corncobs, seeds, and banana leaves)

Related questions

Can You Grow Mushrooms From A Dried One?

Yes, you can grow mushrooms from a dried one. However, it is important to note that the success rate is lower when growing mushrooms from a dried one. If the mushroom is dried using higher temperatures, it will kill the spores. If you attempt to grow mushrooms from a dried one, it is best to use one that has been dried without using a dehydrator.

What Happens When You Bury A Mushroom?

When you bury a mushroom, the mycelium will start to break down the organic matter in the soil. This process is important for the growth of mushrooms. In addition, burying a mushroom will help to keep the mycelium from drying out.

Can You Use Shredded Paper To Grow Mushrooms?

You can use shredded paper as long as it does not contain any harmful dyes or chemicals. Other paper products, such as toilet paper rolls and egg cartons, can also be used to grow mushrooms.

Can You Grow Mushrooms From Food Scraps?

Yes, you can grow mushrooms from food scraps. However, it is important to ensure that the food scraps do not contain toxins or contaminants. Coffee grounds, dried fruits, and vegetables are good options for growing mushrooms.


Now you have the answer for “How Do You Regrow Mushrooms From Scraps?” Regrowing mushrooms at home is a great way to get fresh mushrooms. For this, you will need to take some time to learn about the process and have the proper supplies before you start. You can successfully regrow mushrooms from scraps with the right substrate and environmental conditions. It will be difficult, but it’s definitely worth the effort when you see the final result. Happy mushroom growing!

Credit to : Fabiosa Best Lifehacks

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Hello, I'm Dr. Chamika. I am a Researcher in Environment and Water quality, Aquatic organisms, and Environmental chemistry. My mission is to help other. You can use this knowledge to enhance your life THE BEST environments you possibly can.

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