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You can absolutely grow a mushroom from another mushroom, and it’s one of the most rewarding projects you can try in your kitchen.
When you grow a mushroom from another mushroom, you’re essentially cloning the parent fungus to create new, healthy mushrooms from its living tissue.
This process is not only possible but surprisingly simple for beginners, and it saves you money on buying new spawn every time.
In this post, we’ll break down exactly how you can grow a mushroom from another mushroom, what tools you need, and the common mistakes to avoid along the way.
Let’s dive into the wonderful world of mushroom propagation and get your first batch started.
Why You Can Grow A Mushroom From Another Mushroom
The reason you can grow a mushroom from another mushroom comes down to how fungi reproduce and spread.
Mushrooms are just the fruiting body of a much larger organism called mycelium, which lives underground or inside wood.
When you take a piece of that living tissue, you can grow a mushroom from another mushroom by providing the right environment for mycelium to regenerate.
Let’s explore the main ways you can grow a mushroom from another mushroom, starting with the most beginner-friendly method.
1. Tissue Cloning Is the Easiest Route
Tissue cloning is the most direct way to grow a mushroom from another mushroom.
You take a small piece from the inside of a fresh mushroom stem, and that piece contains living cells that can regrow into a full network.
This method is reliable because the internal tissue is clean and free from contaminants on the surface.
When you grow a mushroom from another mushroom this way, you place the tissue on a sterile medium like agar or grain.
Within days, you’ll see white, thread-like mycelium spreading out from that tiny sample.
Once that mycelium is healthy, you can transfer it to a larger substrate and eventually harvest new mushrooms.
2. Spore Prints Give You a Genetic Mix
Another common way to grow a mushroom from another mushroom is by using spores instead of tissue.
Spores are like seeds, and you can collect them by placing a mushroom cap face-down on paper or foil.
After a few hours, you’ll see a pattern of spores, and you can use these to germinate new mycelium.
However, keep in mind that spores produce genetic variation, so the mushrooms you grow won’t be exact clones of the parent.
If you want identical results, tissue cloning will serve you better when you grow a mushroom from another mushroom.
Still, spore prints are fantastic for growing exotic varieties and expanding your collection over time.
3. Stem Butt Propagation Is a Fun Shortcut
You can even grow a mushroom from another mushroom using the stubby base of the stem that you’d normally throw away.
This method works best with store-bought mushrooms like oyster or shiitake that still have a little living tissue at the base.
Simply cut off the very bottom of the stem, place it in moist cardboard or coffee grounds, and keep it humid.
Within a couple of weeks, mycelium will start to colonize the surrounding material.
This is a low-cost way to grow a mushroom from another mushroom without needing a sterile lab setup.
Step-by-Step: How To Grow A Mushroom From Another Mushroom
Now that you understand the science, let’s walk through a simple process to grow a mushroom from another mushroom at home.
This step-by-step guide focuses on the tissue cloning method because it gives you the most consistent results.
Step 1: Pick a Fresh, Healthy Parent Mushroom
Your success starts with choosing the right mushroom to grow a mushroom from another mushroom.
Look for a fresh specimen with a firm stem and no soft spots, mold, or discoloration.
The fresher the mushroom, the more viable the living cells will be.
Avoid mushrooms that have been sitting in the fridge for weeks because their tissue may already be dying.
Step 2: Sterilize Your Tools and Workspace
When you grow a mushroom from another mushroom, contamination is your biggest enemy.
You’ll need a sharp knife or scalpel, tweezers, and your chosen substrate like grain or sawdust.
Wipe everything with 70% isopropyl alcohol, and work in a clean area with minimal air movement.
Wearing gloves and a face mask helps too because you’re trying to create a sterile environment.
This step is non-negotiable if you want a high success rate.
Step 3: Cut a Small Piece of Inner Tissue
Use your sterilized knife to tear the mushroom stem in half lengthwise, exposing the clean inner flesh.
Cut a tiny piece about the size of a grain of rice from the center of that exposed area.
This inner tissue hasn’t touched the air or dirt yet, so it’s the cleanest part you can use.
Place that piece onto your prepared substrate immediately and close the container quickly.
Step 4: Wait for Mycelium to Colonize
Now you just need patience as your new mycelium grows and spreads through the substrate.
Keep the container in a dark, warm spot around 70–75°F (21–24°C) with good airflow but no direct drafts.
Within one to three weeks, you’ll see white fluffy growth linking through the grains or sawdust.
Once the substrate is fully white, you can move it to a fruiting chamber with fresh air and humidity.
Step 5: Harvest Your New Mushrooms
After a few more days, tiny pins will appear, and they’ll quickly develop into full mushrooms.
When you harvest these, you’ll have successfully learned to grow a mushroom from another mushroom.
You can repeat this process indefinitely, always taking a piece of your newest harvest to start the next cycle.
Common Mistakes When You Grow A Mushroom From Another Mushroom
Even with clear steps, things can go wrong, and it’s usually due to a few predictable mistakes.
Here’s what to watch out for so you can grow a mushroom from another mushroom successfully on your first try.
Contamination from Dirty Hands or Tools
The number one reason your project fails is contamination from bacteria or mold spores in the air.
If you see green, black, or orange spots instead of white mycelium, toss that batch out.
Remember, when you grow a mushroom from another mushroom, you’re working with living tissue that’s very vulnerable.
Sterilize everything again, and consider using a still-air box made from a large plastic tote with arm holes.
Using Mushrooms That Are Too Old or Dried
Old mushrooms have much lower viability, and dried mushrooms are essentially dead for cloning purposes.
Always use fresh mushrooms that haven’t been dehydrated or heavily processed.
If you’re trying to grow a mushroom from another mushroom that you bought at a grocery store, pick the freshest pack available.
Check the harvest date if possible, and avoid anything slimy or bruised.
Wrong Substrate for the Species
Different mushrooms prefer different food sources, and you must match the substrate to the species.
Oyster mushrooms love straw or cardboard, while shiitake prefers hardwood sawdust.
If you try to grow a mushroom from another mushroom on the wrong substrate, the mycelium will struggle and may never fruit.
Do a quick search on your mushroom variety’s preferred growing medium before you start.
This small research step saves you weeks of frustration.
Poor Humidity and Fresh Air Exchange
During the fruiting stage, lack of humidity or stale air will stop mushrooms from forming.
Mushrooms are about 90% water, so they need moist conditions to develop properly.
Mist your fruiting chamber a few times a day and fan it to remove carbon dioxide.
If you provide these simple conditions, your ability to grow a mushroom from another mushroom becomes almost foolproof.
So, Can You Grow A Mushroom From Another Mushroom?
You can grow a mushroom from another mushroom, and it’s a fascinating skill that any home grower can master.
Yes, you can grow a mushroom from another mushroom using tissue cloning, spore prints, or even stem butts.
The process takes a little patience and attention to cleanliness, but the rewards are fresh mushrooms at a fraction of the cost.
Whether you’re a curious beginner or a seasoned gardener, cloning mushrooms is a satisfying way to expand your harvest.
Now that you know exactly how to grow a mushroom from another mushroom, grab a fresh mushroom and give it a try.
Your first batch of homegrown mushrooms is closer than you think, and you’ll never look at store-bought fungi the same way again.