Why Is My Fiddle Leaf Fig Growing Mushrooms

Your fiddle leaf fig growing mushrooms is a sign of overly moist soil and organic matter breaking down, not a disease that will harm your plant.
 
Those little mushrooms popping up in the pot are almost always harmless saprophytes that feed on decaying wood, bark, or peat in your soil mix.
 
So if you’ve noticed your fiddle leaf fig growing mushrooms and felt a spike of panic, take a deep breath—your tree is probably fine, but your watering habits might need a tweak.
 
In this post, we’ll dig into exactly why your fiddle leaf fig growing mushrooms happens, what those fungi mean for your plant’s health, and how to prevent them from coming back.
 
Let’s get to the root of it.
 

Why Your Fiddle Leaf Fig Growing Mushrooms Is Happening

The short answer is that your fiddle leaf fig growing mushrooms comes down to three things: moisture, organic matter, and spores.
 
Mushrooms are the fruiting bodies of fungi, and fungi thrive in warm, damp, dark environments.
 
Your fiddle leaf fig’s potting soil is basically a buffet for these organisms when it stays wet for too long.
 
Here’s a closer look at the main reasons behind your fiddle leaf fig growing mushrooms.
 

1. Overwatering Creates the Perfect Fungus Haven

The number one trigger for your fiddle leaf fig growing mushrooms is overwatering.
 
When you water too frequently or give your plant more water than it can use, the soil stays saturated.
 
That constant moisture breaks down organic material faster, which feeds the fungi living in the pot.
 
And once the fungi have food and water, they’ll send up those little caps as part of their reproductive cycle.
 
So if you’re asking why your fiddle leaf fig growing mushrooms, check how often you’re watering first.
 
A good rule is to stick your finger an inch or two into the soil; if it feels wet, wait a few more days.
 

2. Rich, Organic Soil Mixes Are Fungus Fuel

Many commercial potting mixes contain composted bark, coconut coir, or peat moss.
 
These organic ingredients are excellent for drainage and aeration, but they’re also prime real estate for mushroom spores.
 
When your fiddle leaf fig growing mushrooms appears, it’s often because the soil is chock-full of decomposing woody matter.
 
Fungi break down that material for nutrients, and the mushrooms you see are just the visible payoff of that decomposition process.
 
Your plant isn’t being attacked; it’s actually sharing its home with tiny recyclers.
 

3. Spores Were Already in the Pot

Mushroom spores are everywhere—on your hands, in the air, and especially in bagged soil.
 
Most of the time, those spores stay dormant until conditions are right.
 
When you provide warmth, humidity, and wet soil, those spores wake up and start colonizing the pot.
 
That’s why your fiddle leaf fig growing mushrooms can happen out of nowhere, even if you haven’t changed anything recently.
 
It’s not a sign of contamination; it’s just nature doing its thing in a cozy environment.
 

4. Poor Air Circulation Keeps Humidity High

If your fiddle leaf fig is tucked into a corner with little airflow, the soil surface stays damp longer.
 
Stagnant air around the pot creates a mini greenhouse effect that mushrooms absolutely love.
 
Your fiddle leaf fig growing mushrooms is more likely in these low-airflow spots.
 
Moving your plant to a spot with gentle breezes or running a small fan nearby can dry out the topsoil faster.
 
And when the soil surface dries, mushroom growth slows way down.
 

Are Mushrooms Harmful to Your Fiddle Leaf Fig?

The quick answer is no, the mushrooms themselves won’t harm your fiddle leaf fig.
 
They’re not parasitic and they don’t attack living roots.
 
In fact, many of these fungi form beneficial relationships with plants, helping break down nutrients into forms the roots can absorb.
 
So your fiddle leaf fig growing mushrooms isn’t a sign of sickness or root rot by itself.
 
However, the underlying cause—excess moisture—can be dangerous if left unchecked.
 
Root rot, caused by waterlogged soil, is a real threat to fiddle leaf figs.
 
So while the mushrooms are harmless, they’re telling you that your watering schedule or soil drainage needs adjusting.
 
Pay attention to the mushrooms as a warning sign rather than the enemy.
 

But Wait, Are All Mushrooms Safe?

Most mushrooms that pop up in houseplant pots are from the Leucocoprinus or Coprinus families, which are non-toxic to humans and pets in small amounts.
 
But if you have curious kids or pets, it’s still smart to remove them as soon as you see them.
 
Your fiddle leaf fig growing mushrooms could be a variety that causes mild stomach upset if nibbled.
 
Wearing gloves, carefully pluck the mushrooms and discard them in a sealed bag.
 
And don’t worry about the mycelium (the white web-like network) in the soil; it’s harmless and will die off once conditions dry out.
 

How to Stop Your Fiddle Leaf Fig Growing Mushrooms

Now that you know why your fiddle leaf fig growing mushrooms, here’s how to kick those fungi out for good.
 

1. Let the Soil Dry Out Completely Between Waterings

Your fiddle leaf fig prefers to be on the drier side.
 
Water thoroughly, then wait until the top 2 to 3 inches of soil are completely dry before watering again.
 
This might mean watering every 7 to 10 days, depending on your home’s humidity and light.
 
By letting the soil dry, you remove the moisture mushrooms need to survive.
 
Your fiddle leaf fig growing mushrooms will stop because the fungi can’t fruit without consistent dampness.
 

2. Improve Drainage to Prevent Waterlogging

If the soil stays soggy for days, check the drainage holes in your pot.
 
Make sure they’re not blocked, and consider adding perlite or coarse sand to your next repotting mix.
 
A well-draining soil mix will hold moisture for the roots but shed excess water quickly.
 
This simple change can make your fiddle leaf fig growing mushrooms a rare event.
 

3. Scoop Out the Mushrooms and Topsoil

When you spot mushrooms, gently remove them along with the top inch of soil.
 
Replace that soil with fresh, dry potting mix.
 
This removes the majority of spores and the fruiting bodies before they release more spores into your home.
 
Doing this twice over a few weeks will break the cycle.
 
Your fiddle leaf fig growing mushrooms will taper off naturally.
 

4. Increase Light and Airflow

Mushrooms love dark, stuffy spots.
 
Move your fiddle leaf fig to a location with bright, indirect light.
 
Light warms the soil surface and helps dry it out.
 
You can also prune surrounding plants or open a window to boost airflow.
 
A breezier spot makes it much harder for your fiddle leaf fig growing mushrooms to continue.
 

So, Why Is My Fiddle Leaf Fig Growing Mushrooms?

Your fiddle leaf fig growing mushrooms is a sign of overly wet soil, rich organic matter, and a bit of warmth—nothing more sinister.
 
The mushrooms are harmless, but they alert you to correct your watering routine.
 
Let the soil dry out between waterings, improve drainage, and remove the mushrooms as they appear.
 
With these tweaks, your fiddle leaf fig growing mushrooms will be a thing of the past.
 
Now you can enjoy your beautiful tree without those little fungal surprises.
 
Happy growing!