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Spider plants do not actually absorb mold spores.
If you’ve heard that spider plants absorb mold spores, you’re not alone—it’s a widely circulated claim on the internet.
But the truth is that spider plants have no biological ability to absorb mold spores because mold spores are solid particles and not gases.
In this post, we’ll answer the question “do spider plants actually absorb mold spores?” once and for all and clear up the confusion.
We’ll also explore what spider plants can do and how to really tackle mold spores in your home.
So let’s get into the science behind spider plants and mold spores.
Do Spider Plants Absorb Mold Spores? Let’s Look at the Science
What Mold Spores Are
Mold spores are tiny seeds produced by fungi to reproduce and spread.
They range from 1 to 30 microns in size, making them visible only under a microscope.
Unlike VOCs which are single molecules, mold spores are complex biological structures with a cell wall.
Spider plants have stomata that open for gas exchange, but they cannot pull in particles the size of mold spores.
Therefore, the claim that spider plants absorb mold spores does not align with basic plant physiology.
If you still wonder “do spider plants absorb mold spores?” the answer is no because of this physical limitation.
How Spider Plants Process Air
Spider plants take in carbon dioxide and release oxygen through their leaves.
They also absorb certain chemical vapors through the same stomata.
The process depends on molecules dissolving into the leaf’s internal moisture.
Mold spores are not water-soluble and are too large to enter stomata openings.
So even if a spore lands on a leaf, it will not be absorbed; it will just sit there on the surface.
This is why no credible source claims spider plants actually absorb mold spores in a meaningful way.
What Research Actually Shows
NASA’s Clean Air Study in the 1980s showed spider plants remove formaldehyde.
That study never tested mold spores, yet the myth that spider plants absorb mold spores grew from that research.
No subsequent science has confirmed any plant can absorb mold spores from the air.
If you do a search for “do spider plants absorb mold spores,” you’ll find many articles repeating the myth without evidence.
Scientific consensus remains that spider plants do not absorb mold spores.
So when someone asks “can spider plants absorb mold spores?” the answer is a clear no.
What Spider Plants Can Actually Do for Your Air
They Absorb Formaldehyde and Other VOCs
Spider plants are champions at absorbing formaldehyde from indoor air.
Formaldehyde is found in plywood, carpets, and some cleaning products.
By absorbing these chemicals, spider plants can improve overall air quality.
But remember, absorbing VOCs is not the same as absorbing mold spores.
Don’t confuse the two when evaluating plant benefits for your home.
The ability to absorb VOCs is why people mistakenly think spider plants absorb mold spores too.
They Add Oxygen and Moisture
During photosynthesis, spider plants release oxygen, which is great for breathing.
They also transpire water vapor, raising the humidity in the room.
In dry climates, this can be beneficial, but in damp homes, it might encourage mold growth.
So while they don’t absorb mold spores, they can influence the environment where mold grows.
If you use spider plants in a humid room, you might actually increase mold spore activity.
This is an ironic twist for anyone hoping spider plants absorb mold spores.
They Provide Psychological Benefits
Houseplants like spider plants reduce stress and boost mood.
Caring for them can make you more mindful of your home’s air quality.
If that leads you to address mold issues, then spider plants help indirectly.
But again, they do not absorb mold spores directly.
Even though spider plants don’t absorb mold spores, they are still worth having.
They simply serve a different purpose than mold spore removal.
Common Beliefs vs. Reality About Spider Plants and Mold
Belief: Spider Plants Suck Mold Out of the Air
Some people think spider plants act like vacuum cleaners for mold spores.
Reality: Plants have no suction mechanism; they rely on passive gas exchange.
Mold spores are too heavy and large to be pulled into leaves passively.
No plant can actively draw in solid particles; only fans and filters can do that.
So the idea that spider plants absorb mold spores by sucking them in is false.
Belief: One Plant Can Purify a Whole Room
It’s often said that one spider plant per 100 square feet cleans the air.
That’s based on outdated interpretations of NASA research.
Even for VOCs, you’d need many plants to make a noticeable difference.
For mold spores, even a hundred spider plants won’t absorb them.
The notion that spider plants absorb mold spores on a room-wide scale is unrealistic.
Belief: All Houseplants Work the Same Way
Different plants target different pollutants.
Some plants are better at absorbing benzene, others at trichloroethylene.
But no plant has been found to absorb mold spores.
Spider plants are no exception to this rule.
Each plant has its own strengths, but absorbing mold spores is not one of them.
So when you ask “do spider plants actually absorb mold spores?” the answer depends on the plant type, but for spider plants it’s no.
Effective Ways to Reduce Mold Spores Indoors
Control Humidity
Mold spores need moisture to germinate and become airborne.
Keep indoor humidity below 50% using dehumidifiers or air conditioners.
This is far more effective than hoping spider plants absorb mold spores.
A dehumidifier can remove moisture that feeds mold, while spider plants can’t directly remove spores.
If you’re serious about mold, humidity control is step one.
Use HEPA Filters
HEPA filters physically capture particles as small as 0.3 microns.
Many mold spores are larger than that, so they get trapped easily.
Unlike spider plants, HEPA filters do absorb mold spores from the air.
Running a HEPA air purifier in mold-prone areas is a proven strategy.
No houseplant can match the effectiveness of a good filter.
Fix Leaks and Dry Wet Areas
Promptly repair any plumbing leaks or water damage.
Dry bathrooms and basements after use.
Eliminate the water source, and mold spores cannot grow.
Spider plants won’t help with structural moisture issues.
Addressing water problems stops mold at its source.
So, Do Spider Plants Actually Absorb Mold Spores?
Spider plants do not actually absorb mold spores.
The belief that spider plants absorb mold spores is a myth that has spread widely online.
If you’ve been caring for spider plants hoping they absorb mold spores, I’m sorry—that’s not how it works.
However, spider plants are still wonderful plants that can absorb chemical pollutants and brighten your home.
For actual mold spore removal, focus on dehumidifiers, HEPA filters, and moisture control.
Now you have the facts: spider plants do not absorb mold spores, but they are still worth having for other reasons.
I hope this article answers your question “do spider plants actually absorb mold spores?” clearly.