You walk into the living room and spot a spider disappearing behind a plant pot.

Then another web appears beside the window.

Naturally, you start wondering whether there’s a way to make your home a little less inviting to them—without constantly reaching for sprays.

One popular suggestion is to grow strongly aromatic houseplants.

Plants such as mint, lavender, rosemary, and basil contain fragrant volatile compounds, some of which have demonstrated repellent activity against certain arthropods. However, there’s an important reality check: there’s limited evidence that simply placing a potted plant in a room will reliably keep spiders away.

So think of these plants as a potentially helpful addition to sensible spider prevention—not an invisible spider-proof barrier.

The bonus? Every plant on this list can make your home greener, more fragrant, or more useful.

1. Peppermint

Peppermint is probably the plant most commonly associated with natural spider deterrence.

Its leaves contain aromatic compounds responsible for that unmistakably intense mint fragrance.

There’s some interesting evidence behind the reputation. A laboratory study published in the Journal of Economic Entomology found that mint oil strongly repelled two spider species tested, although the researchers emphasized that results can vary between species.

But there’s an important difference between concentrated mint oil in an experiment and a peppermint plant sitting on your windowsill.

A living plant releases much lower concentrations of aromatic compounds.

Still, peppermint is easy to grow indoors with enough light, and brushing the leaves releases more fragrance.

Keep it in its own container because mint can spread aggressively.

Best location: Bright kitchen windowsills and sunny areas near frequently opened windows.

2. Lavender

Lavender smells wonderful to many people.

Its intense fragrance has also given it a long-standing reputation as an insect-deterrent plant.

Growing lavender successfully indoors requires one thing many “easy houseplant” lists forget to mention:

Lots of light.

This isn’t a plant for the darkest corner of your bedroom.

Put lavender beside one of your brightest windows and use a container and growing medium that drain well.

Good airflow is helpful too.

While there’s no guarantee a potted lavender plant will send every spider running, it provides attractive flowers and fragrant foliage regardless.

Best location: A bright, sunny windowsill.

3. Rosemary

Rosemary isn’t usually thought of as a houseplant, but it can be grown indoors when given sufficient light.

Its needle-like foliage contains intensely aromatic oils.

Run your fingers gently across the leaves and the fragrance becomes immediately stronger.

That’s why rosemary frequently appears on lists of plants suggested for making indoor areas less attractive to various crawling insects and spiders.

The evidence that the living plant itself reliably repels spiders is limited, so grow rosemary primarily because you enjoy it.

Give it excellent drainage, strong light, and good airflow.

Then steal a few sprigs whenever dinner needs them.

Best location: A sunny kitchen window.

4. Basil

Basil brings a completely different fragrance indoors.

Its leaves contain numerous volatile aromatic compounds, with the exact chemical profile varying among cultivars.

That strong fragrance has made basil another popular suggestion for homes where people want aromatic plants near windows and doors.

Again, don’t expect a basil plant to function like commercial pest control.

Grow it because it’s useful—and consider any deterrent effect a bonus.

Basil needs plenty of light indoors.

Regular harvesting encourages bushier growth, and pinching off developing flower heads can keep plants producing leaves longer.

Best location: Bright kitchen windows.

5. Lemon Balm

Rub a lemon balm leaf between your fingers and you’ll understand its name immediately.

The foliage releases a fresh lemony fragrance.

Lemon balm (Melissa officinalis) belongs to the mint family and can be grown in containers indoors if it receives sufficient light.

Its aromatic foliage makes it another plant commonly suggested for areas where crawling pests are unwanted.

But the same warning applies:

Fragrant doesn’t automatically mean scientifically proven spider repellent.

Treat lemon balm as a pleasant aromatic herb rather than your home’s primary pest-control system.

Pruning regularly can also keep indoor plants compact and encourage fresh leafy growth.

Best location: A bright windowsill near the kitchen or living area.

6. Eucalyptus

Few plants produce foliage with a fragrance as recognizable as eucalyptus.

The leaves contain strongly aromatic compounds, including eucalyptol in many species.

This makes eucalyptus a popular ingredient in scented products and a frequent inclusion in natural pest-deterrent discussions.

However, eucalyptus isn’t necessarily an effortless indoor plant.

It typically wants very bright light, and many species eventually become large trees when grown outdoors.

If you’re keeping one inside, choose an appropriate species and be prepared to prune it.

Also consider pets and children before growing eucalyptus where leaves could be chewed or eaten.

Best location: One of the brightest windows in your home.

7. Chrysanthemum

Chrysanthemums deserve a special mention because they’re connected to one of the world’s best-known groups of insecticides.

Certain chrysanthemum flowers naturally contain compounds called pyrethrins.

Pyrethrins affect the nervous systems of insects and are used in numerous pesticide products.

But here’s where an online gardening claim can become misleading:

A potted chrysanthemum isn’t equivalent to pyrethrin insecticide.

Simply placing blooming chrysanthemums in a room doesn’t release a cloud of natural pesticide.

So enjoy chrysanthemums for their colorful flowers rather than expecting them to eradicate spiders.

Best location: A bright location where the plant receives plenty of light.

8. Mint

Peppermint isn’t the only mint worth growing.

Spearmint and other aromatic Mentha varieties can also provide strongly scented foliage.

Mint is particularly convenient because harvesting actually helps keep the plant compact.

Snip stems for drinks, salads, sauces, or cooking and the plant generally responds by producing additional branching.

Give indoor mint plenty of light and don’t allow the growing medium to remain completely dry for extended periods.

Because mint grows rapidly, it may also require occasional repotting or division.

And just like peppermint, the strongest spider-repellent evidence relates to mint oil rather than simply having a living mint plant nearby.

Best location: Bright windows near kitchens, patios, and entrances.

Do Spider-Repelling Plants Actually Work?

This is where we need to separate an interesting idea from an exaggerated gardening claim.

There’s evidence that specific concentrated plant compounds and essential oils can repel some arthropods.

For spiders specifically, researchers testing three natural products found that mint oil strongly repelled the two spider species examined. Interestingly, lemon oil—another commonly recommended online remedy—didn’t repel either species

But that doesn’t prove that putting one peppermint plant beside your couch will keep the entire room spider-free.

A plant releases far smaller quantities of volatile compounds than concentrated essential oil.

So enjoy these plants as one small part of your prevention strategy.

Why Are Spiders Coming Inside Anyway?

Finding spiders indoors doesn’t necessarily mean your house is dirty.

They’re usually looking for:

Food

Shelter

Mates

Suitable environmental conditions

And spider food means insects.

If flies, moths, mosquitoes, ants, or other small arthropods regularly enter your home, spiders may follow.

Reducing the insects they’re feeding on can therefore be more effective than trying to find a smell spiders supposedly hate.

Seal the Places They’re Getting In

If you’re serious about reducing indoor spiders, inspect the building itself.

Look around:

Window frames

Door frames

Utility openings

Foundation gaps

Damaged screens

Spaces underneath exterior doors

Repair screens and seal appropriate cracks and gaps.

A peppermint plant may make your windowsill smell fantastic.

A properly sealed gap actually prevents spiders and their prey from crawling through it.

Don’t Forget the Insects

Spiders don’t usually wander around your home because they’re interested in the furniture.

They’re predators.

If a particular room consistently contains plenty of insect prey, it can become an attractive hunting ground.

Consider what might be bringing insects inside.

Bright outdoor lighting around doors and windows can attract flying insects.

Open windows without screens provide easy access.

Food crumbs can support other household pests.

Address the prey and you may indirectly reduce the predators.

Keep Clutter Away From Quiet Corners

Cardboard boxes.

Stacks of papers.

Unused storage.

Piles of clothing.

Dark spaces behind furniture.

These can create sheltered areas where spiders remain undisturbed.

You don’t need to turn your house into an empty showroom.

Simply reducing long-term clutter in seldom-disturbed locations makes those areas easier to inspect and clean.

Vacuuming webs and egg sacs also removes existing spider activity rather than merely trying to mask the area with fragrance.

What About Peppermint Essential Oil?

The scientific study mentioned earlier tested mint oil, not potted peppermint plants.

That doesn’t mean you should start spraying concentrated essential oil around your house.

Essential oils are highly concentrated substances.

They can irritate skin and eyes, damage certain surfaces, and create concerns around pets depending on the product, concentration, and exposure route.

Don’t assume “natural” automatically means harmless.

If you choose a commercially formulated pest-control product, follow its directions carefully.

Put Plants Where They Make the Most Sense

If you’re experimenting with aromatic plants, concentrate them near places where spiders or insects commonly appear.

That might include:

Windows

Patio doors

Bright kitchens

Sunrooms

But don’t sacrifice the plant’s health simply to put it beside a doorway.

Lavender, basil, rosemary, and eucalyptus need substantial light.

A dark entryway may be a terrible location for them.

Healthy plants come first.

The 8 Plants at a Glance

One Important Problem With This List

Notice something?

Most of these plants want good light.

That’s because many of the herbs popularly described as spider-repellent plants aren’t classic low-light houseplants.

Rosemary wants sunshine.

Lavender wants sunshine.

Basil wants plenty of light.

Eucalyptus wants plenty of light.

If you put them in a dark hallway because that’s where you saw a spider, the plant may struggle long before the spider does.

Choose locations where the plant can actually grow successfully.

A Better Spider-Prevention Strategy

Rather than relying on plants alone, combine several simple approaches.

Grow aromatic plants where conditions suit them.

Repair damaged window and door screens.

Seal appropriate gaps around entry points.

Reduce insects that spiders prey upon.

Vacuum webs and egg sacs.

Reduce clutter in undisturbed areas.

This tackles the reasons spiders are indoors instead of depending entirely on scent.

Should You Kill Every Spider You See?

Not necessarily.

Spiders are predators and can consume flies, mosquitoes, moths, and other small arthropods.

Many indoor spiders are simply living quietly in places where they can find prey.

If an unwanted spider can be safely relocated and doing so is appropriate for the species and your location, that’s an option.

However, avoid handling spiders you can’t identify.

If potentially medically significant spiders occur where you live and you have a persistent indoor problem, professional pest-management advice may be appropriate.

Final Thoughts

Peppermint, lavender, rosemary, basil, lemon balm, eucalyptus, chrysanthemums, and mint can all add wonderful fragrance and greenery to your home.

And some plant-derived aromatic compounds—including mint oil—have shown genuine spider-repellent effects under experimental conditions.

But there’s a big difference between concentrated plant extracts and a living plant in a pot.

So don’t expect eight houseplants to create an invisible spider force field around your home.

Grow them because they’re beautiful, fragrant, or useful.

Then do the things that make the biggest practical difference: seal entry points, repair screens, reduce insect prey, remove webs, and clean quiet hiding places.

If the plants make your home a little less appealing to spiders along the way?

Consider that a very welcome bonus.