How to Get Rid of Ants in a Houseplant: Why They Show Up and How to Clear Them Out

You water a pothos on the windowsill and a line of small brown ants scrambles out of the soil and up the side of the pot.

If you are searching for how to get rid of ants in a houseplant, the fix is usually simple once you know why they moved in.

The short version: Ants in a pot are either nesting in dry, loose soil or feeding on honeydew from sap-sucking pests like aphids, mealybugs, or scale.

Flush the colony out with a soapy water soak or a repot, treat any honeydew pests on the leaves, and set bait near where the ants enter your home.

This guide covers how to confirm you have ants, the step-by-step removal method, which home remedies help, and how to keep them from coming back.

Check These First

• Look at the undersides of leaves and the stems for sticky residue, cottony clumps, tiny green or black bugs, or brown bumps. These are honeydew producers that attract ants.
• Push a finger 2 inches into the soil. Bone-dry, crumbly soil is easier for ants to tunnel into and nest in.
• Watch where the ants travel. A trail running from a window frame, baseboard, or door means a colony outside the pot is foraging inside it.
• Check whether the plant spent the summer outdoors on a balcony or patio. Pots brought back inside often carry a colony with them.
• Confirm they really are ants: narrow waist, elbowed antennae, and six legs. Several common soil critters get mistaken for ants.

Why Are There Ants in My Houseplant?

Ants are in your houseplant for one of two reasons: food or shelter. Most indoor cases come down to a honeydew-producing pest on the plant or a colony that found the pot’s soil a convenient place to nest.

They Are Farming Honeydew

Aphids, mealybugs, soft scale, and whiteflies feed on plant sap and excrete a sugary liquid called honeydew. Ants collect it as food and will actively protect these pests from predators, moving them around the plant to keep the supply flowing.

A small handheld magnifying glass makes it much easier to spot young aphids or mealybug crawlers tucked into leaf joints. If you see ants walking up and down stems rather than staying in the soil, honeydew is the likely draw.

They Are Nesting in the Pot

Some ants move into potting soil because it offers warmth, cover, and loose texture that is easy to excavate. Pots that dry out deeply between waterings are more appealing than consistently moist ones.

A soil moisture meter can tell you whether your watering routine leaves the root zone dry for long stretches. Plants sitting near a radiator or forced-air vent in a Chicago winter often dry out faster than you expect, which can make the pot more inviting.

They Came in From Outside

Plants that summer on a fire escape, balcony, or porch are prime targets for outdoor ants. When you bring those pots inside in fall, the colony comes too. Ants can also follow scent trails from cracks around windows or doors straight to an indoor pot.

Ants or Something Else? How to Identify What’s in the Pot

Ants have a pinched waist, elbowed antennae, and move with purpose along trails. If the insects you see jump, fly, or wriggle, you are likely dealing with a different soil dweller that needs a different fix.

Common Lookalikes

Many tiny bugs live in potting soil, and some are harmless. Use this table to sort them out before you start treatment.

Critter	What you see	Usual cause	Harmful to plant?
Ants	Marching trails, narrow waist, elbowed antennae	Honeydew pests, dry soil, outdoor colony	Indirectly
Springtails	Tiny white or gray specks that jump when disturbed	Consistently wet soil, organic matter	Rarely
Fungus gnats	Small black flies hovering near the soil	Overwatering	Larvae can harm seedlings
Ant larvae or pupae	White, rice-like grains in clusters	Active nest in the pot	Indirectly
Pot worms	Thin white threadlike worms	Wet, acidic, rich soil	Rarely
Thrips	Slender specks on leaves, silvery streaks	Indoor infestation spread on plants	Yes

If the pests leap when you water, read about springtails in houseplant soil, what they are and how to get rid of them, since they need drier soil rather than ant treatment.

If you see small dark flies buzzing around the pot, this guide on how to get rid of black bugs from my potted house plant covers fungus gnats and similar pests.

Spotting an Active Nest

A nest in the pot often shows up as soil piled loosely on the surface, ants pouring out when you water, or white egg-shaped pupae near the roots.

Those white grains are easy to confuse with other organisms, so compare them with white worms in house plant soil, what they are and how to get rid of them if you are unsure.

Do Ants Damage Houseplants?

Most ants do not eat healthy houseplants, but they cause real problems indirectly. The biggest risks are root disturbance from tunneling and the population boom of sap-sucking pests that ants protect.

Root and Soil Problems

A colony excavating tunnels creates air pockets around roots. Those pockets dry out quickly, so roots in that area can shrivel and the plant may wilt even after watering.

Water may also run straight through tunnels and out the drainage hole without wetting the root ball.

Pest Outbreaks

Because ants defend aphids, mealybugs, and scale from natural predators, these pests can multiply quickly on a plant guarded by ants. Heavy sap feeding leads to yellowing leaves, distorted new growth, and sticky surfaces where black sooty mold grows.

Sooty mold blocks light from reaching the leaf.

Household Nuisance

Ants foraging from a pot will often explore kitchen counters and pantries. Carpenter ants, which are larger and usually black, are a different concern because they nest in damp or damaged wood.

If you see large ants indoors regularly, check window frames and sills for soft or rotting wood.

How to Get Rid of Ants in a Houseplant Step by Step

The most reliable way to clear ants from a pot is to flood them out with a soapy water soak, then treat the plant for any honeydew pests. For heavy nests, repotting into fresh soil is faster and more thorough.

Step 1: Move the Plant and Inspect It

Take the pot to a bathtub, sink, or outdoor space if the weather allows. Check every leaf, stem, and leaf joint for pests and honeydew. Note what you find so you can treat the plant after the ants are gone.

Step 2: Soak the Pot

Fill a bucket or basin with lukewarm water and add a mild liquid soap at roughly 1 to 2 teaspoons per quart. The water should come up to just below the soil line.

Set the pot in the basin and let it soak for 15 to 20 minutes.

Water fills the tunnels and forces ants to the surface, where the soap breaks down their protective coating. Brush away ants as they climb out. Afterward, rinse the soil with plain water to wash out soap residue, then let the pot drain completely.

This method works best on plants that tolerate a thorough drench, such as pothos, philodendron, peace lily, and most tropical foliage plants. Skip it for succulents and cacti, which are better repotted.

Sophia’s tip: Use a plain, unscented liquid soap without degreasers, bleach, or added fragrance. Strong dish detergents can burn tender roots, so mix on the weak end of the range for ferns, calatheas, and other sensitive plants.

Step 3: Repot If the Nest Is Large

If ants keep coming after a soak, or you see many white pupae, repot the plant. Remove it from the container outdoors or over a trash bag, shake off as much old soil as the roots allow, and rinse the root ball gently.

Wash the pot with hot, soapy water before reusing it. Replant in fresh, sterile potting mix appropriate for the plant. Discard the old soil in a sealed bag rather than adding it to other pots.

Step 4: Treat the Foliage

Wipe leaves with a damp cloth to remove honeydew and sooty mold. Then treat any sap-sucking pests you found during inspection, which is covered in the next section. Clearing the food source is what keeps ants from returning.

Step 5: Set Bait Where Ants Enter

If ants are trailing in from outside, the colony that sent them is still alive. Ant bait stations placed along the trail near windows or baseboards let foragers carry slow-acting bait back to the nest.

Keep baits out of the pot itself and well away from pets and children.

Treat Aphids, Mealybugs and Scale to Remove the Food Source

If ants are climbing your plant’s stems, the real problem is usually a honeydew-producing pest. Treating that pest removes the reason ants are there in the first place.

Aphids

Aphids are small, soft, pear-shaped insects in green, black, or yellow that cluster on new growth. Rinse them off with a strong spray of lukewarm water in the shower, then follow with insecticidal soap every 5 to 7 days for 2 to 3 weeks.

Mealybugs

Mealybugs look like white cottony tufts in leaf joints and along veins. Dab individual bugs with a cotton swab dipped in 70% isopropyl alcohol, then spray the plant with insecticidal soap or neem oil weekly until no new ones appear.

Check the roots too, since some mealybugs feed below the soil.

Scale

Scale insects look like small brown or tan bumps fixed to stems and leaf undersides. Soft scale produces heavy honeydew.

Scrape them off with a fingernail or soft brush and treat with horticultural oil or alcohol swabs; this guide on how to get rid of scale on houseplants walks through a full treatment plan.

Keep Infested Plants Apart

Isolate any plant with sap-feeding pests at least a few feet from others until it has been clean for several weeks.

Some pests that ants do not farm, like thrips, spread the same way, so if you see silvery streaks on leaves, learn how to get rid of thrips on houseplants before they move to neighboring pots.

Pest	Honeydew?	First treatment	Follow-up
Aphids	Yes, heavy	Strong water spray	Insecticidal soap weekly
Mealybugs	Yes	Alcohol on cotton swab	Soap or neem oil weekly
Soft scale	Yes, heavy	Scrape or alcohol swab	Horticultural oil
Whiteflies	Yes	Yellow sticky cards	Insecticidal soap
Thrips	No	Rinse foliage	Soap or neem oil

Home Remedies for Ants in Houseplants: What Works and What Doesn’t

Some home remedies help, but many popular ones only repel ants briefly. The soapy soak and removing honeydew pests remain the most dependable approaches.

Remedies That Help

• Diatomaceous earth: A thin layer of food-grade diatomaceous earth on a dry soil surface or around the pot base damages ants that crawl through it. It stops working once wet, so reapply after watering. Avoid breathing the dust.
• Mild soap spray: A spray of 1 to 2 teaspoons of mild liquid soap per quart of water kills ants on contact and also controls soft-bodied pests. Test on one leaf first and wait 24 hours.
• Fresh potting mix: Repotting removes the nest, eggs, and larvae in one step, which no surface treatment can match.
• Moat barrier: Setting the pot on a saucer or tray of water, with the pot raised on pebbles so it does not sit in water, stops ants from climbing up from the floor or shelf.

Remedies With Limited Effect

• Cinnamon: Sprinkling ground cinnamon on the soil may deter ants temporarily but will not remove an established nest.
• Citrus peels and vinegar: Their scent can disrupt trails on counters, but vinegar poured into soil can harm roots and change soil pH. Use vinegar only to wipe surfaces, not in the pot.
• Coffee grounds: There is little evidence they drive ants away, and grounds can compact and stay soggy in indoor pots.

Remedies to Avoid

Do not pour boiling water, bleach, or outdoor ant granules into a houseplant pot. They will damage or kill roots. Avoid homemade borax mixes in pots too, since borax can harm plants and is risky around pets.

Sophia’s tip: If you use diatomaceous earth, apply it with a small dry paintbrush or a squeeze bottle so you get a light dusting instead of a thick crust.

Water from below by setting the pot in a tray for 20 minutes so the barrier stays dry.

How to Keep Ants Out of Your Houseplants for Good

Prevention comes down to removing food sources, keeping soil from becoming a dry, inviting nest, and blocking the paths ants use to reach your plants.

Inspect Plants Regularly

Check leaf undersides and stems each time you water. Catching aphids or mealybugs early keeps the honeydew supply too small to attract ants. Quarantine new plants for 2 to 4 weeks before placing them near your collection.

Debug Plants Before Bringing Them Indoors

Before moving balcony or patio plants inside in fall, give each pot a soapy water soak or check the soil carefully. In Chicago, aim to do this before nighttime temperatures drop below about 50°F, when you would be moving tropical plants in anyway.

Water Consistently

Most tropical houseplants do well when the top 1 to 2 inches dry out, then get a thorough watering. Avoid letting the whole root ball go bone-dry for long stretches, especially for plants near radiators or forced-air heat vents in winter.

Seal Entry Points and Clean Up

Wipe sticky spills from windowsills and counters near plants. Caulk gaps around window frames where trails start. Keep fruit bowls and pet food dishes away from plant shelves, since both draw foraging ants.

Sophia’s tip: Wipe the outside rim and base of each pot with a damp, soapy cloth once a week during spring and summer. This erases the scent trails ants follow and makes it obvious if a new trail starts.

Are Ant Treatments Safe Around Pets and Kids?

Most ant control methods in this guide are low risk when used correctly, but ant baits and some oils need careful placement. Always read the label on any pest product and follow its directions.

Ant bait stations often contain boric acid or other insecticides. Place them where cats, dogs, and children cannot reach, such as behind appliances or inside cabinets along an ant trail. Never set them in a plant pot a pet might dig in.

Insecticidal soap and neem oil are generally considered lower-toxicity options, but let sprayed leaves dry fully before pets can reach the plant. Food-grade diatomaceous earth should be applied lightly so neither people nor pets inhale the dust.

The plant itself matters too. Many common houseplants, including pothos, philodendron, and peace lily, are listed by the ASPCA as toxic to cats and dogs.

If a pet chews a plant or a treatment, contact your veterinarian or the ASPCA Animal Poison Control Center right away.

Your Next Steps

• Confirm the insects are ants by checking for a narrow waist and elbowed antennae, and rule out springtails, fungus gnats, or thrips.
• Inspect stems and leaf undersides for aphids, mealybugs, scale, and sticky honeydew.
• Soak the pot in mild soapy water for 15 to 20 minutes, then rinse with plain water, or repot into fresh mix if the nest is large.
• Treat any honeydew pests with water sprays, alcohol swabs, insecticidal soap, or horticultural oil until they are gone.
• Place ant bait stations along entry trails, out of reach of pets and children.
• Keep a steady watering routine and check plants weekly so new pests and ants are caught early.

Common Questions About Ants in Houseplants