How to Keep Lizards Out of Potted Plants

Lizards sit in pots for shade, moisture and the insects in the soil. Remove those three and they move on. What works, and what harms the plant.

By Salma November 1, 2026 4 min read Save to Pinterest

A garden lizard basking along a bare branch — Photo: breaklessbiker, Pixabay Content License, via Pixabay

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A lizard is in your pot because the pot is cooler, damper and fuller of insects than anything around it. Take those three away and it leaves on its own — and no spray does as much as that.

The short answer

Lizards use potted plants for shade, soil moisture and the insects living in the soil, so the effective approach is removing those: swap loose mulch for coarse grit, water at the base in the morning rather than keeping the surface damp, treat fungus gnats and ants, and raise pots on feet so there is no shaded gap underneath. Move containers away from doorways and walls, and seal actual entry gaps if the concern is lizards indoors. Garden lizards do not damage plants — they eat the pests — and mothballs should never be used.

Replace loose mulch with coarse grit — removes the insect habitat
Water at the base, in the morning; keep the surface dry
Deal with the fungus gnats and ants — that is the food
Raise pots on feet, away from walls and doorways
Never use mothballs. Illegal in many places and toxic

Step 1: take away the insects

This is the part that works, and it is often skipped in favour of sprays.

Fungus gnats — let the top inch dry between waterings; yellow sticky traps for the adults; Bacillus thuringiensis israelensis drench or beneficial nematodes for the larvae
Ants — usually farming aphids on the plant. Clear the aphids and the ants leave
Slugs and woodlice under the pot rim — the grit layer below removes their shelter too

A pot with nothing to eat in it stops being worth visiting within a week or two.

Step 2: change the surface

surface	lizard appeal
Bark mulch, straw, leaf litter	high — damp, shaded, full of invertebrates
Coco coir on top	high
Coarse grit or 10–20 mm pebbles	low — hot, exposed, nothing living in it
Bare compost, kept dry on top	low to moderate

Grit still conserves soil moisture, which is why it is the straight swap rather than a compromise.

Step 3: change how you water

Water at the base, into the soil, not over the foliage
Water in the morning so the surface dries through the day
Let the top inch dry out between waterings for anything that tolerates it
Empty the saucer. A standing tray of water is a drinking station and a mosquito site

Step 4: remove the hiding places

Raise pots on feet so there is no cool shaded gap underneath
Pull containers off the wall — 6 to 12 inches of clear space breaks the run along the house
Space pots apart instead of grouping them into a continuous shaded block
Lift the skirt of trailing plants that drape onto the paving
Clear leaf litter from behind and between the pots

The grouped-pots mistake

A tight cluster of containers is a cool, humid, connected corridor. The same pots spaced a foot apart in sun are three times less attractive, and the plants usually do better for the airflow.

What to try if that is not enough

Aromatic plants among the containers — lemongrass, mint, rosemary. Modest effect, pleasant anyway
Diluted peppermint or eucalyptus oil wiped on pot rims and the paving, refreshed every few days. Keep it off the foliage
A cat or a dog with patio access — the most effective deterrent on this list, if you have one
Reduce the outdoor lighting. Porch and patio lights gather the moths and beetles that bring geckos in after dark; warm-toned or motion-activated lights gather far fewer

What not to do

Mothballs and naphthalene balls. A registered pesticide, illegal to use this way in many places, toxic to people and pets, and harmful to the plant
Glue traps. Indiscriminate and a slow death; they also catch the beneficial insects and sometimes birds
Sealing lizards into a cavity. If something is living in a wall, let it leave before closing the gap
Pepper or chilli powder on the soil. It does not persist, it washes in, and it is unpleasant for pets that nose around the pots

One reframe worth considering

Garden lizards are insectivores. The anole, skink or gecko in your pot is spending its day eating the fungus gnats, ants, spiders and small beetles that would otherwise be your problem. The droppings on the rim are the whole cost.

If what you actually want is them out of the house, the pots are not the route in. Seal the gaps under doors, repair window screens, and close utility penetrations and weep holes — then the pot placement above just reduces the traffic past them.

Common questions

Why do lizards sit in potted plants?

Three reasons, and usually all at once: the soil and foliage are cooler and damper than the surrounding paving, the pot gives cover from birds and cats, and the damp soil is full of the small insects lizards eat. A pot on a hot patio is the best microhabitat available for several metres in every direction, which is why they choose it over the garden bed.

Do lizards damage potted plants?

Almost never. Garden lizards are insectivores — they eat the fungus gnats, ants, spiders and small beetles living in the pot, which is a net benefit to the plant. The droppings are a cosmetic nuisance rather than a problem. If something is eating the leaves it is far more likely to be slugs, caterpillars or, in warmer regions, iguanas, which are a different animal entirely.

What smells keep lizards away?

Strong-smelling plants and oils have some repellent effect close up but do not clear an area reliably. Pots of lemongrass, mint or rosemary placed among the containers, or a diluted peppermint or eucalyptus oil spray on the pot rims refreshed every few days, is the version worth trying. Garlic, pepper and onion are commonly recommended and are weak. Nothing smell-based works as well as removing the shade and the insects.

Should I use naphthalene balls or mothballs to keep lizards out of plants?

No. Mothballs are a registered pesticide and using them scattered in soil or around a patio is both illegal in many places and genuinely hazardous — the vapour is toxic to people and pets, and naphthalene residues harm the plant and the soil life. The advice circulates widely online and should be ignored.

How do I stop lizards getting into the house through plant pots?

Move the pots away from doorways and from the wall, since a pot against the house is a staging post. Then seal the actual entry points: gaps under doors, torn window screens, utility penetrations and weep holes. Lizards come indoors through a gap, not through a pot, so the pot placement reduces the traffic and the sealing is what stops it.

Will removing the mulch help?

Yes, more than most deterrents. A loose mulch layer on top of a pot holds moisture and shelters the insects lizards are hunting. Replacing it with a layer of coarse grit or pebbles keeps the soil moisture in but removes the insect habitat and the hiding place, and it also makes the pot surface hot and exposed, which is exactly what a lizard is avoiding.

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