Pothos

The most-owned houseplant in America, and it earns it: pothos grows in a dim office, in a jar of water, and through weeks of neglect. The one rule is that it is not food - every part fires calcium oxalate needles into the mouth of anything that chews it.

Bright indirect light, ordinary potting mix, and water only when the top two inches are dry. Includes the one-second test that separates pothos from heartleaf philodendron: look at how a new leaf comes out.

Pothos asks for very little. Put it in ordinary potting mix in a pot with drainage holes, in bright indirect light — a few feet back from a window, not on the sill in direct sun, which bleaches the leaves. Water when the top two inches of mix are dry, thoroughly, then empty the saucer. Feed at half strength about once a month from spring to early autumn, and not at all in winter. That is the whole routine.

Light controls how it looks. In a dim corner pothos survives but the gold and cream fade toward plain green and the vines stretch, with long bare stretches between leaves. In good indirect light the variegation holds and the growth stays dense. If you want the huge, deeply lobed leaves that pothos makes in the wild, give it a moss pole to climb: as it goes up, each new leaf comes out bigger than the last. Trailing from a basket it stays in its small juvenile form forever.

Telling pothos from heartleaf philodendron. They are sold side by side and look the same at a glance. The reliable test is how a new leaf emerges: a philodendron unfurls each one out of a papery sheath (a cataphyll) that dries brown and drops, leaving little brown papers under the plant; pothos has no sheath at all — the new leaf simply pushes out of the base of the one before it. Two backups: run a finger along the leaf stalk, and a pothos petiole has a distinct groove down the top where a philodendron's is round; and pothos leaves are thicker, waxier and slightly lopsided at the notch, where heartleaf philodendron leaves are thinner, softer and evenly symmetrical.

Do not plant it outdoors in a frost-free climate. In south Florida, Hawaii and Puerto Rico, escaped pothos climbs live oaks and palms fifty feet up, smothers the canopy and is listed as an invasive plant. Keep it in a pot, and never tip cuttings or old potting mix into a yard or green-waste pile in those places.

Prune it back so it stays full rather than stringy, wear gloves when you cut it, and hang it high enough that the chewable end is out of reach of pets and toddlers.

Most pothos care is pruning. Left alone the vines run long and drop their older leaves, leaving bare stems with a tuft at the end. Cutting a vine back to a leaf joint makes the plant branch from behind the cut, and doing that two or three times a year is the difference between a full plant and a stringy one. Always wear gloves: the cut ends weep sap that stings skin and is properly painful in an eye. Every piece you cut off is a free plant.

Repot every couple of years, or when roots circle the pot and water runs straight through — move up one pot size, no more, in spring or summer. Wipe the leaves occasionally with a damp cloth; a glossy pothos is a healthy one, and dust genuinely reduces the light it can use. Turn the pot a quarter each time you water so it grows evenly.

The care decision that matters most has nothing to do with horticulture: where you hang it. A trailing pothos on a low shelf puts the softest, most chewable growing tip exactly at cat height, and cats find dangling vines irresistible. Wall brackets, high shelves and hanging hooks solve this completely. If you have a cat that grazes plants regardless, keep pothos out of that room — it is not a plant worth an argument you cannot win.

A chewed leaf comes first - call a vet or poison control right away. Beyond that, nearly every pothos problem is too much water or too little light, and the two look different.

A pet or a child has chewed a leaf. Call your veterinarian, an animal poison line, or poison control now — do not wait to see how it develops. Rinse the mouth out with water, take the plant or a piece of it with you if you go in, and follow whatever advice you are given. Go to an emergency clinic or emergency room immediately if drooling will not stop, if there is retching or an inability to swallow, or if there is any change in breathing or in the voice. The pain is instant and usually settles within a few hours, but swelling is what makes the rare case serious.

Yellow leaves, starting at the bottom, mix always damp. Overwatering, and the beginning of root rot. Let the mix dry properly, water less, and check that the pot actually drains and is not sitting in a full saucer.

Black mushy stems at the soil line, plant collapsing. Root rot has arrived. Tip it out, cut away every soft brown root, and either repot the healthy remainder in fresh dry mix or, more reliably, take clean cuttings from the good vines and start again.

Long bare vines, small leaves, variegation gone green. Too little light. Move it somewhere brighter (still out of direct sun) and cut the leggy vines back hard — it regrows dense in the better position.

Brown crispy tips and edges. Dry indoor air, fertilizer salts built up in the pot, or letting it go bone dry repeatedly. Flush the pot through with plenty of water, ease off feeding, and water a little sooner.

White cottony blobs in the leaf joints, or fine webbing and speckled leaves. Mealybugs and spider mites, the two pests that find indoor plants. Both are dealt with the same way — see Threats.

Nothing is happening. If it is November, that is correct. Pothos nearly stops in winter and starts again in March.

The easiest plant in the house to multiply: cut below a node, put it in water or straight into mix, and pot it up before the water roots get long.

Pothos roots so easily it is how most people get theirs. Cut a vine into pieces so that each piece has at least one node — the slightly swollen joint where a leaf meets the stem, usually with a small brown nub beside it. That nub is an aerial root, and it is where the new roots come from; a cutting without a node will never root, however pretty the leaf. Cut about half an inch below the node, and remove the lowest leaf so it does not sit in water.

In water: stand the cuttings in a glass so the nodes are covered and the leaves are not, somewhere bright, and change the water weekly. Roots appear in one to three weeks. Pot them up when the roots are one to two inches long — this matters. Water roots are thin and brittle and adapt badly to soil; the longer you leave them, the harder the transition, and a jar left for months often sulks for weeks after potting.

In mix: push three or four cuttings around the edge of a small pot of damp potting mix, keep it lightly moist, and they root just as well with no transition to make. This is the better method if you want a full pot quickly.

Wear gloves for the cutting, and keep the trimmings off kitchen counters and out of reach of pets while you work. And if you live somewhere frost-free, put spent cuttings in the trash — not the compost, not the yard, not the green-waste bin.

A houseplant in every US climate. Outdoors it survives only in zones 10b and warmer - and that is exactly where it must not be planted, because it climbs and smothers trees there.

Indoors, climate is not really a factor: pothos wants what a heated house already provides — 60 to 85°F, out of drafts, and away from freezing windowpanes in January. It sulks below about 55°F and is killed outright by frost. Dry winter air gives it brown tips but does not threaten it; a room humidifier or a pebble tray helps if you care about perfect leaf edges.

Outdoors it is hardy only in zone 10b and warmer — the southern tip of Florida, Hawaii, coastal Puerto Rico, the Gulf's warmest edge. And that is precisely where it should never be planted. Escaped pothos there does something most people who own one indoors would not recognise: it climbs. Given a live oak or a palm it goes up fifty feet or more, and as it climbs the leaves get bigger and split into deep pinnate lobes until they are two or three feet across — the same species, wearing its adult form. Whole canopies get smothered. Florida lists it as an invasive plant, and it is a recognised problem in Hawaii, Puerto Rico, Sri Lanka and much of the Pacific.

The practical rule for warm-climate gardeners: keep it in a pot, keep the pot off the ground where the vines can root into a bed, and put trimmings and old mix in the trash. A single node that lands in warm damp ground is a new plant.

One wild island population became, by cuttings alone, the most propagated houseplant on earth - and it almost never flowers, so nearly every pothos alive is a clone of a clone.

Pothos is native to a single small place: Mo'orea, in the Society Islands of French Polynesia. From there the horticultural trade carried it across the tropics in the nineteenth and twentieth centuries, first as a curiosity and then, once central heating made tropical foliage plants viable in northern homes, as a mass-market houseplant.

What it spread by is worth knowing, because it explains the plant. Cultivated pothos almost never flowers — it has essentially lost the ability outside of laboratory treatment with plant hormones — so it has been moved around the world entirely by cuttings. Nearly every pothos in every house is a clone of a clone of a clone, back to a handful of original collections. That is also why the named varieties are so stable and why a piece from a friend's plant is genetically the same plant.

Its taxonomy has wandered as much as it has: it has been filed under Pothos, Scindapsus, Raphidophora and finally Epipremnum, which is why the common name still says pothos while the label says Epipremnum, and why old books disagree with new ones.

The last piece of pothos history is a myth worth retiring. In 1989 NASA published a study testing whether houseplants removed volatile chemicals from air, using plants sealed in small chambers; pothos was one of them. The finding was real and the marketing that followed was not. A 2019 review reworked the numbers against how much air a real room exchanges and found that you would need something on the order of a hundred plants per square metre of floor to match simply opening a window. Pothos is a wonderful plant. It is not an air filter.