Philodendron Birkin

Check your light →

Filtered light, like a window behind a sheer, keeps its cream pinstripes crisp against the deep green. In medium light it carries on, though leaves may come in smaller with fainter stripes.

Its pinstripes are the gauge. NC State ties lost variegation, leggy stems, and small leaves to too little light, so a clump of plain, stretched leaves is asking for more. Scorched patches mean direct sun is reaching it.

An east-facing window may come closest to what it wants, or a few feet back from a south or west one, where a curtain softens the afternoon.

In a Chicago winter it may move nearer the glass for the weaker sun, as long as no cold draft reaches it (NC State warns against drafts and cold).

Light is what it spends on its looks: in a middling room it carries on, just in plainer clothes.

About every 7-10 days in summer, stretching to 10-14 in winter. Overwatering is what it won’t forgive: yellowing leaves first, then root rot under those thick, upright stems.

Air matters as much as the watering can. It likes humidity at 50-60% and a room between 65 and 85°F (NC State), so a bathroom with a window may suit it well.

If the tips of its broad, glossy leaves begin to brown and that bothers you, a humidifier or a pebble tray beside the pot can help; NC State links brown tips to dry air. It’ll grow on regardless.

With its leaves gathered in a tight crown, aim the water at the soil around the stems rather than over the top. NC State notes leaf spots can follow when leaves get wet during watering.

Gone for a while? Two weeks is fine if you soak it the day you leave.

A dense clump of thick, upright stems, 1-3 feet tall and about as wide, and slow to get there. Sized for a desk, a side table, or a shelf with headroom for those stems to stand tall.

It’s what growers call self-⁠heading: instead of vining, it grows from very short stems with its leaves gathered in a tight crown (NC State), so the clump stays put with nothing to climb.

NC State lists its growth as slow, which in practice means one new striped leaf unfurling from the center at a time. Nursery plants often come small, so a 3-foot spread may take years.

That striped crown reads best from above and from every side: the middle of a shared desk, a kitchen island, an end table by the sofa.

A chewed leaf may sting and swell the mouth of a dog, cat, or child and bring on drooling; a pet may also vomit. It usually passes, and NC State rates the risk low.

Some sources say kidney or nerve effects are possible, mostly in cats, though that isn’t the usual course.

The sting comes from calcium-oxalate crystals packed into its leaves and stems. Chewed, they can leave the lips, tongue, and throat sore and swollen, and a pet may drool, vomit, or find swallowing hard for a while. It usually settles on its own (NC State rates the overall risk low). The sap can irritate skin, so gloves may help when you trim or repot.

If symptoms don’t settle, or anything worries you, Poison Control can help with a child. For a pet, your vet or the ASPCA Animal Poison Control Center can help (a fee may apply).

Because it stays compact and upright rather than trailing, it’s easy to lift out of reach: a high shelf, the top of a bookcase, a desk the cat doesn’t patrol. With a determined chewer at home, a room behind a closed door may help.

1. ASPCA: mild for dogs.
2. Merck Veterinary Manual: toxic for dogs (rates the whole genus).
3. Pet Poison Helpline: mild for dogs (rates the whole genus).
4. ASPCA: mild for cats.
5. Merck Veterinary Manual: toxic for cats (rates the whole genus).
6. Pet Poison Helpline: mild for cats (rates the whole genus).
7. Poison Control: mild for kids.

Cats and dogs: Most of the leading sources agree.

Kids: Poison Control lists it; the effect is mouth pain from oxalate crystals.

Happiest at 65-85°F, and it shouldn’t sit below 59°F. Keep it away from cold glass in winter. It likes 50-60% humidity and gets by at 35%.

Temperature

65-85°F

Humidity

50-60%

Spider mites and thrips favor the leaf undersides, while mealybugs tuck into leaf axils and the base of each leaf stalk. Scale and aphids come by less often, on stems, veins, and the growing tip. Look at new leaves as they unfurl.

• Spider mites
• Mealybugs
• Banded greenhouse thrips
• Scale insects
• Aphids

Not many. Mealybugs, scale, aphids, and spider mites turn up now and then, and root rot if the soil stays soggy.

Mealybugs look like tufts of white cotton where the leaves meet the stems; scale looks like small brown bumps stuck to the stems and the undersides of the leaves. Wipe both off with a cotton swab dipped in rubbing alcohol (a fingernail lifts scale), then check again next week.

Aphids bunch on a new leaf as it unfurls and leave it sticky. Rinse them off in the shower.

Spider mites leave a faded, speckled look and fine webbing, mostly in warm, dry air. Rinse the whole plant, undersides of the leaves included; if they come back, spray it with insecticidal soap.

Root rot and leaf spot are its diseases. If it wilts while the soil is wet, let it dry out, empty the saucer and water less often. Cut off spotted leaves and keep water off the rest.

Turn the pot every couple of weeks for even growth, and feed monthly from April to September. Wipe or rinse the leaves 4 times a year, and snip any all-green or red shoots as you spot them. Repot in spring every 2-3 years.

• Feed6× a year
• Rotate26× a year
• Clean leaves4× a year
• Prune1× a year

An ordinary potting mix that drains fast, in a pot with a drainage hole.

Repot when it gets crowded, or when the soil starts drying out much faster than it used to: one pot size up, in spring or summer.

Feed it lightly: a balanced houseplant fertilizer at half strength once or twice a month in spring and summer, and none in winter.

Deep green leaves carry fine cream pinstripes, and each new one may come in streakier or plainer than the last. The surface is glossy and waxy, and the stems stand close enough to partly hide the soil.