Tree · Araucariaceae
Norfolk Island Pine
Araucaria heterophylla
Keep the light bright, the air cool, and the watering steady, and this living conifer will happily hold onto its tidy tiers the whole year through.
Bright indirect
55–64°F · 13–18°C
USDA 9–11
3–6 ft · 0.9–1.8 m
Overview
The Norfolk Island pine is a living conifer that brings that feathery, tiered evergreen look right into the house. It's from Norfolk Island out in the South Pacific, where it shoots up into a towering tree, but pop it in a pot and it stays a manageable 3 to 6 feet (about 91 to 183 cm) tall. Plenty of folks keep one as a small, living alternative to a cut Christmas tree.
Take a closer look, though, and it turns out it isn't a pine at all. It belongs to the genus Araucaria, an ancient Southern Hemisphere conifer family that's way older than the true pines it's mimicking. The soft, needle-like branches grow in neat, even whorls around one upright leader, and honestly that orderly, layered shape is the whole reason to bother with one.
It's happiest in a cool, bright spot with a steady hand on the watering can. The one thing to know? It grows slowly and won't replace anything it loses, so if a branch browns and drops, or the leader gets cut, that gap is there for good. Get the light, the humidity, and the watering sorted out, and it'll hold its shape for years.
Care
The short version: it wants bright indirect light, cool rooms around 55°F to 64°F (13°C to 18°C), and soil that's kept evenly moist in the growing season but drier over winter. Give it some humidity, don't ever let it sit in water, and leave that central leader well alone.
Light
Give it bright, indirect light, and a spot near a sunny window where the direct rays get softened is just about perfect. It'll take a bit of full sun, but a little afternoon shade keeps the foliage from bleaching, and a dim corner? That slowly thins out the lower branches.
Water
Keep the soil evenly moist from spring through autumn, then ease right off through winter. Let the top of the soil start to dry between drinks, and never leave the pot sitting in water. Go by the feel of the soil and how firm the foliage is rather than sticking to some fixed schedule.
Soil
Plant it in a fertile, porous mix with lots of sand and peat, kept a touch acidic. What really matters here is sharp drainage, because this conifer will rot if the soil stays soggy.
Temperature
Cool rooms suit it best, ideally somewhere between 55°F and 64°F (13°C to 18°C). Keep it well away from heat vents, and don't let it drop below 50°F (10°C) once winter rolls in.
Humidity
Average household humidity does the job, but dry, heated air is its main enemy indoors. In a heated room, mist the foliage or park the pot near other plants to lift the moisture around it.
Feeding
Feed it a dilute liquid fertilizer through spring and summer, roughly every week or two. Skip it over winter, when the plant's barely growing and hasn't got much use for it anyway.
Pruning
This is one you mostly just leave be. Never top it or cut the central leader, because that wrecks the whorled shape and it won't grow a new one. Stick to pulling off the dead or damaged lower branches and that's it.
Repotting
Only repot it every 2 to 4 years, once it's clearly potbound. It actually likes being a little rootbound and hates getting disturbed, so there's no rush to bump it up a size.
Size & spacing
Indoors it gets to 3 to 6 feet (91 to 183 cm) tall with a spread of around 2 to 3 feet (61 to 91 cm). Give it room on every side so the tiers can spread out evenly and stay nice and symmetrical.
Troubleshooting
Most of the trouble with a Norfolk Island pine comes back to the air and the watering, and it usually shows up first on the lower branches. Catch those early signs and you can step in before a bare patch sticks around for good. Find what matches below, then get on it while there's still time to help.
Droopy plant with soggy soil and mushy roots
When a plant wilts but the soil's still wet, that's usually root rot from too much water or a pot that won't drain, and sometimes the mushroom root rot fungus is in the mix too. Back off the watering right away, tip out the saucer so it's never sitting in water, and if the roots have already gone soft and dark, repot into something airy. Don't wait around on this one, because caught too late it can finish the plant off.
Fix:
- Reduce watering frequency
- Ensure pot drains freely and empty saucers
- Repot into porous, well-drained mix if rot is present
Sticky black gunk or fine webbing on the foliage
If the foliage feels sticky and there's a black film on it, that's scale insects, and the honeydew they leave behind is what the sooty mold is feeding on. But if you're seeing fine speckling and little webs instead, you've got spider mites, which really take off in hot, dry rooms. Wipe everything down, hit it with horticultural oil or insecticidal soap, and bump up the humidity so the mites don't just move back in.
Fix:
- Wipe or wash foliage
- Treat with horticultural oil or insecticidal soap
- Increase humidity to discourage mites
Bottom branches browning out and dropping off
Seeing bare tiers down low? That's almost always dry, heated indoor air talking, and it gets worse once a plant has spent two or three years tucked in a dim corner. Shift it to a bright, cool room and give the air around it a bit more moisture. Here's the catch, though: a tier that drops won't grow back, so it pays to jump on this early while the shape is still full.
Fix:
- Move to a bright, cool room with indirect light
- Mist foliage or raise ambient humidity in heated rooms
- Keep soil evenly moist but not waterlogged
Toxicity
Honestly, this one's a mild concern at most. The ASPCA and NC State both call it non-toxic to cats, dogs, and horses, though the sap can still hand a pet that chews it an upset stomach or a little skin irritation. People are basically fine around it, so really the only job is keeping a determined chewer away from the foliage.
Toxic to
Cats · Dogs
Safe for
People · Horses · Rabbits · Livestock · Birds
Cats Mild
If a cat chews on the needle-like foliage, it might drool, throw up, or turn its nose up at dinner for a bit, and the sap can leave the mouth or skin a little sore. It's usually nothing serious and clears up by itself, but it's smart to keep a young plant somewhere a determined chewer can't get to.
Dogs Mild
A dog that nibbles the branches can end up with a bit of an upset stomach, maybe some drooling or vomiting, and the sticky sap might irritate the skin around its muzzle. None of it's dangerous in the amounts a pet would actually eat, but it's still worth nudging a curious dog away from the lower tiers.
Horses None
Horses? Both the ASPCA and NC State Extension call it non-toxic, and honestly a houseplant like this almost never ends up near one.
Rabbits Safe
Rabbits are fine too, since there's no toxin on record for them, and that stiff, resinous foliage isn't exactly a treat they'd go for.
Livestock Safe
Livestock aren't at risk either, because nothing on it counts as a poison, and a plant in a pot stays well away from anything that grazes.
Birds Safe
Pet birds don't really react to the leaves, though that resin can gum up their feathers a bit if one perches and starts pecking.
People Safe
It's basically safe to have around people, and there's nothing on it you'd grow to eat anyway. The sap can leave sensitive skin a little itchy, so it's worth rinsing your hands after you prune.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
United Kingdom
Animal PoisonLine: 01202 509000 (fee applies)
Australia
Animal Poisons Helpline: 1300 869 738
Varieties
There aren't any named cultivars to pick between here, but there's one old botanical name that just keeps tagging along with this plant through the houseplant trade.
Araucaria excelsa (former name)
You'll still see this older synonym pop up on plant labels and around the houseplant trade, but don't let it throw you, because it's just the same plant that's sold today as Araucaria heterophylla.
How to propagate
A Norfolk Island pine is a whole lot easier to buy than it is to grow more of, and the shape a new one takes comes down entirely to which bit of growth you start from.
SeedModerate
Sow when fresh in moist, sandy, peaty soil · Several weeks to germinate; slow to develop into a sizeable plant
Seed's really the main way to grow one of these from scratch. Sow it fresh into a moist, sandy, peaty mix, and be ready to wait, because it takes several weeks just to sprout and a good bit longer to turn into anything sizeable. So what's the payoff for hanging in there? A plant with the proper upright leader and those even, whorled tiers the species is famous for.
Stem cuttingsDemanding
From terminal (leader) growth · Slow and unreliable
Cuttings are trickier, and they only really work if you take them from the upright leader tip, and even then rooting is slow and unreliable. Grab a piece off a side branch and it'll root fine, but it always grows sideways into a lopsided, distorted plant, so it never quite stands in for a proper seedling.
Myths
The Norfolk Island pine is a true pine.
Sure, the branches look like needles, but this one actually lands in the genus Araucaria, family Araucariaceae, and not in Pinus at all. It's an ancient Southern Hemisphere conifer from Norfolk Island, way older than the true pines it's doing an impression of. The pine in the name is a look-alike, not family.
That Norfolk Island pine in the corner is a real poisoning hazard for cats and dogs.
You can breathe easy here, because the ASPCA lists Araucaria heterophylla, over under its 'Australian Pine' entry, as non-toxic to cats, dogs, and horses, and NC State backs that up, so that scary toxic label floating around is just a misconception. In real life the risk is mild, since a pet that chews the foliage might get a bit of an upset stomach or some skin irritation from the sap, and that's about it.