Norfolk Island Pine
Araucaria heterophylla · Living Christmas Tree
It is sold by the thousand every December as a miniature Christmas tree, but it is not a true pine at all. It is an ancient Gondwanan conifer, native to a single tiny island in the South Pacific, where it grows into a forest giant.
Family
Araucariaceae
Origin
Norfolk Island
In the wild
A giant to 65 m
Indoors
0.9–1.8 m
Growth
Slow indoors
With pets
Non-toxic
Where it's from
Norfolk Island, South Pacific
A single island
Endemic to Norfolk Island in the South Pacific, with a few stands on neighbouring islets.
A giant in the wild
On its home cliffs it reaches around 65 m, with a trunk up to about 2 m across.
Outdoors: zones 9b–11
Frost-sensitive. A coastal landscape tree in the warm subtropics, a houseplant everywhere colder.
The Christmas tree that isn't a pine
It is sold as a festive little fir, but it belongs to Araucariaceae, an ancient southern-hemisphere conifer family, not the true pines of Pinaceae. Its name heterophylla means "different leaves": soft awl-shaped needles when young that turn stiff and scale-like with age.
An ancient lineage
A Gondwanan conifer family far older than the true pines it gets mistaken for.
Built in tiers
Branches grow in strikingly symmetrical whorls, often five to a level, forming a near-perfect plane.
Lost branches stay lost
Drop a lower branch to dry air or bad watering and it never grows back.
How to keep it
LightBright light
Six or more hours of bright or indirect light keeps it compact and symmetrical. Rotate it or it leans toward the window.
WaterKeep lightly moist
Evenly, lightly moist in the growing season, less in winter. Both soggy and bone-dry soil cause needle drop.
HumidityModerate, 40–60%Dry, heated air browns the foliage and drops branches. Keep it away from radiators.
Temperature13–18°CPrefers cool to average rooms, cooler at night. Keep it frost-free.
SoilPorous, slightly acidicA sandy, peaty, well-drained mix that holds some moisture but never stays wet.
FeedingLight, in summerA light feed during the growing season only.
DifficultyEasy to moderateSimple while young; harder long-term as it resents dry air and being moved.
With petsNon-toxicListed non-toxic to dogs, cats and horses by the ASPCA. Non-toxic does not mean edible.
PropagationSeed, mostlyGrown from seed. Only a cutting from the central tip grows straight, and taking it ruins the parent's shape.
RepottingEvery 2–3 yearsInfrequent. It tolerates being a little pot-bound.
What the data says
What it costs
A seasonal commodity, stacked by the thousand every December. There is no collector premium.
$10–80
Small tabletop plants run cheapest; larger floor specimens cost more. Variegated forms are scarce but not a hyped market.
IUCN · Vulnerable
In the wild
One of the rare houseplants that is genuinely at risk in nature even as it floods supermarkets.
Assessed Vulnerable in 2019. Its entire natural range is one tiny island, and the assessment warns it could quickly become Critically Endangered if conservation stopped. It has been wiped out on Nepean Island and largely lost from Phillip Island. Common in our homes, at risk in its only home in the wild.
When it sulks
Dropping branchesThe number one complaint: dry air, bad watering or too little light. Lost branches do not regrow.
Brown, crispy tipsDry, heated indoor air. Raise humidity and move it from the radiator.
Yellowing and rotOverwatering and soggy roots.
Leaning, one-sided growthReaching for the light. Rotate the pot regularly.
PestsSpider mites, scale and mealybugs. Check and treat early.
Varieties & company
The varieties
Straight speciesAlbospica
Pairs with · keep apart from
CalatheaFernsPeace LilyCactiSucculentsSnake Plant
A new plant, every week.
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