Norfolk Island Pine (Araucaria heterophylla)

Norfolk Island Pine

Araucaria heterophylla
Care level: Moderate

Despite the name and its pine-like silhouette, Araucaria heterophylla isn't a true pine at all but a member of the ancient Araucariaceae family, whose relatives date back to the age of dinosaurs. In the wild it grows only on tiny, isolated Norfolk Island in the South Pacific, which is why it's a subtropical plant sold everywhere as a "living Christmas tree" despite having zero frost tolerance.

I have this plant

Information

Varieties and related species
Standard formCompactaGolden form

Light

Bright indirect light with a little gentle morning sun; rotate regularly since it grows toward the light source.

Water

Keep soil lightly moist, watering when the top few centimeters feel dry, roughly every 1-2 weeks.

Humidity

Prefers higher humidity than typical living rooms; mist or use a pebble tray, especially near heaters.

Soil

Well-draining, slightly acidic potting mix with good organic content.

Temperature

A bright, cool room at 13-18°C suits it best. It does not survive frost.

Size

About 2.7m tall indoors, with time.

Best position

  • east / south-east-facing windowanywhere up to about 2 m from the window
  • north / north-east / north-west-facing windowanywhere up to about 1 m from the window
  • south / west-facing windowabout 1 m from the window or further back

Watch for strong direct sun at south / west windows.

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south-eastworks wellworks wellworks welltoo darktoo dark
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works well just about too dark too much direct sun

A rough guide based on window direction and typical daylight through the year. Window size, curtains and whatever stands outside matter just as much.

Non-toxic to pets

Considered non-toxic to cats and dogs.

Source: ASPCA

Common mistake

Because it looks like a hardy outdoor pine, people often plant it outside in temperate climates or leave it in a cold spot after the holidays; a single hard frost can kill it, since it's genuinely a tender houseplant that needs warmth year-round.

Care by Season

Spring

Resume light feeding and regular watering as growth restarts.

Summer

Keep humidity up and water consistently; avoid letting the pot dry out fully.

Autumn

Reduce feeding and slightly ease off watering as growth slows.

Winter

Keep away from heating vents and cold drafts, which cause needle drop; maintain humidity and steady, moderate watering.

Growing & Maintenance

Soil and pot

A fertile, porous, slightly acidic potting mix with sand and peat, in a pot with drainage holes.

Fertilising

A dilute liquid feed every week or two from spring to autumn.

Pruning

Do not cut the top: the tree does not replace its leader and loses its shape. Only remove dead lower branches.

Propagation

From seed.

Pests & Diseases

Common problems

Lower branches turning brown and dropping

Most likely cause: Dry air near heating, soggy compost or several years in very low light.
What to do: Raise the humidity, let the compost dry slightly between waterings and give the tree more light. Lost branches do not grow back.

Needles dropping

Most likely cause: A heating vent or a cold draught.
What to do: Move it away from both.

Leaning to one side

Most likely cause: It grows toward the light.
What to do: Turn the pot regularly.

Yellowish needles

Most likely cause: Too much hot sun.
What to do: Give it light shade in the afternoon.

Soft, drooping growth

Most likely cause: Too little light.
What to do: Move it to the brightest spot you have.

Pests & Diseases

Spider mites

Signs: Fine webbing between branches and dry, dropping needles, worsened by heater-dried air
Treatment: Raise humidity, rinse foliage, and apply insecticidal soap if needed. Check the undersides of the leaves and the crevices where the leaf stem meets the main stalk.

Scale insects

Signs: Small brown bumps on stems and branches with sticky residue
Treatment: Scrape off gently and treat with horticultural oil.

Root rot

Signs: Browning, dropping lower branches with soggy soil
Treatment: Let soil dry out more between waterings and improve drainage; trim affected roots if repotting.

FAQ

Can I plant my Norfolk Island Pine outside after Christmas?

Only if you live somewhere frost-free year-round; despite its pine-tree look, it's tropical/subtropical and will not survive freezing temperatures, so in most climates it needs to stay indoors as a permanent houseplant.

Why are the lower branches on my Norfolk Island Pine turning brown and dropping?

This is most often caused by low humidity, especially near heating vents, or by soggy soil from overwatering; raise humidity, keep it away from drafts and heaters, and let the top of the soil dry slightly between waterings.

Is the Norfolk Island Pine safe for cats and dogs?

Yes, the Norfolk Island Pine is not toxic to cats or dogs.

How often should I water a Norfolk Island Pine?

Roughly every 1-2 weeks, when the top few centimetres of compost feel dry. Water regularly from spring to autumn, without making the compost soggy, and sparingly in winter.

How big does a Norfolk Island Pine get indoors?

About 2.7m with time. Outdoors in a frost-free climate it is a tree of 18m and more.

Can I prune a Norfolk Island Pine?

Only to remove dead lower branches. Never cut the top, because the tree does not grow a new leader and its tiered shape is lost for good.

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