Short answer
Yes, one araucaria is widely grown indoors: the Norfolk Island pine (Araucaria heterophylla). It is a conifer-like evergreen with symmetrical tiers of soft needles, often sold small in pots and sometimes used as a living tabletop tree at the holidays. Other Araucaria species exist but are mostly large landscape trees, not houseplants.
Which araucaria?
When people search for araucaria as a houseplant, they almost always mean the Norfolk Island pine. Despite the name, it is not a true pine and it is not hardy in cold climates. In its native setting it grows into a very tall tree, so a pot-grown plant will eventually outgrow many rooms.
Indoor or outdoor
It can be both, depending on climate. In mild, frost-free regions it is grown outdoors as a landscape tree. In cooler places it is kept inside, and many people put it on a patio in summer. Move it out only once nights are warm, and bring it in before cold weather. It does not tolerate frost, and sudden changes in sun exposure can scorch it.
Light
Aim for bright light, ideally with some direct sun in a window, though intense midday sun through glass may be too strong. Low light tends to make growth sparse and weak. Because it leans toward the light, turn the pot a quarter turn from time to time to keep the shape even.
Watering and humidity
- Keep the soil evenly moist but not waterlogged, and let the top layer dry slightly between waterings.
- Do not let the root ball dry out fully, and avoid standing water.
- Moderate to higher humidity helps. Heating in winter can dry the air and lead to browning, so keep it away from vents (see winter houseplant care tips).
- Cool to average room temperatures suit it better than hot, dry rooms.
Is araucaria hard to grow?
It has a reputation for being a little fussy. It wants bright light, steady watering and cool, humid air, which can be hard in heated homes. It is usually manageable if you avoid the main problems and keep conditions fairly consistent.
Common problems
- Brown, drooping lower branches: often from dry soil, dry air or low light. Lost lower branches do not grow back.
- Browning tips or needles: dry air or irregular watering.
- Yellowing: can be overwatering or poor drainage.
- Pests: mealybugs, scale and spider mites can appear.
Do not cut the central top leader, as that can permanently change the plant’s shape.
Pet and child safety
Norfolk Island pine is listed by the ASPCA as mildly toxic to cats and dogs, with possible stomach upset if chewed. The needles can also be sharp enough to irritate skin and mouths. Keep the plant away from pets and small children, and contact a veterinarian, doctor or poison helpline if any is eaten.
Related reading
Other tall, tree-like houseplants include Strelitzia nicolai and indoor palms, covered in our indoor palm tree care and yellow leaves guide.