Norfolk Island pine brown leaf tips and edges: causes and what to do
6 results in the diagnosis tree begin with brown tips and edges, 3 of them marked likely when the answers fit. They are ordered here for Norfolk Island pine (Araucaria heterophylla), using what its sources say about humidity, soil moisture, cold tolerance, watering and feeding and one problem recorded for it.
Sources last read 14 September 2026.
Araucaria heterophylla is a species of conifer. As its vernacular name Norfolk Island pine implies, the tree is endemic to Norfolk Island, an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia. Wikipedia, CC BY-SA 4.0
Native range: Norfolk I. (incl. Philip I.) (wet tropical). Also sold as Australian Pine, house pine, Living Christmas Tree, Norfolk Island Araucaria, Norfolk Pine and Polynesian Pine.
What Norfolk Island pine’s sources say that bears on this
- Humidity
- ASHRAE recommends indoor relative humidity between 30% and 60%Penn State Extension · read 13 September 2026
- Soil moisture
- Moist but well-drainedRHS · read 13 September 2026
- Cold tolerance
- H2 — 1–5°CRHS · read 13 September 2026
- Watering
- From spring to autumn water regularly, but avoid overly wet soil. In winter, water sparingly and mist the plant in heated rooms.NC State Extension · read 13 September 2026From March to September, the growing season, water generously; over winter keep the compost just moist.RHS · read 13 September 2026
- Feeding
- From spring to fall, dilute liquid fertilizer can be given every week or every two weeks.NC State Extension · read 13 September 2026Feed every two weeks with a balanced fertiliser while the plant is growing; do not feed in winter.RHS · read 13 September 2026
How this shows up on a Norfolk Island pine
Dry, curled edges on leaves near a heater
Leaves on the side of the Norfolk Island pine nearest a heater or vent brown at the edges while those on the far side stay clean.
Dry air takes water from the leaf surface continuously, and the tissue at the edge is last in the queue for what the roots send up. Penn State Extension notes there is no single humidity figure that suits every indoor plant.
Telling it apart: When it started. Edges that browned as the heating came on point at air; edges that browned through a wet summer do not.
Penn State Extension · read 13 September 2026Possible causes, likeliest first for a Norfolk Island pine
Most likely too little water
Ranked higher because Norfolk Island pine's recorded problems point this way.
- Moist but well-drained RHS · read 13 September 2026
Why: Soil dry two inches down leaves the roots nothing to send up, and the leaf edges are the last tissue in line.
What to try:
- Water thoroughly, until it runs from the drainage hole.Useful: pot with drainage holes
- Check the soil with a finger every few days rather than watering on a fixed day.Useful: moisture meter
What would settle it: Water it thoroughly and watch the next new leaves. If they come in with clean edges under steadier watering, the edges were thirst.
Most likely a build-up of salts in the soil
- Chalk, Loam, Sand; pH Acid or Alkaline or Neutral RHS · read 13 September 2026
Why: Minerals from tap water and fertiliser are left behind as water evaporates, and a white crust on the compost or the pot rim is where they show.
What to try:
- Water slowly and heavily until several times the pot's volume has run through the drainage hole, to wash the salts out.Useful: pot with drainage holes
- Scrape off the top layer of crusted compost and replace it.
What would settle it: Scrape the crust. If it is gritty and dissolves in water it is mineral; if it is fluffy it is mould, which is a different problem.
Most likely cold
- H2 — 1–5°C RHS · read 13 September 2026
Why: Soft, dark patches rather than crisp ones are damaged tissue rather than dried tissue.
What to try:
- Move it away from the glass at night, or keep the curtain on the room side of the norfolk island pine.
- Leave damaged leaves until new growth appears, then remove the worst of them.
What would settle it: Where the norfolk island pine sits at night, and what the glass feels like at that hour. Damage that appeared after one cold night, on the side facing the window, is the pattern.
Less likely for a Norfolk Island pine, still possible
Questions
- What usually causes brown tips and edges on a Norfolk Island pine?
- For Norfolk Island pine: most likely too little water, most likely a build-up of salts in the soil and most likely cold.
- How can I tell which one it is on my Norfolk Island pine?
- Is the browning crisp and dry, or soft and dark? Crisp and dry; Soft and dark.
- What do Norfolk Island pine's sources say about its soil moisture?
- RHS: Moist but well-drained.
- What does this look like on a Norfolk Island pine?
- Leaves on the side of the Norfolk Island pine nearest a heater or vent brown at the edges while those on the far side stay clean. Telling it apart: When it started. Edges that browned as the heating came on point at air; edges that browned through a wet summer do not.
Other plants that show brown tips and edges
AvocadoDry, curled edges on leaves near a heater
Bay laurelBrown tips on the newest leaves first
CalamondinEdges of the leaves brown while the middle stays sound
Chinese banyanLeaf tips go crisp and brown
Coffee plantLeaf tips go crisp and brown
Common figTorn or browned leaves on one side after windy weather
Something else wrong with the Norfolk Island pine?
What this does not cover
This page orders a decision tree's results using a plant's sourced care. It has not seen your plant, its pot or its window, and two problems at once are common: that is the usual reason a confident answer turns out wrong. The questions in the diagnosis tool narrow it further than a list can.