Chusan palm 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 Chusan palm (Trachycarpus fortunei), using what its sources say about humidity, soil moisture and cold tolerance and 2 problems recorded for it.
Sources last read 14 September 2026.
Trachycarpus fortunei, also known as the Chusan palm, Chinese windmill palm, hemp palm, or simply windmill palm, is a species of hardy evergreen palm tree in the family Arecaceae, native to parts of China, Japan, Myanmar and India. Wikipedia, CC BY-SA 4.0
Native range: SC. China to N. Myanmar (temperate). Also sold as Chinese Fan Palm, Chinese windmill palm, Fortune's Palm, hemp palm, Nepalese fan palm and windmill palm.
What Chusan palm’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
- Well-drainedRHS · read 13 September 2026
- Cold tolerance
- H5 — -15 to -10°CRHS · read 13 September 2026
How this shows up on a Chusan palm
Edges of the fronds brown while the middle stays sound
The Chusan palm browns at the very tips first, and the brown line creeps back along the edges over weeks. The tissue is dry and brittle, not soft.
Penn State Extension notes that most indoor plants benefit from more humidity than a home heated in winter provides. The leaf edge, furthest from the veins, is where the shortfall shows. That applies while it is grown indoors; its RHS rating of H5 describes a plant that also grows outside, where the air is seldom that dry.
Telling it apart: Whether the soil is dry too. Crisp edges with damp soil point at the air; with dry soil, at the watering.
Penn State Extension · read 13 September 2026Split, browned fronds on the side of the plant facing the wind
The Chusan palm looks battered rather than sick. Fronds are nicked and browned at the edges, and the damage is heaviest on the most exposed side.
RHS lists it for a sheltered position. Wind pulls water from the leaf faster than roots replace it, and it bruises the tissue it strikes, so a plant grown out in the open is marked on its windward side.
Telling it apart: Whether it followed stormy weather. Damage that appeared overnight after wind is weather; damage that develops over weeks is something else.
RHS · read 13 September 2026Possible causes, likeliest first for a Chusan palm
Most likely too little water
Ranked higher because Chusan palm's recorded problems point this way.
Its source describes well-drained soil for this plant, so soil that dries between waterings is expected. The concern is soil left dry long enough for the plant to go limp or wrinkle.
- Edges of the fronds brown while the middle stays sound Penn State Extension
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: moisture meter
- 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 cold
Ranked higher because Chusan palm's recorded problems point this way.
Its RHS hardiness rating puts this plant's cold floor at or below freezing, so cold damage in a heated room is unlikely. A frost outdoors, or a night in a cold car, is another matter.
- Edges of the fronds brown while the middle stays sound Penn State Extension
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 chusan palm.
- Leave damaged leaves until new growth appears, then remove the worst of them.
What would settle it: Where the chusan palm 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.
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: Salts from the potting mix, fertilizer and hard water rise to the surface as it dries and are left behind as a white or tan crust, according to Colorado State University Extension.
What to try:
- Water slowly from the top until several times the pot's volume has run through the drainage hole, to wash the salts out.Useful: moisture meter
- Scrape off the top layer of crusted potting mix and replace it.
What would settle it: Where else it sits. A salt crust also forms on the pot rim, on the outside of clay pots and around the drainage holes; a fungal growth stays on the moist surface of the mix.
Less likely for a Chusan palm, still possible
Questions
- What usually causes brown tips and edges on a Chusan palm?
- For Chusan palm: too little water, cold and a build-up of salts in the soil. Its source describes well-drained soil for this plant, so soil that dries between waterings is expected. The concern is soil left dry long enough for the plant to go limp or wrinkle.
- How can I tell which one it is on my Chusan palm?
- Is the browning crisp and dry, or soft and dark? Crisp and dry; Soft and dark.
- What do Chusan palm's sources say about its soil moisture?
- RHS: Well-drained.
- What does this look like on a Chusan palm?
- The Chusan palm browns at the very tips first, and the brown line creeps back along the edges over weeks. The tissue is dry and brittle, not soft. Telling it apart: Whether the soil is dry too. Crisp edges with damp soil point at the air; with dry soil, at the watering.
Other plants that show brown tips and edges
Something else wrong with the Chusan palm?
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.