Swiss cheese vine 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 Swiss cheese vine (Monstera adansonii), 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.
Monstera adansonii, the Adanson's monstera, Swiss cheese plant, five holes plant or monkey mask plant, is a species of flowering plant from family Araceae, which is widespread across much of South America and Central America. Monstera adansonii is classified as a hemiepiphyte vine and can be found in tropical forests with hot and high humidity conditions. Wikipedia, CC BY-SA 4.0
Native range: Trop. America (wet tropical). Also sold as Adanson's Monstera, Cheese Plant, Five Hole Plant and Swiss Cheese Plant.
What Swiss cheese vine’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
- H1B — 10–15°CRHS · read 13 September 2026
- Watering
- To prevent leaf spots, keep water off the leaves and give the plant good airflow.NC State Extension · read 13 September 2026In the growing season, water generously and feed monthly with a balanced liquid fertiliser. Give little water in winter.RHS · read 13 September 2026
- Feeding
- Through the growing season, water generously and give a balanced liquid feed each month; in winter water sparingly.RHS · read 13 September 2026
How this shows up on a Swiss cheese vine
Edges of the leaf blades brown while the middle stays sound
On a Swiss cheese vine the browning starts furthest from the midrib and works inward, and it crumbles rather than smears. The centre of each leaf blade is untouched.
Transpiration rises as the air dries, and the tissue furthest from a vein loses first. Penn State Extension notes there is no single humidity figure that suits every indoor plant, which is why this site publishes a range rather than a number.
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 2026Possible causes, likeliest first for a Swiss cheese vine
Most likely cold
Ranked higher for Swiss cheese vine because of what its sources say.
Its RHS hardiness rating puts this plant's cold floor at 10°C or above, so a cold windowsill at night is a strong explanation.
- H1B — 10–15°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 swiss cheese vine.
- Leave damaged leaves until new growth appears, then remove the worst of them.
What would settle it: Where the swiss cheese vine 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
- Loam; 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 too little water
- 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.
Less likely for a Swiss cheese vine, still possible
Questions
- What usually causes brown tips and edges on a Swiss cheese vine?
- For Swiss cheese vine: most likely cold, most likely a build-up of salts in the soil and most likely too little water. Its RHS hardiness rating puts this plant's cold floor at 10°C or above, so a cold windowsill at night is a strong explanation.
- How can I tell which one it is on my Swiss cheese vine?
- Is the browning crisp and dry, or soft and dark? Crisp and dry; Soft and dark.
- What do Swiss cheese vine's sources say about its soil moisture?
- RHS: Moist but well-drained.
- What does this look like on a Swiss cheese vine?
- On a Swiss cheese vine the browning starts furthest from the midrib and works inward, and it crumbles rather than smears. The centre of each leaf blade is untouched. Telling it apart: Whether the soil is dry too. Crisp edges with damp soil point at the air; with dry soil, at the watering.
- Is Swiss cheese vine safe to handle while I check it?
- Its sources list it as toxic to people. Wash your hands after handling the roots or sap, and keep trimmings away from pets.
Other plants that show brown tips and edges
AlocasiaBrown brittle margins with a green centre
Arrowhead plantEdges of the leaf blades brown while the middle stays sound
Dumb caneLeaf tips go crisp and brown
Elephant earCrisp margins that appear in winter
- No photograph yetLacy tree philodendronEdges of the leaf blades brown while the middle stays sound
MonsteraBrown brittle margins with a green centre
Something else wrong with the Swiss cheese vine?
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.