Lipstick plant 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 Lipstick plant (Aeschynanthus radicans), 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.
Aeschynanthus radicans is a vine-like plant in the family Gesneriaceae. It is native to the humid tropics of the Malay Peninsula south to Java. Wikipedia, CC BY-SA 4.0
Native range: S. Myanmar to W. & C. Malesia (wet tropical). Also sold as Basket Vine and Lipstick Vine.
What Lipstick plant’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
- H1A — warmer than 15°CRHS · read 13 September 2026
- Watering
- Water often, but make sure the potting soil drains well.NC State Extension · read 13 September 2026Between mid spring and late summer, water generously and feed monthly with a general liquid feed at half strength. Give little water in winter.RHS · read 13 September 2026
- Feeding
- In the growing season, a dilute liquid fertilizer (an orchid one, for example) promotes leaves and flowers.NC State Extension · read 13 September 2026Between mid spring and late summer, water generously and give a general liquid feed at half strength each month.RHS · read 13 September 2026
How this shows up on a Lipstick plant
Dry, curled edges on leaves near a heater
Leaves on the side of the lipstick plant 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: Look at the pot rim and the soil surface. A white crust points at a build-up from tap water or feed rather than at the air. Penn State also reports misting and pebble trays do little to the humidity around a plant.
Penn State Extension · read 13 September 2026Possible causes, likeliest first for a Lipstick plant
Most likely too little water
Ranked higher because Lipstick plant'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 cold
Ranked higher for Lipstick plant because of what its sources say.
Its RHS hardiness rating puts this plant's cold floor at 15°C or above, so a cold windowsill at night is a strong explanation.
- H1A — warmer than 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 lipstick plant.
- Leave damaged leaves until new growth appears, then remove the worst of them.
What would settle it: Where the lipstick plant 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.
Less likely for a Lipstick plant, still possible
Questions
- What usually causes brown tips and edges on a Lipstick plant?
- For Lipstick plant: most likely too little water, most likely cold and most likely a build-up of salts in the soil.
- How can I tell which one it is on my Lipstick plant?
- Is the browning crisp and dry, or soft and dark? Crisp and dry; Soft and dark.
- What do Lipstick plant's sources say about its soil moisture?
- RHS: Moist but well-drained.
- What does this look like on a Lipstick plant?
- Leaves on the side of the lipstick plant nearest a heater or vent brown at the edges while those on the far side stay clean. Telling it apart: Look at the pot rim and the soil surface. A white crust points at a build-up from tap water or feed rather than at the air. Penn State also reports misting and pebble trays do little to the humidity around a plant.
Other plants that show brown tips and edges
African violetBrown tips on the newest leaves first
Goldfish plantCrisp margins that appear in winter
Barberton daisyEdges of the leaves brown while the middle stays sound
Bearded irisLeaf tips go crisp and brown
Bigleaf hydrangeaDry, bruised edges after a cold, windy spell
Bird of paradiseCrisp margins that appear in winter
Something else wrong with the Lipstick plant?
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.