Bay laurel 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 Bay laurel (Laurus nobilis), using what its sources say about humidity, soil moisture and cold tolerance and one problem recorded for it.
Sources last read 14 September 2026.
Laurus nobilis is an aromatic evergreen tree or large shrub with green, glabrous (smooth) leaves. It is in the flowering plant family Lauraceae. Wikipedia, CC BY-SA 4.0
Native range: Medit. (subtropical). Also sold as bay, Bay Leaf Tree, Bay Tree, Grecian Laurel, Laurel and Laurel Tree.
What Bay laurel’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
- H4 — -10 to -5°CRHS · read 13 September 2026
How this shows up on a Bay laurel
Brown tips on the newest leaves first
Leaves on the side of the bay laurel nearest a heater or vent brown at the edges while those on the far side stay clean.
Penn State Extension cites ASHRAE's recommended indoor range of 30% to 60% relative humidity; a heated room in winter drops below it. Air that dry pulls water from the leaf faster than the roots replace it, and the margins are furthest from the supply. That applies while it is grown indoors; its RHS rating of H4 describes a plant that also grows outside, where the air is seldom that dry.
Telling it apart: Whether the damage advances. Dry air marks a leaf and stops; rot keeps going.
Penn State Extension · read 13 September 2026Possible causes, likeliest first for a Bay laurel
Most likely too little water
Ranked higher because Bay laurel'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.
- 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 because Bay laurel'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.
- H4 — -10 to -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 bay laurel.
- Leave damaged leaves until new growth appears, then remove the worst of them.
What would settle it: Where the bay laurel 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, Clay, 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.
Less likely for a Bay laurel, still possible
Questions
- What usually causes brown tips and edges on a Bay laurel?
- For Bay laurel: most likely too little water, most likely cold and most likely 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 Bay laurel?
- Is the browning crisp and dry, or soft and dark? Crisp and dry; Soft and dark.
- What do Bay laurel's sources say about its soil moisture?
- RHS: Well-drained.
- What does this look like on a Bay laurel?
- Leaves on the side of the bay laurel nearest a heater or vent brown at the edges while those on the far side stay clean. Telling it apart: Whether the damage advances. Dry air marks a leaf and stops; rot keeps going.
- Is Bay laurel safe to handle while I check it?
- Its sources list it as toxic to cats and dogs. Wash your hands after handling the roots or sap, and keep trimmings away from pets.
Other plants that show brown tips and edges
AvocadoDry, curled edges on leaves near a heater
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
Crape myrtleCrisp margins that appear in winter
Something else wrong with the Bay laurel?
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.