Why Is My Rosemary Turning Brown?
Brown rosemary often comes from poor drainage, root stress, winter injury, or old woody growth. Find out how to tell recoverable damage from a plant in decline.
Quick diagnosis
Rosemary turns brown when roots stay too wet, when older woody growth dies back, or when weather stress damages the plant. Because rosemary prefers lean, sharp-draining conditions, over-care is often a bigger problem than neglect.
What brown rosemary usually means
Browning that begins inside the plant or near the base often points to old growth and poor airflow. Browning that spreads after wet weather or frequent watering usually points to root stress. Tip browning after cold or wind can be environmental damage instead.
| Symptom | Likely cause |
|---|---|
| Brown from the center outward | Age and dense woody growth |
| Brown with wet soil | Poor drainage or overwatering |
| Brown tips after cold weather | Cold injury or wind burn |
| Patchy decline in a pot | Root crowding or exhausted potting mix |
Main causes
1. Poor drainage
Rosemary hates sitting in soggy potting mix. If the pot drains slowly or the soil stays wet, roots weaken and stems begin to brown.
2. Old woody growth
Older interior stems naturally thin out over time, especially if the plant has not been lightly trimmed. Regular light pruning keeps new leafy growth coming.
3. Winter or weather damage
Cold snaps, drying winds, and winter wet can damage foliage and stems, especially in containers.
How to fix it
- Move rosemary to the sunniest, airiest position you have.
- Repot in a gritty, fast-draining mix if the pot stays wet.
- Trim back only dead growth, cutting to live green tissue.
- Water deeply but infrequently, allowing the mix to dry somewhat between waterings.
Can brown rosemary recover?
If stems still have green tissue and the roots are not rotten, rosemary can recover well. If stems are brittle and brown all the way through, prune those sections off and encourage new growth from living parts of the plant.
