Dry air, excess moisture, or direct AC?
Use the pattern and the potting mix together. A single brown edge cannot identify the cause on its own.
- Direct AC: damage is often strongest on the side facing the vent, especially after relocation.
- Dry-air stress: edges may crisp while the root zone is not persistently wet; also check for mites.
- Excess moisture: the mix stays wet unusually long, lower leaves may yellow, and drainage needs checking.
- Dust: the film wipes away evenly; mite stippling remains in the leaf tissue.
What to do today
Change one variable at a time so the plant response remains interpretable.
- Move the pot beyond the direct path of the vent without placing it in a dark corner.
- Check moisture below the surface and empty standing water before deciding to water.
- Wipe both leaf surfaces gently with plain water and inspect the undersides while cleaning.
- Photograph the plant and review new leaves after the environment has had time to stabilize.
Do you need an exact humidity target?
A stable, moderate indoor environment is usually more useful than chasing one number. Read humidity together with airflow, temperature, light, drainage, and how quickly the mix dries. Avoid placing a humidifier so close that leaves remain wet.
Cleaning without creating another problem
Support each leaf with one hand and wipe with a damp soft cloth. Plain water is enough for routine dust. Avoid leaf-shine products, abrasive scrubbing, and leaving water pooled in leaf joints.
How to judge recovery
Old cosmetic damage will not turn green again. Look for steady leaf posture, normal drying of the mix, no expanding stippling or webbing, and healthy new growth. If decline continues, inspect roots and pests before making another environmental change.
