Plant Problem Diagnostic
Why Do My Houseplants Have Brown Leaf Tips?
The short answer
Brown, crispy leaf tips are most often caused by low humidity, especially in winter, or by letting the plant dry out too long between waterings. Excess fertilizer salts and chemicals in tap water (chlorine, fluoride) also cause it.
Raise humidity with a humidifier, pebble tray, or by grouping plants; water more consistently; ease off fertilizer if salts have built up; and if you grow sensitive species like spider plant, dracaena, prayer plant, or calathea, try rain, distilled, or filtered water. Trim the brown tips off for looks - they won't turn green again.
Humidity and watering
Iowa State Extension says the most likely cause of brown leaf tips is low humidity, which is common in homes especially during the winter months when heating dries the air. Tropical houseplants used to humid conditions show it first.
Inconsistent watering is the other big cause - allowing plants to dry out too long between waterings will turn leaf edges and tips brown. Aim for a steady routine based on checking the soil, rather than long dry spells followed by a soaking.
Salts and water quality
Over-fertilizing backfires here. Iowa State notes that excess salts can build up in the soil when too much fertilizer is applied, which also leads to brown leaf tips. If you've been feeding heavily, ease off and flush the pot with plain water.
Water chemistry matters for sensitive plants. Chlorine and fluoride can cause browning, particularly in spider plant, ti plant, dracaena, prayer plant, and calathea. If you grow these, watering with rainwater, distilled, or filtered water often stops the problem.
Fixes
To raise humidity, Iowa State suggests a humidifier, pebble tray, terrarium, or grouping plants together so their collective foliage holds in more moisture. Grouping is free and surprisingly effective.
Brown tips that are already there won't recover, so trim them off with scissors for appearance while you correct the underlying cause. If tips keep browning after you've addressed humidity, watering, and water quality, check for salt crust on the soil and consider repotting in fresh mix.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Iowa State University Extension - Why Does My Houseplant Have Brown Leaf Tips and Edges? — Identifies low humidity (especially winter) as the most likely cause of brown leaf tips, plus inconsistent watering/drying out, excess fertilizer salts, and chlorine/fluoride sensitivity in spider plant, ti plant, dracaena, prayer plant, and calathea; recommends humidifier, pebble tray, terrarium, or grouping plants to raise humidity.