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Help! Why Are My Calathea's Leaf Edges Browning?
Calatheas have expressive, sensitive leaves that move with the light through a daily rhythm called nyctinasty. That sensitivity also makes them particular: if the water, light, or humidity isn't quite right, a Calathea will often respond with the symptom every plant owner dreads, browning leaf edges. Not to worry. Here's what causes brown edges on Calathea leaves and how to fix them.
At Léon & George, our master gardeners have spent nearly a decade growing premium plants and helping thousands of plant parents nationwide, so the guidance here comes straight from hands-on experience.
Prevent future problems with our 10 Commandments of Calathea Care.
For complete care instructions, see our Calathea Care Guide.
Incorrect Lighting
Calatheas need bright, indirect light, never direct sun. They are not desert plants, and placing them directly in front of a window or beneath a skylight can scorch the leaves and brown the edges. Give your Calathea a home with steady, indirect light and plenty of ambient moisture, a well-lit bathroom is often perfect.
Water Quality
Calatheas prefer the kind of water they'd get in their native rainforests. They're sensitive to the minerals and chlorine in hard tap water, which can build up and brown the leaf edges. Use filtered water, rainwater, or tap water left out overnight so the chlorine can evaporate.
Underwatering and Low Humidity
Calatheas like their soil kept consistently, evenly moist, never bone-dry and never soggy. Letting the soil dry out too much causes crispy edges, as does dry indoor air. Water when the top inch begins to dry, and boost humidity with misting, a pebble tray, or a humidifier. Keep the plant away from drafts, AC units, and heaters, and trim brown edges with clean scissors to tidy it up.
Frequently Asked Questions
Why does my Calathea have brown edges?
Brown edges are usually caused by hard tap water, low humidity, underwatering, or too much direct light. Calatheas are sensitive plants that want filtered water, even moisture, high humidity, and indirect light.
Should I use filtered water for my Calathea?
Yes. Calatheas are sensitive to the minerals and chlorine in tap water, which cause browning edges. Filtered water, rainwater, or tap water left out overnight is much gentler on them.
How do I increase humidity for a Calathea?
Mist it regularly, set it on a pebble tray, group it with other plants, or run a humidifier nearby. Calatheas are rainforest plants and thrive in higher humidity.
Can I cut the brown edges off my Calathea?
Yes, trim brown edges with clean scissors, following the leaf's natural curve. Addressing the water quality, humidity, and light will prevent new browning.