Zebra Calathea problems & how to fix them
Goeppertia zebrina
Drooping, yellowing, brown tips, or a plant that just won’t thrive? Here are the most common Zebra Calathea problems, what usually causes them, and how to turn things around.
Common problems
Crispy tips (low humidity)
Edges brown with mineral-heavy water or heating-season air. Brown, dry leaf tips caused by air that is too dry for the plant, common in heated or air-conditioned rooms. Existing crispy tips never turn green again, but with higher humidity new growth should come in clean within a few weeks.
Spider mites
The velvety surface hides early infestations — inspect undersides in winter. Tiny sap-sucking mites that thrive in warm, dry air and leave fine webbing and speckled leaves. Caught early they are very treatable; most plants recover fully within 3-4 weeks of consistent treatment.
a two-spotted spider mite among its silk threads
Photo: Gilles San Martin · CC BY-SA 2.0 · Wikimedia Commons
Underwatering
Curling, drooping leaves appear within a day of the mix drying. The plant is not getting enough water, either from infrequent watering or soil so dry it repels water. Prognosis is excellent - most underwatered plants perk up within days of proper rehydration.
Root rot
Standing water in cachepots quietly rots the clump from below. A fungal or bacterial infection of the roots, almost always triggered by soil staying wet too long. Caught early, most plants recover within a few weeks after repotting; if most roots are already mushy, recovery is uncertain.
Phytophthora root rot on a dug-up root ball
Photo: Jerzy Opioła · CC BY-SA 4.0 · Wikimedia Commons
The mistakes that most often kill it
- Letting the pot stand in drained water.
- Winter drought stress in heated, dry rooms.
- Repeated cold exposure below 15 C.
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