Troubleshooting
Calathea Mirabilis problems — and how to fix them
Calathea Mirabilis (Goeppertia mirabilis) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Brown, crispy leaf edges
The narrow leaves brown fast in low humidity or with hard, fluoridated water. Raise humidity and use only filtered, distilled, or rainwater.
Wilting or curling
Thin foliage shows thirst quickly. Keep soil evenly moist and humidity high; persistent curling means it is too dry or in too much sun.
Yellowing leaves
Usually overwatering or poor drainage. Let the surface dry slightly between waterings and make sure the pot drains freely.
Spider mites
Dry air invites mites onto the slender leaves. Increase humidity, rinse the foliage, and treat with insecticidal soap or neem oil if they take hold.
Prevent calathea mirabilis problems before they start
Most calathea mirabilis issues are care-mismatch, not bad luck. Dial in the basics:
Looking for calathea mirabilis in general rather than its problems? Read the full calathea mirabilis care guide — light, water, soil and feeding.
Calathea Mirabilis problems — FAQ
Why is my calathea mirabilis brown, crispy leaf edges?
The narrow leaves brown fast in low humidity or with hard, fluoridated water. Raise humidity and use only filtered, distilled, or rainwater.
Why is my calathea mirabilis wilting or curling?
Thin foliage shows thirst quickly. Keep soil evenly moist and humidity high; persistent curling means it is too dry or in too much sun.
Why is my calathea mirabilis yellowing leaves?
Usually overwatering or poor drainage. Let the surface dry slightly between waterings and make sure the pot drains freely.
Why is my calathea mirabilis spider mites?
Dry air invites mites onto the slender leaves. Increase humidity, rinse the foliage, and treat with insecticidal soap or neem oil if they take hold.