Coffee Plant problems & how to fix them
Coffea arabica
Drooping, yellowing, brown tips, or a plant that just won’t thrive? Here are the most common Coffee Plant problems, what usually causes them, and how to turn things around.
Common problems
Underwatering
It collapses theatrically when dry; frequent wilting causes brown, crispy leaf margins. 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.
Crispy tips (low humidity)
Dry air and salty tap water brown the leaf edges. 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.
Root rot
Loving moisture is not loving swamp; stagnant wet soil still rots it. 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
Spider mites
Low winter humidity invites mites on the glossy foliage. 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
The mistakes that most often kill it
- Letting it dry out over and over until branches die back.
- Cold exposure below about 15 C, which blackens the leaves.
- Hot direct sun through glass on its shade-adapted foliage.
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