Spots, webbing, or bugs on my Round-leaf calathea?Calathea orbifolia
Spider mites. Rinse the plant in the shower, wipe the leaves, raise humidity, and treat with insecticidal soap or neem oil weekly until clear. Isolate it from other plants.
If something is visibly living on your Round-leaf calathea — or its leaves have suspicious spots — catching it early is everything. Here's how to identify the usual suspects and treat them.
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What's causing it
Spider mites
How to tell: Fine webbing in the leaf joints, tiny moving dots, and a stippled, dusty look to the leaves. They thrive in the dry air Round-leaf calathea already struggles with.
The fix: Rinse the plant in the shower, wipe the leaves, raise humidity, and treat with insecticidal soap or neem oil weekly until clear. Isolate it from other plants.
Mealybugs
How to tell: White, cottony fluff tucked into leaf joints and along stems, sometimes with sticky residue.
The fix: Dab each one with a cotton bud dipped in rubbing alcohol, then treat with neem oil. Check weekly — they hide.
Scale
How to tell: Small, brown, limpet-like bumps stuck to stems and the undersides of leaves, often with sticky honeydew.
The fix: Scrape them off gently with a fingernail or old toothbrush, then treat with neem oil and keep checking.
Fungal leaf spot
How to tell: Brown or black spots, often with a yellow halo, usually after the leaves were wet or the soil was overwatered.
The fix: Remove affected leaves, improve airflow, avoid getting water on the foliage, and let the soil dry more between waterings.
Sunburn (not a pest)
How to tell: Dry, bleached, or brown dry patches only where strong direct sun hits the leaf, with no bugs or webbing — Round-leaf calathea is medium / indirect light.
The fix: Move it back from the glass into its medium / indirect light range.
Not sure which one it is?
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Get the app →Prevention
Inspect new plants before bringing them home, check the undersides of leaves now and then, keep humidity up to deter mites, and isolate anything infested.
Common questions
How do I get rid of bugs on my Round-leaf calathea naturally?
For most houseplant pests: isolate the plant, rinse it off, wipe the leaves, and treat with insecticidal soap or neem oil once a week until they're gone. Dab mealybugs with rubbing alcohol. Persistence beats strength.
Are pest treatments safe around pets?
Neem oil and pesticides can irritate or harm curious pets — keep treated plants out of reach while they dry, follow the label, and check with your vet or ASPCA if a pet ingests any.
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