Brown or black leaf spots need a close look at their pattern and progression. Inspect leaf surfaces, recent moisture conditions, and pest evidence before treating a spot as a specific disease.
This tool lists possible explanations, not a confirmed plant diagnosis.
Wet-root-zone warning signs can justify a root inspection, but they do not confirm a diagnosis by themselves.
Check: Check deeper soil, drainage, and roots if accessible. Note soft or dark roots, an unusual smell, or rapidly collapsing growth without assuming one cause.
Curling or damaged new growth can coincide with pests, among other causes.
Check: Inspect leaf undersides, stems, and new growth in good light.
No. A spot pattern alone cannot confirm a cause. Record its shape and progression, inspect for pests, and review moisture and recent conditions before choosing a treatment.
Removing a clearly affected leaf can be part of tidying or limiting damaged material, but it does not identify the cause. Use clean tools and continue to observe the plant.
No. First identify the problem as far as possible and use only products labelled for the plant and indoor setting, following the label exactly.