Holes in houseplant leaves? Map the damage before you treat

A hole, notch, or missing patch is a visible clue, not a certain pest diagnosis. The mark could be old, mechanical, or part of an active pattern. Build a Leaf Damage Map before spraying, cutting, repotting, or changing several parts of the care routine.

1. Describe the edge and shape

Save a close photo and use plain words: ragged edge, clean split, rounded notch, thin window, or missing patch. Place a ruler or familiar object nearby for scale without touching the leaf. Shape helps organize the next questions, but it does not identify the cause by itself.

2. Place the damage by leaf age

Record whether the affected leaf is old, currently mature, or still new growth. Note whether the mark was already visible while the leaf opened. Do not force an unfurling leaf apart for a better photo.

3. Check under and nearby

Photograph the upper surface, underside, stem junction, and the next two or three leaves. Record additional holes, visible insects, webbing, residue, droppings, eggs, or no visible sign. Do not touch an unfamiliar insect, sharp edge, irritating sap, or unknown residue.

4. Add recent context

Write down outdoor time, a recent move, transport, cleaning, rubbing against a wall, handling, pet access, or no known change. University extension guidance notes that chewed indoor-plant leaves can sometimes follow an outdoor stay, but context alone still cannot identify the cause.

5. Take a dated repeat

Repeat the whole and close photos from the same angles after a reasonable observation interval. Compare whether new damage appeared on this or another leaf. The original hole will not fill back in, so progression is measured by new missing tissue, not by waiting for the old mark to close.

Choose one cautious next step

If you can safely see an active insect or a repeating damage pattern, use plant- and pest-specific guidance from a local extension service or qualified professional before choosing a control. If no new damage appears and the rest of the plant is stable, continued monitoring may give you better evidence than an unconfirmed treatment.

Stop and seek qualified local help when damage spreads rapidly across new growth, a seedling is losing substantial leaf area, the whole plant is declining, or an unfamiliar pest or residue cannot be examined safely. Keep children and pets away from unknown plant material or pests.

Try PlantGuard AI on the App Store

PlantGuard AI is free to download with a sample preview. Real AI checks require PlantGuard Premium; the guidance is not a guaranteed diagnosis or recovery result.

Sources and related checks

The Leaf Damage Map is informed by University of Maryland Extension's indoor-plant diagnostic guide, Colorado State University Extension's diagnostic process, and University of Maryland Extension's integrated pest-management guidance. Pair it with the visible pest-clue checklist, the repeatable recovery log, or the broader sick-houseplant first pass when leaves are also changing color, shape, or posture.