Holes in Leaves on Calathea: Causes, Checks & Fixes

Quick answer

Holes in Calathea (Calathea spp.) leaves mean something removed or tore tissue—chewing insects, thrips rasping, mechanical tears during unfurling, pet nibbles, or leaf-miner exit holes. Unlike split-leaf monsteras, indoor calathea keeps whole patterned blades that fold upward at night and lie flat by day. Any open hole is damage, not a natural fenestration pattern.

For how chewing pests and mechanical tears work in general, see our holes in leaves guide. On Calathea, the diagnostic clue is usually inside rolled new leaves still unfurling—the cigar-shaped cylinder hides caterpillars until holes appear on pink stripes, medallions, or green patterning, while dry winter air can split soft tissue as the blade opens.

First step: examine the hole edge, then inspect every rolled new leaf and leaf underside under bright light before you spray or repot.

When to use this page vs other Calathea guides

What holes in leaves look like on Calathea

Calathea produces bold patterned leaves from short rhizomes near the soil. New leaves emerge rolled tight like cigars before they open, and mature blades show purple undersides with stripes, medallions, or mosaic patterning on top. Indoor calathea foliage stays whole—unlike mature Monstera deliciosa, which develops ornamental splits as it ages. When you see a hole, sort it by pattern:

Caterpillar chewing — Irregular holes and notched margins, often starting on soft tissue inside rolled new growth. Dark frass pellets on leaves, stems, or the saucer below. You may find a larva tucked along undersides or inside a partly unfurled cylinder. See caterpillars on Calathea.

Thrips rasping — Tiny scrape marks, silvery streaks, and black varnish-like specks on upper leaf surfaces; new leaves may look scarred or distorted at tips. Full-thickness holes are less common than stippling but can appear on heavily fed tissue. See thrips.

Leaf miner trails — Winding pale or brown tunnels inside the leaf with only a small exit hole—not a large ragged chew. See leaf miners.

Unfurling tears in dry air — Small holes or splits on the newest one or two leaves where the blade stuck together while opening inside the rolled cylinder. Often paired with crispy edges in winter rooms below the 50–70% humidity calathea prefers. No frass, no night feeding, and damage limited to recent unfurls points here—not caterpillars.

Pet nibbles on accessible margins — Torn sections along leaf edges on lower, reachable leaves without insect signs. Calathea is non-toxic to cats and dogs, which makes edge chewing common when pots sit on low shelves—damage stops once the plant is moved out of reach.

Mechanical snags — Clean linear splits or one-time holes on outer leaves that brush walls, neighboring pots, or humidifier mist streams. Damage stays on the same leaf after you reposition the plant; no frass, no trails.

Fungal leaf spots that fall out — Dark spots with yellow margins may dry and drop, leaving small shot-hole appearance—usually with preceding brown halos, unlike clean mechanical tears. Route persistent spotting to black spots.

Irregular chew damage on patterned Calathea foliage—compare torn margins with intact purple-backed tissue on the same rosette.

Cigar-roll unfurl tears (calathea only)

Calathea pushes each new leaf rolled tight before it opens. In dry winter air below the 50–70% range this genus needs, the unfurling blade can stick to itself inside the cylinder and split as it opens, leaving a small hole or linear tear through the center of the patterned surface. No frass, no night feeding, and damage limited to the newest one or two leaves on dry-room plants points here—not caterpillars. Low humidity on houseplants usually shows gradual crispy margins first; unfurl tears appear suddenly on a single new blade.

Nyctinastic folding vs pest damage (prayer plant only)

Healthy calathea leaves fold upward at night and lie flat by day—a nyctinastic movement shared with maranta and stromanthe. Pest holes stay torn whether the leaf is raised or flat; if damage only appears when blades are spread open in daytime but the tear pattern matches a physical snag against a shelf lip, suspect placement—not insects. Active caterpillar feeding, by contrast, adds fresh ragged holes on new growth across several nights regardless of leaf position.

Pet-safe margin nibbles (calathea only)

Because Calathea is listed as non-toxic to cats and dogs, curious pets often sample accessible leaf edges without the vomiting that toxic aroids trigger. Edge-focused tears with no frass, no internal mines, and no spread after you elevate the pot strongly suggest pet contact—not a mystery pest. Rabbits and other small pets should still be kept away; pet safe does not mean chew-proof.

Why Calathea gets holes in leaves

Chewing pests are the most common cause of true holes indoors. Caterpillars chew ragged full-thickness holes; leaf miners tunnel between leaf surfaces. Indoor houseplants can carry caterpillars that hitchhike on nursery stock or patio placements, and warm rooms let moth eggs hatch year-round without outdoor predators to slow them.

Rolled new growth hides larvae until patterning shows damage. A calathea in a crowded prayer-plant grouping can carry insects on lower axils while the owner notices holes only when a new striped leaf opens at the rosette center. Dense overlapping foliage on humidifier trays creates the same blind spots.

Outdoor summer brings eggs indoors. Calatheas on shaded patios pick up moth eggs; damage often appears weeks after the plant returns to a windowsill. One larva can chew through several tender new leaves in sequence because calathea concentrates soft growth at each rolled cylinder.

Dry air splits unfurling tissue. Low humidity causes brown tips and edges on sensitive houseplants; on calathea it can also tear new leaves apart as they emerge from the cigar roll. This is not infectious and does not spread leaf to leaf like pest feeding.

Pet access on low shelves. Non-toxic calatheas on coffee tables and floor pots invite edge chewing that mimics insect damage until you catch the pet in the act or move the plant.

Thrips and occasional beetles rasp or chew patterned tissue—usually with silver scarring or stippling alongside holes. See thrips on Calathea when scrape marks dominate.

Calathea does not develop natural perforations indoors the way mature Monstera deliciosa fenestrates. If holes appear on whole patterned blades, something damaged the tissue.

How to confirm the cause

Work through these checks in order:

1. Edge test — Ragged, irregular margin with chew marks → insects. Clean linear tear → mechanical or unfurl snag. Serpentine trail visible when you backlight the leaf → leaf miner.
2. Frass check — Dark pellets on leaves or below the pot → caterpillars. Neither frass nor slime → consider mechanical, pet, or dry-air unfurl tears.
3. Cigar roll first — Gently unroll the outer layer of the newest growth spear and inspect the unfolding leaf inside. Active feeding usually hits soft tissue at the rosette center before older, leathery blades lower on the stem.
4. Night patrol — Check leaf undersides and unfurling tips with a flashlight after dark. Caterpillars feed when room lights are low.
5. Shake test — Hold white paper under a suspect leaf and tap the petiole. Slow-moving worms confirm caterpillars; quick jumping specks point to thrips.
6. Timeline — New holes on different leaves weekly signal active feeding. One unchanged tear for a month suggests past snag or pet contact.
7. Placement trace — Follow which outer leaves contact walls, shelves, or neighboring prayer plants. Isolated damage along that path needs repositioning, not spray.
8. Humidity check — If only the newest leaf inside a dry cylinder has a center split and edges are crispy, raise humidity before treating for pests.

First fix for Calathea

Photograph the holed leaf, examine the hole edge, then inspect every rolled new leaf and leaf underside under bright light before you spray or repot.

Do not change watering or fertilize a holed calathea before you know whether insects are active. Extra nitrogen pushes soft new growth that chewers prefer. Do not compost mined or infested leaves indoors where insects can disperse.

Step-by-step recovery

After the first targeted fix:

1. Re-inspect every three to five days for two weeks—one missed caterpillar can open new holes on the next unfurling leaf inside its cylinder.
2. Hold isolation until no new damage appears on emerging center spears. Calatheas on shared humidifier trays touch neighbors easily.
3. Rinse dusty leaves monthly in lukewarm shower water to dislodge early colonizers—avoid leaving water pooled in the crown.
4. Prune only when necessary — Remove leaves more than half destroyed after pests are gone. Partial holes on green patterned blades still photosynthesize.
5. Adjust placement — Keep pots away from traffic paths and heating vents that dry unfurling tissue; see Calathea light for stable indirect exposure.
6. Scout after outdoor time — Rinse and quarantine patio calatheas before mixing them back into your collection.

For a small plant with mines or caterpillars on every leaf, division of healthy rhizome sections at repotting may salvage one clean offset faster than fighting entrenched pests on a single crowded rosette.

Recovery timeline

Holed tissue does not fill in. Judge recovery by clean new leaves, not by old perforated blades. Calathea in bright indirect light with stable watering and humidity often outgrows light damage within one to three weeks once the cause is removed.

Lookalike symptoms to rule out

Yellow lower leaves without holes point to overwatering or not enough light—not chewing.

Brown crispy tips without open holes suggest low humidity or brown tips from dry air or tap-water minerals—not caterpillars.

Sticky honeydew without ragged holes suggests aphids, mealybugs, or scale—sap feeders, not chewers.

Fine stippling and webbing suggest spider mites in dry winter rooms—not large irregular holes with frass.

Natural fenestration does not apply to Calathea. Missing splits on a monstera in the same room is a species mix-up, not a calathea trait.

Mistakes to avoid

Do not spray insecticide before confirming live pests—mechanical tears and dry-air unfurl splits do not need chemical treatment.

Do not assume one holed leaf means the problem is solved. Follow the rosette and check undersides on lower sections behind the rolled center spear.

Do not overhead soak the crown when rinsing frass off leaves. Stem rot develops quickly when water pools in crowded prayer-plant centers.

Do not ignore pet access because calathea is non-toxic. Edge chewing is common on low shelves and mimics pest damage for weeks.

Do not return an isolated plant after one clean day. Hold it two weeks with weekly checks for new holes or mines.

How to prevent holes next time

• Quarantine new calatheas two to three weeks before mixing collections on shared humidifier trays.
• Rinse patio plants before winter bring-in; inspect rolled center spears on each rosette.
• Keep humidity at 50–70% during heating season to protect unfurling tissue—see low humidity.
• Elevate pots above pet reach; Calathea is pet safe, so cats sample accessible margins.
• Scout rolled new growth weekly during spring and summer when moths and thrips are most active near open windows.
• Water from soil dryness, not leaf appearance—stressed calathea in wet soil is more vulnerable to secondary problems.
• Use filtered or rainwater for routine care so cultural stress does not mask early pest signs on sensitive foliage.

When to worry

Escalate when:

• Fresh holes appear on multiple shoots within a week
• Leaf-miner trails spread through several new leaves
• Frass accumulates across a crowded rosette despite handpicking
• New center spears stop unfurling because tissue is stripped or mined
• Rhizome crowns soften at soil level alongside spreading damage

A single old tear on one lower leaf, with firm stems and clean new growth elsewhere, is usually not an emergency. Discard and restart from a clean rhizome division only when every leaf is mined or stripped, repeated treatment failed, and the plant has no healthy offsets left to salvage.

Conclusion

Holes in Calathea leaves always mean damage—chewing, mining, tearing, or spotting—not a natural leaf pattern. Read the hole edge, inspect rolled new growth and purple undersides, and match the pattern before you spray or repot. Calathea recovers quickly from light hits once the cause is gone; focus on clean unfurling leaves, quarantine discipline, humidity that protects cigar-roll expansion, and keeping pet-safe pots out of nibbling reach.

Related Calathea guides

• Calathea overview — placement, rhizome habit, and care baseline
• Calathea watering — when wet soil is not the issue
• Calathea light — bright indirect light for steady new growth
• Calathea soil — moisture-retentive mix that still drains
• Caterpillars on Calathea — ragged holes with frass
• Leaf miners on Calathea — tunnels inside the blade
• Thrips on Calathea — silver streaks and scarred tips
• Low humidity on Calathea — unfurl tears in dry air
• Calathea problems hub — all common issues on this species

Related tool

Use the Plant Problem Diagnosis Tool to narrow causes for holes in leaves on this plant before changing multiple variables at once.