Pest identification
What's eating my colocasia illustris black runner?
Spider mites
Signs: Bronze stippling and fine webs on leaf undersides; dusty appearance on foliage
Control: Blast with water; apply neem oil or insecticidal soap; boost humidity above 60%
Aphids
Signs: Soft insects on tender new growth; sticky honeydew; black sooty mould on older leaves
Control: Knock off with a strong water jet; treat with insecticidal soap; attract aphid predators outdoors
Caterpillars
Signs: Large ragged holes chewed through leaf blades; frass on foliage
Control: Hand-pick; spray Bt kurstaki for repeated infestations; check plants at dusk when caterpillars feed
Slugs & snails
Signs: Smooth-edged holes in leaves at ground level; silvery mucus trails on foliage and soil
Control: Remove mulch from stem base; use iron phosphate bait; hand-pick at night
Keep colocasia illustris black runner pest-free
Healthy plants resist pests best. Get the basics right:
- What eats elephant ear — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common colocasia illustris black runner problems & fixes
- Colocasia Illustris Black Runner watering schedule
- Colocasia Illustris Black Runner light requirements
- Full colocasia illustris black runner care guide
Colocasia Illustris Black Runner pests — FAQ
What is eating my colocasia illustris black runner?
Colocasia Illustris Black Runner faces spider mites and aphids as primary indoor threats, while outdoor plantings attract caterpillars and slugs that target its large decorative leaves. The stoloniferous habit means pests can spread plant to plant via runners — inspect new offshoots every time you divide.
How do I get rid of spider mites on colocasia illustris black runner?
Bronze stippling and fine webs on leaf undersides; dusty appearance on foliage Blast with water; apply neem oil or insecticidal soap; boost humidity above 60%
How do I get rid of aphids on colocasia illustris black runner?
Soft insects on tender new growth; sticky honeydew; black sooty mould on older leaves Knock off with a strong water jet; treat with insecticidal soap; attract aphid predators outdoors
How do I get rid of caterpillars on colocasia illustris black runner?
Large ragged holes chewed through leaf blades; frass on foliage Hand-pick; spray Bt kurstaki for repeated infestations; check plants at dusk when caterpillars feed
How do I get rid of slugs & snails on colocasia illustris black runner?
Smooth-edged holes in leaves at ground level; silvery mucus trails on foliage and soil Remove mulch from stem base; use iron phosphate bait; hand-pick at night