Pest identification
What's eating my lasia spinosa?
Aphids
Signs: Colonies on soft young leaves and petioles; honeydew, sooty mold and leaf curl
Control: Remove with a strong water jet; apply insecticidal soap or neem oil; repeat every 5–7 days until clear
Spider mites
Signs: Stippled, bronzed leaves with fine webbing, worse in dry or low-humidity environments
Control: Boost humidity; wipe leaves clean; treat with neem oil or insecticidal soap weekly for 3–4 weeks
Caterpillars / leaf-chewing insects
Signs: Large, ragged holes in leaf blades; frass (droppings) visible on leaf surfaces in outdoor tropical settings
Control: Hand-pick caterpillars; apply Bacillus thuringiensis (Bt) for persistent infestations; check under leaves for egg masses
Keep lasia spinosa pest-free
Healthy plants resist pests best. Get the basics right:
Lasia spinosa pests — FAQ
What is eating my lasia spinosa?
Lasia spinosa is a spiny-stemmed tropical aroid of wetland margins. In cultivation it faces aphids and spider mites on the foliage; in outdoor tropical gardens, caterpillars and grasshoppers may chew the large leaves. Its spiny stems provide some natural deterrence against browsing animals. Root pests are rarely a concern in moist, well-drained substrates.
How do I get rid of aphids on lasia spinosa?
Colonies on soft young leaves and petioles; honeydew, sooty mold and leaf curl Remove with a strong water jet; apply insecticidal soap or neem oil; repeat every 5–7 days until clear
How do I get rid of spider mites on lasia spinosa?
Stippled, bronzed leaves with fine webbing, worse in dry or low-humidity environments Boost humidity; wipe leaves clean; treat with neem oil or insecticidal soap weekly for 3–4 weeks
How do I get rid of caterpillars / leaf-chewing insects on lasia spinosa?
Large, ragged holes in leaf blades; frass (droppings) visible on leaf surfaces in outdoor tropical settings Hand-pick caterpillars; apply Bacillus thuringiensis (Bt) for persistent infestations; check under leaves for egg masses