Pest identification
What's eating my bent alligator flag?
Aphids
Signs: Dense colonies on young stems and leaf undersides causing distorted growth, sticky honeydew, and secondary sooty mould.
Control: Remove with a strong water stream; use insecticidal soap or neem oil spray; attract beneficial insects such as lacewings by planting companion flowers nearby.
Grasshoppers
Signs: Large, irregular chewed sections along leaf margins and blades, especially in late summer in warmer US states.
Control: Hand-pick early; apply neem oil as a feeding deterrent; in severe outbreaks use spinosad-based spray; encourage birds which predate grasshoppers.
Caterpillars
Signs: Skeletonised or raggedly chewed leaves from moth or butterfly larvae; frass (droppings) visible on foliage.
Control: Hand-pick larvae and eggs; apply Bacillus thuringiensis (Bt) spray; check plants at dusk when feeding is most active.
Keep bent alligator flag pest-free
Healthy plants resist pests best. Get the basics right:
- What eats bent alligator flag — the species this cultivar belongs to
- What eats bent alligator flag — our other guide for the same plant
- What's wrong with my plant? — the diagnosis apps compared
- Common bent alligator flag problems & fixes
- Bent Alligator Flag watering schedule
- Bent Alligator Flag light requirements
- Full bent alligator flag care guide
Bent Alligator Flag pests — FAQ
What is eating my bent alligator flag?
Bent Alligator Flag (Thalia geniculata) is a tall tropical marginal plant and generally tough in warm climates. Aphids and grasshoppers are the most common threats in outdoor settings, chewing or sucking on stems and foliage. Caterpillars occasionally feed on the broad leaves, and snails may attack new growth.
How do I get rid of aphids on bent alligator flag?
Dense colonies on young stems and leaf undersides causing distorted growth, sticky honeydew, and secondary sooty mould. Remove with a strong water stream; use insecticidal soap or neem oil spray; attract beneficial insects such as lacewings by planting companion flowers nearby.
How do I get rid of grasshoppers on bent alligator flag?
Large, irregular chewed sections along leaf margins and blades, especially in late summer in warmer US states. Hand-pick early; apply neem oil as a feeding deterrent; in severe outbreaks use spinosad-based spray; encourage birds which predate grasshoppers.
How do I get rid of caterpillars on bent alligator flag?
Skeletonised or raggedly chewed leaves from moth or butterfly larvae; frass (droppings) visible on foliage. Hand-pick larvae and eggs; apply Bacillus thuringiensis (Bt) spray; check plants at dusk when feeding is most active.