Pest identification
What's eating my american white water lily?
Water lily aphid (Rhopalosiphum nymphaeae)
Signs: Clusters on pad surfaces and flower buds; honeydew accumulation and sap loss weaken the plant and reduce flowering.
Control: Spray leaves firmly with water to dislodge aphids into the pond; koi and goldfish will consume them. Encourage ladybirds near the pond margin.
Water lily beetle (Galerucella nymphaeae)
Signs: Grubs and adults strip the upper leaf surface, creating ragged holes and slots that allow secondary rot.
Control: Submerge affected pads briefly to drown larvae; clear marginal vegetation in autumn where beetles overwinter.
Brown china mark moth (Elophila nymphaeata)
Signs: Larvae cut oval sections from pads to make floating cases; visible as round holes and missing flaps on leaf surfaces.
Control: Remove cases and larvae by hand; reduce emergent marginal planting near the lily to limit adult moth habitat.
Keep american white water lily pest-free
Healthy plants resist pests best. Get the basics right:
- What eats fragrant water lily — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common american white water lily problems & fixes
- American White Water Lily watering schedule
- American White Water Lily light requirements
- Full american white water lily care guide
American White Water Lily pests — FAQ
What is eating my american white water lily?
American White Water Lily (Nymphaea odorata) shares the same aquatic pest complex as other hardy water lilies. Water lily aphids and the water lily beetle are the most reported threats. Avoid pesticides near the water; rely on water jets and pond fish for aphid control and physical removal for beetles.
How do I get rid of water lily aphid (rhopalosiphum nymphaeae) on american white water lily?
Clusters on pad surfaces and flower buds; honeydew accumulation and sap loss weaken the plant and reduce flowering. Spray leaves firmly with water to dislodge aphids into the pond; koi and goldfish will consume them. Encourage ladybirds near the pond margin.
How do I get rid of water lily beetle (galerucella nymphaeae) on american white water lily?
Grubs and adults strip the upper leaf surface, creating ragged holes and slots that allow secondary rot. Submerge affected pads briefly to drown larvae; clear marginal vegetation in autumn where beetles overwinter.
How do I get rid of brown china mark moth (elophila nymphaeata) on american white water lily?
Larvae cut oval sections from pads to make floating cases; visible as round holes and missing flaps on leaf surfaces. Remove cases and larvae by hand; reduce emergent marginal planting near the lily to limit adult moth habitat.