First-Time Lily Growth in a 30-Year Farm Pond: What to Do?

A 30-year-old farm pond (lower water level due to drought) has water lilies around its entire edge for the first time. The owner wants eradication methods.

Why Now?

Lower water levels expose shallow margins where lily rhizomes can establish. Drought likely triggered this expansion.

Management Options

• Manual cutting: Repeatedly cut leaves below waterline to starve rhizomes. Labor-intensive but non-toxic.
• Grass carp (triploid): May consume lilies; check state regulations (often require permit).
• Herbicides: Only as last resort. Use aquatic-labeled products (e.g., glyphosate formulations for aquatics). Hire a licensed applicator.
• Acceptance: Lilies provide habitat, shade, and nutrient uptake. Many farm pond owners manage rather than eradicate.

Expert Help

Contact your county Extension service—they know local regulations, approved methods, and contractors for large ponds.

Total eradication in a large earthen pond is difficult; sustainable management is often more realistic.