Water Hyacinth Control in Ponds: Herbicide Options for Large Infestations

Water hyacinth (Eichhornia crassipes) is a free-floating invasive that chokes waterways. Control depends on infestation size:

• Glyphosate (Rodeo®, Eraser-AQ®) – foliar spray.
• 2,4-D ester (Navigate®, Aqua-Kleen®) – systemic.
• Fluridone (Sonar®, Avast®) – whole-pond treatment.
• Diquat (Reward®, Weedtrine®) – contact herbicide.

Follow all aquatic label restrictions. For large lakes, consult "Managing a Lake" resources.