Waterscapes 101

Spatterdock, Yellow Water Lily or Cow Lily

Nuphar is an emergent aquatic plant. The common name is spatterdock. It is a network of rhizomes that produce heart shaped leaves and yellow flowers. Leaves often float but can also emerge from water. Other names for this plant include yellow pond lily, cow lily and bullhead lily.

This is often confused with water lilies. The yellow flowers produced by spadderdock are much smaller than lilies, 1-2 inches in diameter. 

spatterdock-bullhead-lily
yellow cow lily

Where does bullhead lily grow?

Nuphar spreads by rhizome and seed distribution. Growth typically occurs in 1-2 feet of water. This plant is native to the eastern United States.

Is spatterdock a good plant?

The spatterdock lily provides a wide range of pond benefits. It is an excellent source of cover and habitat for fish. Spatterdock also provides food for aquatic life and animals out of the pond.

Best herbicide for Spatterdock

For early season control, apply Navigate granular herbicide. This is a systemic herbicide that will kill down to the root system.

For mature weeds (flowering), spray the pads with CattPlex, glyphosate. This is absorbed down to the roots. CattPlex has no water use restrictions, and is safe for fish. 

Spatterdock Lily Control