Hydrilla verticillata

Hydrilla verticillata waterthyme

Plant grows in the wild/spontaneouslyPlant is invasive in PA Add to MyPlants View Locations

Locally abundant along margins of rivers and lakes.

Mostly found south-east of the state. See distribution map at BONAP.

Wetland codes
EMP: OBL
NCNE: OBL



Flowers late summer into early fall.

Flowers  white to translucent, tiny & inconspicuous

Leaves  whorls of 4 to 8, margins with easily visible spine-tipped teeth

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Hydrilla verticillata waterthyme

Plant grows in the wild/spontaneouslyPlant is invasive in PA
Add to MyPlants View Locations
Hydrilla verticillata gallery
Plant Summary
perennial forb invasive, noxious flower color: white
Common Names
waterthyme hydrilla