Whitetop

QUICK IDENTIFICATION

  • Gray-green stems and leaves
  • White to cream colored, flat-topped flower cluster
  • Heart-shaped seeds
  • Height 1 to 2 feet

Weed Pictures



Weed Information


TypeInformation
ToxicityCattle.
ControlCultivation, mowing and herbicide. Contact your County Weed District or local Applicator for more information.
HabitatSub-irrigated pastures, ditch banks, irrigated cropland, riparian areas, disturbed sites, including excessively grazed areas, waste areas, roadsides and open grasslands.
RootExtensive root system.
Leaf ShapeLance or arrowhead-shaped, alternate on stem with toothed edges.
LifespanPerennial; two years or longer.
Priority 2B WeedAbundant in Montana and widespread in many counties.
Similar Looking PlantsPerennial pepperweed, lens-podded and hairy whitetop and common yarrow.
Important InformationWhitetop is generally one of the earliest noxious weeds to come up in the spring (May). Seeds remain viable for 4-years and roots can reach depths of 6-feet.
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