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Hairy Whitetop

Scientific Name

Lepidium appelianum Al-Shehbaz (formerly known as Cardaria pubescens) (ITIS)

Common Name

Hairy Whitetop, Hoary Cress, Globe-podded Hoary Cress, Ball Cress, White-top lens, Peppergrass

Native To
Date of U.S. Introduction

First discovered in 1919 (Mulligan and Findlay 1974)

Means of Introduction

Introduced accidentally with contaminated alfalfa seed (Mulligan and Findlay 1974)


Crowds out native species and crops (Zouhar 2004)

Hairy whitetop
Image use policy

Hairy whitetop, plants in late season in fruit


Photo by Joseph DiTomaso; University of California - Davis

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Distribution / Maps / Survey Status

Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Council or Task Force
  • Fact Sheet: Hoary Cress [PDF, 983 KB]

    • Jan 2014
    • Alberta Invasive Species Council (Canada).

    • See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act

Federal Government
State and Local Government