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Ohio State University Extension

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Hairy white top or ballcress (Lepidium appelianum)

Hairy white top or ballcress (Lepidium appelianum)

Description: Perennial creeping and branching  plant in the mustard family that grows up to two feet tall. Plants appear grey-green, soft, and hairy

Life Cycle: Perennial

Habitat: Open conditions, pastures, and disturbed areas. Prefers alkaline soils and very drought resistant.

Leaves: Blue-green in color,alternate, elongate, with lower leaves being stalked and upper leaves having two lobes clasping the stem. Up to 4 in. long.  

Flower: Numerous tIny white flowers with four petals are borne in clusters blooms in spring.   

Fruit: Tiny, roundish Inflated seeds pods are covered in fine hairs

Root: Deep, spreading root system

The problem is…hairy white top is a prolific spreader. Each plant produces 300-2000 seeds and shoots can develop from any fragment of the root system.

Hairy Whitetop seedling

hairy white top patch in late spring

Hairy Whitetop whole plant

Hairy Whitetop