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Weed Control

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White and Green Flowering Plants

Hoary Cress

Hoary Cress Hoary Cress
Scientific Name
Cardaria draba
Family
Brassicaceae
Life Cycle
Perennial

Plant Information

 

Back

Identification and management tips

  • Hoary cress has white flowers and blue green leaves which clasp the stem.
  • For small infestations, digging within 10 days after plant emergence for 2-4 years can be effective.
  • Long-term reductions must include planting with competitive grasses to occupy ground once infested by the weed.

Most effective control methods and timing

Jan Feb Mar April May June

Prev
Mech
Chem
Cult

Prev
Mech

Chem

July Aug Sept Oct Nov Dec

Prevention (Prev) Monitor and destroy new plants before seed production.

Mechanical (Mech) Hand pulling, digging, cutting, mowing and tilling.

Cultural (Cult) Biological control agents, livestock grazing, and revegetation practices.

Chemical (Chem) Selective herbicides based on the plant and the specific location. 

Links

thumbnail of pdf hoary cress factsheet

Factsheet pdf


Photo Source/Credits

  1. Top: Noxious and Invasive Weeds of Utah CD: USU Extension, Steve Dewey
  2. Bottom: USU Weed Web

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