Hoary Alyssum

QUICK IDENTIFICATION

  • “Hoary” silver color comes from short, star-shaped hairs covering entire plant
  • Grayish-colored leaves with  smooth to wavy edges
  • Sandpaper-like leaf texture
  • Small 4-petal white flower with notched petal tips giving the appearance of rabbit ears
  • Height of 1 to 3 feet

Weed Pictures



Weed Information


Type Information
Toxicity Horses, even when cured in hay.
Control Shallow tilling, digging/hand-pulling the root crown, prescribed burning and herbicide. Contact your County Weed District or local applicator for more information.
Habitat Dry conditions, soils with poor soil fertility, disturbed areas, trails, roadsides, lawns, farm yards, hay meadows and over-grazed pastures
Root Taproot
Leaf Shape Linear, alternate on stem
Lifespan Annual or perennial
Priority 2B Weed Abundant in Montana and widespread in many counties.
Similar Looking Plants Whitetop or perennial pepperweed
Important Information Reproduction from seed only; viable in the soil for up to nine years.
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