Lobularia maritima (Sweet Alyssum)
Family:
Brassicaceae (Mustard)
  
Lobularia maritima is an escaped ornamental that grows as a weed on disturbed sites on the plains. Leaves are narrow and 1 to 2 inches long. Plants grow to a height of 4 to 12 inches.

Vegetation zone:  Plains
Time of bloom:  April - September
Origin:  Introduced
Eastern Colorado Wildflowers