Dames Rocket

dames rocket plant
dames rocket habit
dames rocket flower

Dames Rocket

Hesperis matronalis

Information Sheet (PDF)


Colorado List B - Control required in Jefferson County


General

  • Family: Mustard (Brassicaceae)
  • Has been used as an ornamental but no longer available for sale in Colorado
  • Introduced from Eurasia


Habitat

  • Biennial or short lived perennial forb
  • Found in forests, roadsides, stream banks, pasture and rangelands


Plant


Vegetation

  • Lance-shaped, slightly hairy, toothed edges, alternate
  • Leaves 2 to 4 inches long
  • Mature plants up to 3 to 4 feet tall


Roots

  • Fibrous, shallow


Flower

  • About ¾ inch wide
  • Grouped at the end of vertical stems
  • May to August
  • White to purple with four petals


Seed

  • 1 ½ inches long
  • Seedpods very narrow


Reproduction

  • Seed


Control


Biological

  • None


Chemical


Cultural

  • Fertilization to promote grass cover
  • Prevention
  • Removal - bag and dispose of flower and seedheads
  • Re-vegetation of highly disturbed sites


Mechanical

  • Burning - N/A
  • Grazing - N/A
  • Mowing- N/A


Use all chemicals according to the manufacturer's label. No specific recommendation or endorsement is made or implied by listing methods or products.