City of Boulder:
Russian Olive
City of Boulder:
Scotch Thistle
City of Boulder:
Bladder Senna
City of Boulder:
Soapwort or Bouncing Bet
City of Boulder:
Sulphur Cinquefoil
City of Boulder:
Perennial Sweetpea
City of Boulder:
Tamarisk
City of Boulder:
Common Teasel
City of Boulder:
Dalmatian Toadflax
City of Boulder:
Canada Thistle
City of Boulder:
Cheatgrass or Downey Brome
City of Boulder:
Dame's Rocket
City of Boulder:
Jointed Goatgrass
City of Boulder:
Houndstongue
City of Boulder:
Diffuse Knapweed
City of Boulder:
Purple Loosestrife
City of Boulder:
Mediterranean Sage
City of Boulder:
Myrtle Spurge
City of Boulder:
Musk Thistle
City of Boulder:
Oxeye Daisy
City of Boulder:
Myrtle Spurge - The King of Noxiousness
City of Boulder:
Myrtle Spurge - The King of Noxiousness
City of Boulder:
Myrtle Spurge going to seed
City of Boulder:
Volunteers and staff on OSMP work very hard to remove Myrtle Spurge from the land.
City of Boulder:
It escapes from people's gardens and becomes an invasive pest.
City of Boulder:
Myrtle Spurge - Colorado List A noxious weed