Myrtle spurge is a List A noxious weed commonly found in the urban and foothill areas of Colorado. Initially sold as a xeriscape plant, this perennial of the spurge family, has escaped and naturalized in many areas including some remote and rugged areas.
Myrtle spurge shows up in early spring at lower elevations and begins to flower in March-April.
Grey-green leaves are fleshy, egg-shaped, and attach directly to the stem at their base. Stems are stout and trail along the ground. Leaves and stems contain a sticky, caustic sap that can cause severe rashes and blistering.
The inconspicuous flowers are surrounded by chartreuse bracts and develop at the ends of the stems. When the seeds ripen, they are expelled from their capsule and are covered in a sticky gel that adheres the seeds to surfaces and passing animals.