Unlike many introduced exotic thistles, this native species is not a troublesome weed.

Despite its importance in numerous ecosystems, this sagebrush can become a troublesome weed.

Plants that grew from the seeds were troublesome weeds, and rarely as attractive as the mother plant.

Achyrachaena mollis has some invasive potential in introduced locations, but is not recorded as one of the more troublesome weeds.

The species can be a troublesome weed in tropical crops, particularly when fields are hand cultivated.

This plant is considered a very troublesome weed in many areas.

In horticulture the species may be regarded as a troublesome weed, colonising lawns and paths.

Plants are apt to become troublesome weeds in turf that is at all damp.

Moss can be a troublesome weed in containerized nursery operations and greenhouses.

It can also be a troublesome weed, obstructing the flow of water in rivers and ditches.