This may have something to do with the fact that insects prefer yellow flowers, further enhancing the weed's chance to be pollinated, reproduce, and spread. When it comes to weeds in the lawn ...

Dandelions are a deceptive plant—their yellow flowers are bright ... is that they’re technically a weed. “Dandelions create more competition for your lawn to absorb the necessary nutrients ...

Perennial grass weeds are not different from desirable turfgrasses except ... But typically has five-part leaves, yellow flowers, and no fruit. Thrives in poor soil. 2,4-D + MCPP + dicamba, or 2,4-D + ...