When there are large populations of weeds within the lawn, it is usually an indication of improper turf selection, poor culture, insect pest or disease invasion, excessive traffic, or an unfavorable growth environment. The presence of specific weeds in a lawn can make it easier to identify and fix common problems.

Lawn areas with bare grass or moss may indicate the possibility of heavy shade or poor drainage.

Chickweed, ground ivy, and violets are other plants that may be commonly seen in areas of intense shade.

Excessive moisture in the soil can be indicated by horsetail or nutsedge, while yarrow commonly indicates soil that is too dry for grass.

Some lawn weeds are not choosy about where they take up residence. Dandelions and quack grass can be found just about anywhere in spite of soil conditions.

Weeds, while aggravating, can be an excellent indicator of deeper problems your lawn may be having.