Sometimes writing means searching around for inspiration. This time the inspiration has come up and hit me over the head.
Several people have inquired to the Johnson County Purdue Extension office about controlling broadleaf weeds — specifically ground ivy (a.k.a. Creeping Charlie). Ground ivy spreads by seed and stolons (above-ground horizontal stems). It is a perennial found in much of the United States.
Ground ivy has roundish leaves with round, scalloped edges. The stem of the plant is square (roll it around between your fingertips to feel this). Ground ivy has purplish, funnel shaped flowers and is often confused with common mallow.