Flower Field (IMAGE) Penn State Caption Because dicamba and 2,4-D typically target broadleaf plants, such as wildflowers, and not grasses, the researchers found that the number of wildflowers diminished, while grasses soon dominated the field edges, which were once blends of broad leaf plants and grasses. Credit J. Franklin Egan Usage Restrictions Non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.