Strong, healthy grass, alfalfa, and other kinds of plants are more likely to stop weed development. The best lawn weed prevention is a thick, healthy, and well-cultivated turf. Poor fertilizing, mowing, irrigation, watering, drainage, insect or disease outbreaks, and bad soil compaction can all lead to a thin, unhealthy turf. Using correct mowing height, fertilization and irrigation methods, soil drainage, and other cultural methods will develop a dense, healthy turf that will naturally ward off weeds. Sanitation is another method to prevent spreading weeds.
Violets can invade the lawn if planted on the edge of the flower bed.
Simply try planting the violets away from the flower bed s edge to avoid this infestation. Keeping lawnmower blades and other lawn management equipment clean is another sanitation prevention measure. If the lawn or field must be seeded or reseeded, only buy high quality seeds so there is a less chance of also planting some weed seeds. Certified weed free seed will ensure that the seeds are of very high quality. Collecting and planting local native seed right from the land is also a very effective method.