If your grass is invading into your garden bed our other areas you do not wish it to grow we recommend providing a physical border like kerbing or buried root barrier material to prevent the grass physically reaching the area.
Some varieties of grass may also become invasive when overwatered and over fertilised. Try reducing your watering and fertilising and monitoring the results to achieve the right balance for your lawn.
There are herbicides available that can control one grass variety in another grass variety and kill unwanted grass. Please call our friendly sales staff to discuss your situation for advice on which product is appropriate to your situation.