What is considered the best defense against invading weeds?

A dense, vigorous stand of turfgrass is indeed the best defense against invading weeds. This is because a healthy turfgrass cover can effectively outcompete weeds for essential resources such as nutrients, water, and sunlight. When turfgrass is dense and robust, it creates a barrier that limits the ability of weed seeds to germinate and establish themselves.

Additionally, thick turf can shade the soil, further reducing the chances of weed seed germination by denying them the optimal conditions they need to thrive. Maintaining strong turfgrass not only suppresses existing weeds but also prevents new ones from taking root, ultimately leading to a healthier and more sustainable lawn.

While other methods, like using multiple herbicides or frequent mowing, can be part of a comprehensive weed management strategy, they do not provide the same level of proactive defense as cultivating a dense turfgrass stand. Planting more flower beds might not directly enhance the grass's defenses against weeds, as it could create additional areas for weeds to emerge. Thus, focusing on establishing and maintaining a healthy turf is fundamental in integrated pest management.