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Why Does Grass Grow Better Next To Concrete

Groundskeepers know the mysterious problem of why grass grows better than concrete. But why?

A study shows that the heat-absorbing quality of concrete can help protect grass from extreme temperatures. Thermal energy reflects off the nearby concrete, warming cold air while cooling hot air, which helps grass withstand fluctuating weather conditions and protect its root apparatus under the surface.

Concrete also prevents heavy rains from over-saturating soil and washing away nutrient-rich topsoil. This additional barrier helps absorb water and retains it in the soil more efficiently, resulting in lush greenspaces full of healthy life.

It can act as a natural fertilizer, too; the concrete surface has had years to attract potassium nitrate found in rainfall runoff that acts as a nourishing food for growing plants which explains richer growth in concrete areas than on other parts of the lawn.

Finally, nearby concrete blocks weeds in a purely physical way, making it harder for them to propagate and giving grass time to grow without competition for resources.

These facts provide insight into why grass does better next to concrete, allowing groundskeepers to make wiser decisions when tending their gardens.

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