The relationship between sand and bowling green performance has become a thing of legend with the majority of clubs still throwing more sand on their greens every year, despite a worrying trend showing poorer and less predictable green performance due to problems like Localised Dry Patch and excessive thatch. It seems that for many clubs the dots aren't being connected between too much sand and poor performance. In this article I will explain the fundamentals that greenkeepers must keep in mind with regard to their bowling green soil.