What material is the Grasspave2 filled with and why?
Grasspave2 is filled with only one inch of clean sharp sand (soil is never used), overfilling the rings can lead to ruts and product failure. Sand is used as the growing medium because it allows water to percolate very quickly and will never compact and become muddy with use, like soil. Our Hydrogrow mixture is used to provide a water reservoir to the grass roots while they are getting established.
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