Low water landscaping: Why Colorado homeowners are making the smart switch - eviltoast
  • Slatlun@lemmy.ml
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    1 month ago

    It is functioning as mulch. Lets water in but slows evaporation. Allows air transfer to soil but blocks direct sunlight (to keep the actual soil cooler and help prevent weed establishment). Also usually light color stone is used. That will reflect some heat away during the day.