Mother Earth Perlite is naturally occurring siliceous rock that when
heated to 1600 F expands up to 20 times its original volume. This
kilning process is very similar to popping popcorn and produces a
growing medium that is sterile and has a neutral pH of 7.0. The
exceptional physical properties of this giant perlite make it tops in
the perlite world for adding porosity to soil and soilless mixes. This
giant perlite has numerous hydroponic applications as well. The #4
averages a whopping size of around 1” and the #3 measures around ½”.
Available only in our Shoreline Retail Location:
1240 NE 175th Street, Suite B
Shoreline, WA 98155
Not available to purchase online. Sorry!