Does vermiculite have any advantages over sand?
This micalike material, usually somewhat coarser than sharp sand, makes the soil mixture more porous; it is also cleaner and much lighter in weight; and it is an excellent medium in which to sow seeds.
This micalike material, usually somewhat coarser than sharp sand, makes the soil mixture more porous; it is also cleaner and much lighter in weight; and it is an excellent medium in which to sow seeds.
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