Supreme Perlite Company

Founded in 1954 and located in Portland, OR, Supreme Perlite is the Pacific Northwest’s oldest and largest perlite producer.

Horticultural Perlite (Fine – Plug Grade)

Lightweight, non-toxic & pH neutral. Supreme Horticultural Perlite is a naturally occurring volcanic rock. When heated, it "pops" and expands ...
~~$19.95~~ $11.00
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