A white bag of natural volcanic perlite, 4 cubic feet, with blue logo and text details.

Supreme Perlite Coarse Horticultural Growing Media, 4 Cubic Feet

Medium
$72.99
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A white bag of natural volcanic perlite, 4 cubic feet, with blue logo and text details.
  • A white bag of natural volcanic perlite, 4 cubic feet, with blue logo and text details.
  • Hands holding a handful of white coarse horticultural perlite with infographic text overlay.
  • A bag of horticultural perlite next to descriptive text, usage facts, and a small photo of seedlings.
  • A comparison chart showing different grades of horticultural perlite and their recommended uses.
  • A collage showing the perlite production facility, workers, manufacturing equipment, and processed material.
  • The back of a white horticultural perlite bag with extensive product information and usage instructions.
  • A white bag of natural volcanic perlite, 4 cubic feet, with blue logo and text details.
  • Hands holding a handful of white coarse horticultural perlite with infographic text overlay.
  • A bag of horticultural perlite next to descriptive text, usage facts, and a small photo of seedlings.
  • A comparison chart showing different grades of horticultural perlite and their recommended uses.
  • A collage showing the perlite production facility, workers, manufacturing equipment, and processed material.
  • The back of a white horticultural perlite bag with extensive product information and usage instructions.
Supreme Perlite Coarse Horticultural Growing Media, 4 Cubic Feet

Supreme Perlite Coarse Horticultural Growing Media, 4 Cubic Feet

$72.99
Unit

Supreme Perlite Coarse Horticultural Perlite is a 4 cubic foot (113 liter) bag of heat-expanded volcanic rock designed to improve soil aeration and drainage. This natural growing media is ideal for gardeners looking to loosen heavy soils, start seeds, or root cuttings in both indoor and outdoor settings.

Key features

  • Balanced Drainage – Provides optimal moisture retention and air circulation for root systems by introducing pore spaces into the soil.
  • Organic Certified – Listed with OMRI and CDFA OIM, ensuring the material is free from heavy metals and pathogens.
  • Consistent Composition – Contains a mix of large, medium, and fine grains that will not decompose, compact, or deplete soil nitrogen over time.
  • Versatile Use – Can be used as a standalone propagation medium, a hydroponic growing medium, or mixed with peat moss, compost, or coconut coir.
  • Natural and Sterile – Made from 100% natural, asbestos-free siliceous volcanic rock that is sterile, non-toxic, and virtually pH-neutral.

Specifications

Volume 4 cubic feet (113 liters / 120 quarts)
Material 100% natural, heat-expanded siliceous volcanic rock
Properties Sterile, asbestos-free, pH-neutral, incombustible
Available Grades Medium, Coarse

Ideal for

This coarse grade perlite is ideal for seed germination, cutting propagation, hydroponic systems, hanging baskets, roof deck gardens, and conditioning heavy native soil for better plant health.

FAQ

Is this perlite suitable for organic gardening?

Yes, this product is listed by the Organic Materials Research Institute (OMRI) and the California Department of Agriculture’s Organic Input Material Program (CDFA OIM).

Will this perlite decompose over time?

No, this perlite is permanent and stable; it will not degrade, compact, or decompose when mixed into soil or growing media.

Can I use this for hydroponics?

Yes, this horticultural grade perlite is effective for use in hydroponic gardening systems as a lightweight, stable growing medium.

Does this perlite contain asbestos?

No, this product is asbestos-free.

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