Versatile, organic vermiculite! Palmetto Vermiculite Grade A-3 is a premium, coarse particle size material meeting ASTM C516 Type 1, Grade 2 specifications. This OMRI-listed material is great for organic gardenging. It is widely used as a component …

Grade 3 vermiculite has larger granules than grade 4 vermiculite which can give your soil a better texture. Grade 3 vermiculite also helps to improve aeration, water retention, and drainage. For best results, add a two-to-one ratio of soil and vermiculite to lighten and loosen the soil mixture.

The Viagrow vermiculite is a #3 horticultural grade. This grade is considered best for growing plants due to its balance of porosity, water retention, and compaction when added to soils or growing mediums.

Palmetto Vermiculite Grade A-3 is a premium, coarse particle size material meeting ASTM C516 Type 1, Grade 2 specifications. This OMRI-listed material is great for organic gardenging. It is widely used as a component of growing media for professional growers.

Organic Coarse Vermiculite for Indoor Gardening Plants and Mushrooms – Enhances Soil Aeration, Seed Germination, Rooting Cuttings – Small Packages and Bulk (Vermiculite Grade 3 – Medium, 3 qt)

Enhance Growth with Grade 3 Horticultural Vermiculite for Plants. Horticultural vermiculite is permanent, clean, odorless, non-toxic, sterile and pH neutral. It will not deteriorate, turn moldy or rot.

Viagrow Vermiculite is a natural soil amendment that promotes moisture retention and aeration in potting mixes and delivers vital elements to the plant roots resulting in better root development, growth rates and yields.

Vermiculite is a mineral. Non-toxic; Asbestos free; Provides excellent heat resistance (does not burn).

GRADE 3 MEDIUM - It's aerating and water holding capacity make it a great addition to growing media - especially to a sandy mix. Vermiculite also helps in the aeration of clay soils. Can also be used as a surface layer to the mix to help retain moisture when raising seed.