is used to retain moisture and help aerate soil. With it's ability to also provide small amounts of magnesium, potassium, and calcium, it is a
Vermiculite
Vermiculite Full Board, 24 x 36 x 1 in.
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Sta-Green 8-Quart Organic Vermiculite Improves Soil Structure in the Soil Amendments department at
Professional grade horticultural vermiculite Excellent for many uses around the home and garden Porosity of perlite prevents soil from compacting
30 QT Professional Grade Horticultural Organic Vermiculite (30 QT, Vermiculite)
100% Vermiculite - 1 Gallon - Life-Cycle-Organics
Vermiculite Premium Grade 12 Qt
Natural Organic Horticultural Vermiculite that improves moisture and nutrient retention. Vermiculite helps in spreading gas throughout, non-flammable,
30QT Organic Vermiculite Granules for Plants and Gardening
Vermiculite: What you Need to Know - Building Energy