Vermiculite loosens compact soils and helps hold water and nutrients.
Vermiculite is one of the three ingredients in the Square Foot Gardening method by Mel Bartholomew.
This soil additive is formed by heating particles of mica, a natural ore. The heat causes Mica to expand, which makes it extremely porous. The advantage of Vermiculite is in its ability to hold nutrients, boost soil moisture, and aerate the soil.
Some sources of vermiculite are contaminated with harmful chemicals (because vermiculite deposits often form near less desirable compounds). This vermiculite comes from an asbestos free source in Canada.
Quantity: 8 dry quarts (537 cubic inches)
There is enough vermiculite in this bag to fill almost 5 standard planting trays (21 inches by 10 inches by 0.5 inch) or 6 planting pots.
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