Horticultural Perlite water retaining inert growing medium Just as horticultural perlite has served the professional grower for many years, it can help the home gardener solve a multitude of common problems. In addition to promoting drainage and aeration in heavy clay soils, horticultural perlite provides optimum moisture retention for successful plant growth. When horticultural perlite is added to heavy clay soils, water ponding and surface crusting may be eliminated. In addition, plant roots may more easily penetrate the perlite/soil growing media and develop more fully. Horticultural perlite can be particularly advantageous in modifying the structure of general garden soil, patio plantings, and roofscapes.
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