Pure horticultural grade perlite. Grade 1, Fine Coarseness (granule size about one-eighth of an inch.) Perlite is made from all-natural volcanic rock that is heated under pressure until it explodes like popcorn, leaving a white puff that is so light that it will actually float. Perlite is added to soil and soil-less potting mixes (like coconut coir) to provide additional aeration, drainage, and insulation for roots against extreme cold. Perlite helps keep soil from compacting.
Unlike vermiculite, perlite doesn't hold much water or nutrients, so is ideal for plants that need good drainage or that like soil to dry completely between waterings (succulents, cacti, and a small number of vegetables, flowers, and house plants). Perlite has no microbial or nutritional value. Perlite can have a pH of neutral (7) to slightly alkaline (7.5). Compare to Vermiculite which typically has a neutral pH of 7. You can start seeds in straight perlite, but most potting mixes contain between 10 percent to 20 percent..
- HORTICULTURAL GRADE PERLITE - Each Bag is 8 Quarts and ~2 lbs - Grade 1, Fine Coarseness (granule size about one-eighth of an inch) - Mountain Valley Seed Company Brand
- SOIL ADDITIVE - Add to any potting mix for seed starting and long term growth of plants that don't like overwatering like cacti and succulents, container plants - Helps grow stronger root systems on most plants
- IMPROVES SOIL DRAINAGE - Improves water drainage and provides insulation for roots against the cold - Won't degrade, rot or mold
- IMPROVES SOIL AERATION - Aerates soils for healthier roots, Loosens compacted soil and helps keep soil from compacting
- NON-TOXIC - All natural, sterile, odorless - pH ranges from 7 (neutral) to 7.5 (slightly alkaline) - Can be used as a substitute for sand and as a hydroponic medium
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