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