Harris Vermiculite Helps with soil aeration and drainage to keep your plants looking healthy. The Premium Horticultural Vermiculite is pH neutral， non-flammable， odorless， non toxic， and will not decay or shrink. Use with cuttings， bulbs， soil， composted bark and more. Listed with the Organic Minerals Research Institute for organic use.Harris Orchid Potting Mix will help your Phalaenopsis roots grow and expand without compacting， and won't suffocate your roots like some blends may do. Helps with proper aeration， root ventilation， and drainage- no wet feet， no root rot. Water， nutrients， and proper sunlight exposure are the top 3 factors in getting your orchid to thrive and bloom time and time again. It was developed by master growers and is the orchid fertilizer of choice for all orchid enthusiasts. Provide your orchids with the drainage， airflow， and root ventilation they find and thrive on in nature. This premium potting soil is ideal for indoor potted container orchid flower plants. It provides a rich and porous medium for growing beautiful and full flowers. For use with a variety of Orchids， including Phalaenopsis， Cattleyas， Dendrobiums， Cymbidiums， Oncidiums， and all epiphytic orchids.

Aerates soil

Improves drainage

Supports root structure to stimulate fast root growth

pH neutral， non-flammable， odorless， non toxic

Helps retain air， plant food and moisture， releasing them as the plant requires them

OMRI listed