8.5L, ~13lbs 1/8"-3/8" black lava rock

Ships in a medium flat rate box, 8.5L, or roughly 13lbs of product. Cost of shipping this product is separate from any plants/seeds/gemmae/other substrate you may purchase.

I use this as part of my Mexican/Tropical Pinguicula mix. It is not rinsed/washed. I have not tested it with any other genera of carnivorous plants.