Sponge Rok. Expanded perlite. Aproximate size 1/4".
Although sponge rok is sometimes used alone it is most commonly found in mixes.
Pictired is 1/4 cubic foot bag.
If you found this page from a search or other link click here to visit Jim's Orchid Supplies Home page. We offer a full line of quality orchid growing supplies, Schaefer greenhouse ventilation equipment, WayCool portable evaporative cooling fans, orchid art, some great orchid links and orchid related information.
If you clicked on a link on our price list simply exit this page to return.