Root Riot Cube Tray with Clonex Root Riot are organic plant starter cubes for cuttings and seeds for soil or hydroponics. Includes a free ClonexÂ® Gel 15 ml packet. Made from organic material and are fully biodegradable. Root Riot will give you faster, more vigorous rooting. Perfect air/water capacity for healthy roots. New plants transfer easily into soil or any other medium.