Grodan® Stonewool A-OK Starter Plugs™ Loose in CartonA- OK Starter Plugs™ for starting seeds and rooting of cuttings prior to plugging into the larger Grodan Gro-Blocks. A-OK Starter Plugs™ come loose in a carton for those who prefer to saturate as individual plugs. Easy to use with propagation trays such as the Grow Smart Tray. Note: the AOK plugs are shipped as individual loose plugs, bulk in the carton. There is no shrink-wrap.