Grodan® 1.5 Starter Mini-Blocks™ 45 Count Strip (NEW IMPROVED) CaseGrodan Starter Plugs are designed for starting seedlings and rooting stem cuttings. The finely woven stone wool in the Starter Plug provides the perfect environment for young roots. Grodan plugs have excellent uniformity, strength and shape that provides the perfect basis for optimum germination and uniform seedling results. The uniformity and reliability of Grodan plugs provide a solid basis for automatic or manual processing, uniform germination and