House and Garden Roots Excelurator is the most powerful root stimulator currently available on the market. This powerful root stimulator ensures a massive explosion of root mass, rids the plants of any brown roots, root diseases and provides an excellent rhizosphere (root environment) in the growing medium. Roots Excelurator creates a film around the roots, which functions as a kind of membrane. It keeps harmful diseases and germs out of the root zone but allows the absorption of nutrients. Roots Excelurator also isolates the germs and prevents them from reproducing.