 From then on, Schoenmakers collected many potent cannabis strains and crossed them to create his own strains.In the process he was able to cross equatorial sativas with Afghani indicas to create strains that were more suited to the temperate climates and indoor growing mediums of his European and U.S. customers.By 1986, Schoenmakers's cannabis seed company had become a runaway success with sales to more than 15,000 different growers in the United States alone.