The objective was to generate a high-quality draft assembly of the whole genome as a resource for future applications such as temporal and spatial dispersal studies of the pathogen and to investigate genotype diversity relevant in fungicide resistance studies and cypress breeding programs. Supporting images illustrate Leyland cypress tree showing *Passalora* twig blight symptoms; Infected Leyland cypress leaf with sporulating conidioma of *Passalora sequoiae*; Conidia of *Passalora sequoiae*, and *Passalora* 9LC2 phylogeny.