‘PC 7903-2’, more commonly known under the trademarked name, Cowiche™, is a sweet cherry variety released in 2007 by the Washington State University Sweet Cherry Breeding Program for fresh market production. In Pacific Northwest production areas of North America, Cowiche™ blooms moderately late, generally 4 to 7 d after ‘Bing’ (midseason industry standard), whereas harvest timing is usually 3 to 7 d later than ‘Bing’. Cowiche™ is vigorous and has an open canopy with a more pendant growth habit and slightly higher precocity than ‘Bing’. Its productivity on Gisela® 5 rootstock is similar to Chelan™’s but higher than that of ‘PC 7417-9’. Cowiche™ produces very large red–purple fruit that are firm and have excellent eating quality characterized by high soluble solids and acidity. Consumer taste panels have described its flavor as “intense.” Cowiche™ is not self-fertile, but its uncommon S-allele combination, S5S9, currently places it in the same incompatibility group with only one cultivar, Krupnoplodnaya, making it cross-compatible with any moderately late-blooming commercial cultivar.
Centre Technique Interprofessional des Fruits et Legumes 2002 Pomme. Code Amidnon CTIFL, Paris, France
Haldar, H., Haendiges, S., Edge-Garza, D., Oraguzie, N., Olmstead, J., Iezzoni, A. & Peace, C. 2010 Applying genetic markers for self-compatibility in the WSU Sweet Cherry Breeding Program Acta Hort. 859 375 380
Ross, C.F., Chauvin, M.A. & Whiting, M.D. 2010 Assignation of sweet cherry selections to 3 taste groupings based on perceived sweetness and sourness J. Food Sci. 75 S48 S54
Royal Horticultural Society 1995 The Royal Horticultural Society’s color chart. 3rd Ed. Royal Hort. Soc., London, UK