Control of tuber dormancy is of interest for commercial potato production and for germplasm preservation in the genebank. Solanum jamesii plants were collected by the author from the wild in New Mexico and Arizona, USA in 1998 and grown in the greenhouse. Tubers harvested in 1999 were placed in paper bags in a continuous 40°F (5°C) tuber storage cooler. No sprouting was observed through fall of 2007 but some tubers had shriveled. Firm tubers were moved to room temperature and planted in the greenhouse in January 2008. After 3 months, an average of nearly 50% of tubers had sprouted and produced normal plants. This extreme 8 year tuber dormancy in S. jamesii should be a valuable research tool for study of dormancy physiology in potato.