The needed varietal information can be obtained from agricultural advisors or small scale grower trials. The most important varieties and those released in the past ten years are listed in Table 11 . The ten most popular varieties in North America are listed in Table 12. Primarily grown in the Northwestern states, but production is increasing in the Midwest and Maine. Much of this increased production of 'Russet Burbank' is due to its favorable marketing and processing qualities.
Flowers are white and few in number.
The variety has some scab resistance but is susceptible to most other potato diseases, especially leaf roll, net necrosis, and verticillium wilt. Superior' Ear1y . This variety has wide adaptation. Flowers are lavender with white tips. The variety is resistant to scab and net necrosis.