Tubers sprout early. The variety produces a high percentage of U.S. No. 1 tubers. It is grown primarily for the fresh market. Sebago' Late . Sebago has wide adaptation with pockets of proauction located in Florida and the Southern states.
Flowers are lilac with slightly lighter tips.
The variety is resistant to mild mosaic and net necrosis, and reported to have yellow dwarf resistance in New York and Wisconsin and brown rot resistance in Florida. It possesses a moderate degree of field resistance to late blight and some resistance to common scab but is susceptible to blackleg and has a tendency toward enlarged lenticels. Centennial Russet' Early . Flowers are lavender with white tips. This variety is susceptible to common scab and most other diseases.