Seed Potato Classes

Seed potatoes are classified using various categories, but they all measure the same thing: how many generations removed the potatoes are from the original, pristine, virus-free laboratory.

The finest seed potatoes begin as a culture in the laboratory culture. The plants from those cultures are used to produce mini-tubers, from which the first generation of field seed potatoes are grown.

West Edmonton Seed Potatoes grows seed only to the Elite-2 level, ensuring that seed potatoes shipped from the farm maintain close to laboratory purity, as field tests demonstrate.

Seed from West Edmonton Seed Potatoes is shipped across North America. Purchasers in other jurisdictions can compare seed from WESP against the classifications in their areas, using this chart, prepared by the Potato Association of America.

The abbreviations mean:

G = Generation
F = Foundation
C = Certified
E = Elite
N = Nuclear
P = Pre-Elite
FU = Foundation Uihlein
FG = Foundation Generation

 
Year in Field
Region
1
2
3
4
5
6
Canada PE E-1 E-2 E-3 E-4 F
Idaho
Minnesota
North Dakota
Oregon
Michigan
N G-1 G-2 G-3 G-4 G-5
Montana
Washington
Utah
N G-1 G-2 G-3 G-4 -
Maine N-1 N-2 N-3 G-1 G-2 G-3
California
Nebraska
N G-1 G-2 G-3 F C
Colorado G-1 G-2 G-3 G-4 G-5 G-6
New York Uihlein Farm Uihlein Farm FU-1 FU-2 FU-3 F
Wisconsin U of W Farm U of W Farm FG-1 FG-2 FG-3 FG-4
 
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