[1] Though it is known as a red, its actual color changes depending on climate.
This is because many pigments inherited from Vitis vinifera only set during relatively cool weather.
Swenson Red is one of many successful cold-hardy grape crosses involving the parent Minnesota 78.
The pollinator parent for the cross is Seibel 11803 (Rubiland).
Swenson Red has a female sibling named ES417 which has very similar characteristics and is a likely candidate for further breeding.