Challenger Grapes

Challenger (Unknown parentage) Released from Southwest Missouri State University. The cross for this grape was made at Cornell University's Geneva, New York station, but the material was transferred to Missouri and the parentage was lost in the move. A red grape, the performance of this variety has been disappointing. Flavor is neutral, to the point of being almost insipid if it doesn't develop enough sweetness. Left to hang until it is past prime maturity, the fruit sometimes develops an odd "fish egg" texture. Production is good, but the vine is excessively vigorous, making it hard to manage. The variety is hardy to about -10 F and doesn't have any special disease resistance. Ripens about three weeks before Concord. 
Even with it's flaws, it's a very handsome grape and may do well in a hotter climate than mine.