Jonagold is a very popular late-season apple that also keeps well. It was developed in the USA in the mid-twentieth century and has become popular in many other apple-growing countries. As its name suggests Jonagold is a cross between Golden Delicious pollinated by Jonathan. The result is a large crisp juicy apple with some of the aromatic flavor of Jonathan adding extra interest to the rich sweetness of Golden Delicious. Parentage: Golden Delicious x Jonathan. Introduced / discovered in 1943.