Red Delicious
The Red Delicious is a clone of apple cultigen, now comprising more than 50 cultivars, first recognized in Madison County, Iowa, in 1880. According to the US Apple Association website, it is one of the fifteen most popular apple cultivars in the United States.
Cosmic Crisp
The variety was first planted for commercial use in spring 2017, with 12 million trees pre-ordered by Washington state orchards. The variety was initially only available to Washington growers, and will remain limited to them for at least ten years. It ripens at the same time as Red Delicious and is expected to replace a large part of the Red Delicious stocks. Cosmic Crisp will be available to consumers in 2019, after 20 years of development.