The original Irwin tree was a seedling of the Lippens cultivar that was open-cross pollinated with Haden,[1] planted on the property of F.D.

[3] The fruit gained commercial acceptance due to its good production, flavor, relative disease resistance, and attractive color.

[citation needed] Today, Irwin is grown on a commercial scale in a number of countries, including South Korea, (particularly on Jeju Island), Japan, Taiwan, and Australia, where it was introduced in the 1970s.

[citation needed] Irwin fruit is of ovate shape, with a rounded base and a pointed apex, lacking a beak.

[citation needed] The trees are moderately vigorous growers capable of exceeding 20 feet in height if left unpruned, developing open canopies.