The original Irwin tree was a seedling of the Lippens cultivar that was open-cross pollinated with Haden, planted on the property of F.D. Irwin in Miami, Florida in 1939.The tree first bore fruit in 1945 and was named and described in 1949. The fruit gained commercial acceptance due to its good production, flavor, relative disease resistance, and attractive color. 'Irwin' has also been sold as a nursery stock tree for home growing in Florida.
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