The Irwin mango was a cross between the Lippens and Haden cultivars, selected by F.D. Irwin of Miami, FL in the 1940s. It has been introduced overseas and can be found in Australia, South Africa, Taiwan, and Japan. In Japan Irwin mangos are grown under very controlled conditions, prized for their beauty and fetch surprisingly high prices. It was also used extensively in mango breeding projects in Israel, and is a parent of a number of Israeli mangos.
The trees were observed to be low growers with spreading growth habit and produced a small-to-medium-sized oval-shaped fruit with a gorgeous crimson red blush. The flesh is fiberless, soft, and has a very mild flavor in the classic group. It contains a monoembryonic seed.
The trees are quite productive, particularly near the coast, but become anthracnose prone in the interior. The fruit tend to bear in clusters in heavier years.
Irwin would fruit for us in Loxahatchee but get a decent amount of fungus. It is an early season mango and ripens from June to July in West Palm Beach.