Eustis Limequat

The limequat was deliberately bred by USDA botanist Walter T. Swingle in Florida in 1909, who hand-pollinated Key lime flowers with kumquat pollen specifically to combine true lime flavor with the kumquat's superior cold tolerance and edible peel — a purposeful response to the devastating Florida freezes of 1894 and 1895, which had underscored the real need for more cold-hardy citrus. Swingle released three resulting varieties to the nursery trade in 1913, naming each after a Florida town: Eustis, Lakeland, and Tavares. Eustis itself, somewhat ironically given its name recognition today, was reportedly the least successful of the three at introduction — accounts describe its original plants as producing less and less tasty fruit, with poor cold hardiness that killed both original specimens during their second winter — while Lakeland proved the more reliably productive and better-flavored of the group among growers who have compared them directly. None of the limequats ever achieved real commercial importance as a fruit crop, but Eustis and its siblings remain popular as ornamental potted plants, valued for their edible, sweet peel paired with tart, aromatic flesh.