This unique fruit is a cross between the key lime and the kumquat, combining the tartness of limes with the sweet, edible peel of kumquats. The limequat tree is a cross between the key lime and the kumquat tree. · in this guide on limequat tree care, we will provide a comprehensive explanation of what a limequat tree is, the importance of proper care when growing it indoors, and an overview of five expert-recommended strategies for ensuring your limequat citrus tree has success. The limequat (citrus × floridana) is a citrus hybrid that is the result of a cross between the key lime and the kumquat, hybridized by walter tennyson swingle in 1909. Learn growing tips, cold tolerance, and why the entire fruit is edible. A hybrid between a kumquat and a key lime, the limequat is a relatively cold hardy tree that produces tasty, edible fruits. · discover the eustis limequat tree , a unique 1909 florida hybrid of lime and kumquat. · the limequat is an appealing fruit tree, a hybrid of the kumquat and regular lime, that can be grown in pots or planted directly in the ground. · the limequat is a fruiting tree that doesnt get quite as much press as its citrus cousins. For optimal care, ensure frequent watering during summer and reduce to bi-monthly in winter. The limequat (citrus × floridana) is a compact, cold-hardy citrus hybrid developed in 1909 by botanist walter tennyson swingle. It gets its tolerance for cold weather from the kumquat and the citrus flavors from the key lime. Perfect for home gardens.