Kumquat Tree "Golden Orange" "The little gems of the Citrus family" Fortunella sp . Description Origin and Distribution Soil Climate Propagation Varieties Culture Harvesting Food Uses Pestsand Diseases. Description: Kumquat is a small citrus fruit that grows in climates too cool for other citrus plants. The kumquat tree is slow growing, trees reach heights of 1 to 2.5 m and have a vase-like or rounded canopy. the branches light-green and angled when young, thornless or with a few spines. The apparently simple leaves are alternate, lanceolate, (3.25-8.6 cm) long, finely toothed from the apex to the middle, dark-green, glossy above, lighter beneath. In spring trees have fragrant white flowers are borne singly or 1 to 4 together in the leaf axils, sweetly fragrant, 5-parted, the trees are self-fertile. The fruit is oval-oblong or round, (1.6-4 cm) wide; peel is golden-yellow to reddish-orange, ...