The Orange as a decorative garden tree is not so well known as the Orange grown as a fruit tree. It forms, however, most charming effects in the landscape when planted either in group form or as single specimens on the lawn, especially if grown in tree form with a stem of from six to eight feet and a spread of branch, fifteen or more feet across, covered densely with its great masses of bright evergreen foliage and its beautiful, fragrant, white flowers which are nearly always in bloom. It also is unexcelled as a winter garden ornament when laden with its golden fruit. There are many highly ornamental species, including Citrus Aurantium (the Sweet Orange) a native of Asia, Citrus Decumana (the Shaddock) with fruit from six to eight inches in diameter, Citrus Japonica which makes a very pretty bush, Citrus Limetta (the Lime), Citrus Limonum (Lemon), Citrus nobilis (Mandarin), Citrus trifoliata (with its prickly stems and small ornamental fruit) which makes a handsome bush and is also a good hedge plant, and Citrus vulgaris (Bitter Orange) which grows to the height of forty feet and is a handsome tree.
Propagate by seeds, sown one-quarter of an inch deep under glass. Transplant the seedlings, when three inches high, into nursery rows; keep them in the nursery until they are from four to six feet high and then plant them in their permanent quarters. The finer varieties may be increased by budding on the common stock.