Prunus caroliniana. Rosaceae. Cherry-Laurel, Mock Orange or Wild-Orange. Central and Northern areas. Evergreen. Native. This tree reaches a maximum height of about 35 feet, forms a dense round-headed top and thrives on well-drained, fertile soils. Leaves are glossy green, oblong-lanceolate and 2 to 4 inches long. Leaves, wood and fruit have a bitter taste from a content of prussic acid and are poisonous when taken internally. Very small white flowers borne in racemes 1 to 3 inches long appear in early spring and are followed by small oblong black fruits which ripen in late fall. The dense shade produced by cherry-laurel and its extensive root system make it difficult to grow flowers and shrubs beneath its spread. This tree is used extensively as a hedge, a shade tree for lawn and park, a street tree for narrow streets, for border and screen planting, a base plant for large buildings and for naturalistic, wood- land and highway planting. This tree is mildly tolerant of salt spray and is free of serious insect and disease pests except for a fungus that may cause decay where the tree is damaged. Quercus spp. Fagaceae. Oak. Southern, Central and Northern areas. Native. Native oaks are used for specimen, park, street and roadside plantings to a greater extent than any other native or introduced tree. They are well adapted to climate and soils, are relatively free of attack by insects or diseases, are firm wooded and, because of their size and growth habit, are admirably suited for ornamental planting. Within the range of 30 native species are found evergreen and decid- uous types as well as a wide diversity in mature size, ranging from small, shrubby specimens to immense trees. For general planting evergreen species are chosen almost without exception. Those most widely planted are live oak, twin live oak and laurel oak. The water oak is deciduous and is less widely used. Live and twin live oak are longer-lived than other oaks and are given pref- erence in landscape plantings. The first 3 oaks listed are found in nearly all areas other than the extreme south, so they may be properly selected for planting anywhere except on the Keys. The evergreen live oak, Quercus virginiana, is a valued and pic- turesque shade tree in Florida (Fig. 48). Leaves are simple, entire, thick, elliptical to oblong, up to 5 inches long, shiny above and tomen- tose beneath with revolute margins. Live oak has a dense, wide- spreading crown on a short trunk terminating in large drooping branches. This oak tolerates a wide range of soil conditions but grows best on a sandy, well-drained soil. Trees transplant readily, tolerate salt spray and high winds, are easy to maintain and relatively free of insect and disease problems. Since live oaks are slow-growing and