Fig. 42.-Flower of the southern magnolia, Magnolia grandiflora.

magnolia thrives under a wide range of soil conditions but does best
in moist, well-drained soils. Although slow growing and somewhat
difficult to transplant, southern magnolia is long-lived and once
established requires little care.
 Southern magnolia produces a dense shade, and, therefore, it is
difficult to grow grass, flowers and other plants beneath its spread.
Large canoe-like leaves often create a problem in mowing lawns and
hold water which may cause a mosquito problem. This tree is useful
as a lawn specimen, framing tree, background tree for tropical effect
and in old fashioned plantings. Sometimes southern magnolia is used
as a residential street tree, but it is not entirely satisfactory for this
purpose. Southern magnolia tolerates salt spray and is well adapted
for seaside planting. No serious disease pests occur on this tree, but
magnolia scale and blackscale may sometimes be a problem.

 Malus angustifolia. Rosaceae. Southern Crab-Apple. Northern
area. Deciduous. Native.
 Southern crab-apple trees attain a maximum height of about 25
feet and have a wide-spreading, open crown (Fig. 43). Pink, fragrant
blossoms, one inch across, are borne in profusion in early spring prior
to leafing. Small edible, yellow-green apples are produced during the
summer. Alternate, simple leaves are elliptical, slightly lobed, 1 to 2
inches long, dull green above and light green beneath.
 This tree is best adapted to a fertile, well-drained soil and full
sunlight. Crab-apple is useful as a lawn and patio specimen, in back-
grounds of border plantings, as a small framing tree and in natural-
istic, woodland and highway plantings. Insects and diseases affecting
this tree include mites, tent caterpillars and the cedar-apple rust
fungus.

 Mangifera indica. Anacardiaceae. Mango. Southern area and
warmer parts of Central area. Evergreen. Asia.
 Mango grows to 50 feet in height and will develop a round top
with a spread equal to or exceeding its height. Leaves are simple,