Erect or Spreading and requires ample growing space. Its branches spread outward to create a lush, full tree with a stately look. Capable of growing at a moderate rate to a height of 80 feet or more with a 30 to 40-foot spread, southern magnolia forms a dense (more open in the shade), dark green pyramidal shape, the lower branches often bending to the ground. Growing a magnolia tree in cooler zones is possible, but the growth rate will be much slower. Southern magnolias grow from 1 to 2 feet a year, reaching 60 to 80 feet tall with canopies spreading 30 to 50 feet wide. Magnolia grandiflora, or Southern Magnolia, is a large, broadleaf evergreen, medium-sized tree that is noted for its attractive dark green leaves and its large, extremely fragrant flowers. Diameter: 10-12 m (30-40 ft). Southern magnolia is most often grown as a single-trunk tree, but it can also be grown in a multi-trunk form. Southern magnolias grow from 1 to 2 feet a year, reaching 60 to 80 feet tall with canopies spreading 30 to 50 feet wide. The widely-planted 'Claudia Wannamaker' (Magnolia grandiflora 'Claudia Wannamaker') is a fast grower with a broad pyramid form. It has been selected as the state tree of Mississippi. If you can’t irrigate it periodically, plant it in a spot where it will be in the shade for a few years, although they can also thrive in full sun, depending on the cultivar. Heavy clay soil can slow root growth, thus diminishing height growth. The original saucer magnolia grows 25 to 30 feet tall at a rate of 24 inches per growing season, and “Burgundy” reaches 25 feet tall at a rate of 24 … The first is height, the most obvious indicator of growth, and it simply indicates the total measurement of the tree from the uppermost branch to the base of the trunk where it meets the ground. © Copyright 2020 Hearst Communications, Inc. Other trees, including the magnolia, have a spreading growth pattern: their branches outward from tree top to bottom without a distinct tapering pattern. 'Samuel Sommer' (Magnolia grandiflora 'Samuel Sommer') is a fast-growing cultivar that has bronze and green leaves up to 14 inches wide, and grows from 30 to 40 feet tall and 30 feet wide. The Southern magnolia grows at a rate known as moderately fast in the gardening world; in normal growing conditions, it will average a full foot of growth in height every year. It responds to water and fertilization with faster growth. Cultivars are grown from cuttings and have characteristics identical to their parent tree. They are prone to girdling roots; to ensure vigorous growth of these spreading roots, remove any that circle at the bottom of a tree before you plant it. Their roots extend to roughly four times the width of the canopy. Further, the bike is thin and can be easily damaged by garden tools such as weed eaters or mowers. Other factors that affect the speed of growth of a magnolia include soil conditions and weather conditions. Annie Mueller is a professional writer and blogger. Magnolias usually average about 0.2 inches of diameter growth per year. As the name indicates, the magnolia is a Southern native. If you want your magnolia tree to grow into a predictable shape and with the kind of leaves that you want, it's better to plant a slower-growing cultivar from a nursery. This large, stately, native North American evergreen tree with its large, beautiful, saucer-shaped, fragrant flowers is almost a Southern landscape tradition. Outcalt also states that a particular variety of the Southern magnolia, M. grandiflora gallissoniensis, is said to be cold-hardy and may produce better growth in the cooler climates. Southern magnolias have somewhat soft-wooded branches and can break in ice storms. Has Evergreen foliage. Southern magnolias are found in many established landscapes across the South and flank the clubhouse at Augusta National golf course in Augusta, Georgia. During winter drought (absence of snow or rain), water bimonthly, soaking the ground around the tree. The fastest growing cultivars were 'Margaret Davis' (Magnolia grandiflora 'Margaret Davis) and 'Smith Fogle' (Magnolia grandiflora 'Smith Fogle'), based on total height, caliper (trunk width) and canopy width, with 'Smith Fogle' matching the overall winner 'Margaret Davis' on height and canopy width. Growth Rate: The growth rate is variable, depending on the seedling, but generally it grows at a slow to medium rate (1 to 2 feet yearly), but faster when young. The magnolia is a medium-sized tree, meaning that its full height ranges from 35 to 60 feet and its spread can reach about 15 feet around. It grows best (and thus, fastest) in the Southeast of the United States: the lower parts of Texas, Louisiana, Mississippi, Alabama and Georgia, and the Florida Panhandle. Outcalt also states that a particular variety of the Southern magnolia, M. grandiflora gallissoniensis, is said to be cold-hardy and may produce better growth in the cooler climates. The magnolia is a medium-sized tree, meaning that its full height ranges from 35 to 60 feet and its spread can reach about 15 feet around. The Southern magnolia grows at a rate known as moderately fast in the gardening world; in normal growing conditions, it will average a full foot of growth in height every year. Rounded or Spreading Shape. Young ‘Little Gem’ Southern Magnolia. A southern magnolia will grow faster in conditions that it likes. The speed of growth of a magnolia tree will vary depending on where it is being grown. Other factors that affect the speed of growth of a magnolia include soil conditions and weather conditions. 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