Magnolias
Magnolias are some of the most beautiful fragrant flowering trees you can find. They
come in evergreen, semi-evergreen and deciduous varieties, in tree form with either
single or multiple trunks, or as shrubs. There are over 80 different species known.
Magnolias are relatively slow growers that can vary in height from 25-90 feet tall
with a canopy between 10-40 feet. Different varieties bloom at various times so you
can have flowers from spring through summer. Flower colors range from pure white
to cream, beige, yellow, pink, mauve, purple, red and various bi-colors. The leaves
are also quite varied, from coarse and narrow to leathery or gray and fuzzy.
The Southern Magnolia, a southern favorite, (zones 7-9), is probably the most well
known for large and highly fragrant showy white flowers that can get as large as
10 inches across. Magnolias are also known for their attractive glossy, heavy leaves
that are rust colored on the underside. Both their flowers and the leaves are often
used in wreaths, holiday decorations and wedding bouquets. They dry particularly
well and are therefore especially popular in dried floral arrangements. The “star
Magnolia” is a cultivar that can grow in more northern states and the Midwest, all
the way down to zone 4.
Culture
Magnolias are low-maintenance trees that grow well in full sun or partial shade.
They are also more tolerant of deep shade than many evergreens. Magnolias should
be grown in well-drained, rich, moist soil that ranges from acidic to neutral. Another
consideration when choosing a planting spot is to stay away from windy sites, as
Magnolias are susceptible to damage from wind, especially cold breezes. Magnolia’s
roots are tender so covering with mulch is a good idea to keep soil from temperature
extremes. If you decide to move a Magnolia you already have in your landscape it
may suffer some transplant shock. The leaves may turn brown and drop but this usually
self-corrects.
Magnolias do not require much pruning, but if you decide to prune, do it in late
winter or after blooming in late summer. You can do minimal pruning throughout the
season to keep the tree tidy, if desired.
Magnolias are usually disease and pest free, but one of the more common problems
affecting the Southern Magnolia tree is a mite that attacks the undersurface of the
leaves. The mites cause a brown discoloration on the undersurface of the leaves,
especially near the base and margins. The leaves may drop prematurely.
Pruning
Prune the magnolia just after flowering since blooms appear on old wood, or last
season's growth. Pruning later in the season or early spring will remove buds that
produce blossoms, resulting in a disappointing flowering season. Prune lightly for
improved shape, by cutting back suckers that grow from ground level away from the
main trunk. Cut back branch tips to encourage more blooms. Also remove diseased or
dead canes.
Adding a Magnolia to your landscape will be a stunning addition that is easy to maintain
and will provide beautiful, large, fragrant flowers for many weeks in spring and
summer.