Pensacola News Journal
For: Saturday, Mar. 10, 2001
By: Daniel E. Mullins
Extension Horticultural
Agent
Santa Rosa County
The dogwoods are blooming
right on schedule. Flowering dogwood (Cornus
florida) is native to the eastern half of the United States, including
north Florida and portions of central Florida.
The showy white bracts add
brilliance to both native woodlands and urban landscapes for about 2 weeks
during early spring. Cultivars with
pink or red bracts grow poorly in Florida, except in some of the cooler regions.
Flowering dogwoods also add
fall color. The amount of fall leaf
color depends upon the amount of sunlight that is received and other
factors. Plants grown in full sun
produce red to maroon fall leaf color.
Bright red fruit is
produced on older plants. The berries
are about ¼ inch in diameter and are produced in clusters of 2 to 16. They are not only attractive during the
winter months, but are a food source for some birds.
Dogwoods have many uses in
the landscape. Properly placed plants
can soften the vertical lines of a small home or provide a background for other
plants such as azaleas. Branches on the
lower half of the crown grow horizontally, while those in the upper half are
more upright. In time this characteristic
can lend a striking horizontal impact to the landscape.
Flowering dogwood is an
understory tree in nature. This means
that they are usually associated with and protected by larger trees. Not surprisingly, this species is often used
on the edge of wooded areas or in groups which provide mutual shading. Other uses include shade for a patio or
deck, to add spring and fall color in a shrub border or as a specimen in the
lawn or groundcover bed.
Dogwood Growing at a Glance
•
Choose locally grown trees, or at least trees that were grown within the
same general latitude, if possible.
•
Dogwoods will grow in sun or shade.
Shaded trees will be less dense, grow more quickly and taller. Sun grown trees are more dense, produce more
flowers and better fall color.
•
Homeowners, unless experienced at transplanting, should purchase and
establish container grown trees in the 5 to 7 foot tall range. Greater success is common with smaller trees
with trunk diameters of less than 1 inch.
Special techniques are required to move dogwoods from the wild.
•
Planting depth is critical. The
dogwood is very sensitive to excessively deep planting. Trees should be planted in a hole as deep as
the top of the rootball, no deeper. On
poorly drained or compacted soil, plant even more shallow, leaving a small
portion of the top of the root ball above ground.
•
Maintain a 2 to 3 inch layer of mulch on the soil surface beneath the
newly planted tree. Use a coarse,
undecomposed material such as pine needles or bark. Keep the mulch pulled back from the stem base so that it doesn’t
touch it.
•
Dogwoods are not tolerant of extended drought periods, especially during
the first year after transplanting. For
the first few weeks after planting, small amounts of water should be applied to
the root ball every day.
•
Over-fertilization can injure a young dogwood. If you wish to fertilize within a year after transplanting, apply
a small amount of slow-release fertilizer to the top of the root ball.
•
Don’t use “weed and feed” and other weed control products within the
root zone of dogwoods. They are very
shallow rooted and can be damaged, especially if the application is followed by
heavy rains.
•
Though various pests sometimes cause problems, the dogwood borer is most
common. These larvae enter the tree
near the base, primarily through wounds.
Avoid bumping and bruising the base of trees with lawn mowers or other
equipment. String trimmers can also
open wounds that are later infested with borers.