By David Berle
University of Georgia
The flowers are all gone. Cracks are forming in the ground. The
landscape is looking a little baked at the end of long, hot
summer. This is a common problem in the Southern landscape.
Back in the spring, your yard was alive with dogwood and azalea
blooms, which soon gave way to green and eventually brown. What
can a gardener do to perk up the landscape at this time of the
year?
There are several solutions. The temporary answer is to plant
some cheerful annuals to liven things up a little. Garden centers
often have a few things left from spring sales that could still
bring some color back into the landscape.
Lantana and verbena are plants that can beat the heat and produce
color well into the fall. Several varieties of repeat-bloom roses
can still make a difference. And soon, fall mums will be
available with their array of yellows, oranges and burgundies.
Just a few of these heat-tolerant bloomers, carefully placed in
the landscape, can brighten up any yard worn down from the summer
sun.
Next year
The best solution, however, is to plan ahead for next year and
have your landscape looking alive all summer long. Many
perennials, shrubs and even trees can provide color and
excitement at a time when everything else is crying for water.
Plants in the salvia family are known for taking the heat.
Mexican sage (Salvia leucantha) and blue anise sage
(Salvia guaranitica) are two commonly found salvias, but
there are many hybrids as well. Some are hardier than others, but
all seem to take the heat and bloom on through a hot summer.
The perennial sunflowers (Helianthus sp.) perform well at
the end of the summer, as do the asters and repeat-blooming
daylilies. The common blanket flower (Gaillardia sp.)
often seen growing along the coast is a great plant to beat the
summer heat, and it’s extremely drought-tolerant.
The many new shrub roses available today could be considered a
perennial flower or tender shrub. But either way, these exciting
flowering plants are great for keeping color alive.
Gardeners can pick from the knockout roses or some of the other
hybrids like “Nearly Wild” or the butterfly rose (Rosa
mutabilis). All of these will bloom throughout the summer and
are resistant to the diseases that bring down the tea roses by
early summer.
Other summer-flowering shrubs include the butterfly bush
(Buddleia davidii) and the panicled hydrangea, which is
often called Pee Gee Hydrangea (Hydrangea paniculata).
These two shrubs alone could make any landscape look happier and
more colorful when other plants have called it quits for the
summer.
Think big
There are even some trees that will bloom well into the last
summer days.
The crape myrtle is a Southern classic whose name is synonymous
with the heat of summer. The newer types offer attractive bark,
too, and the latest dwarf varieties take up far less room and
work well in planters.
The chaste tree (Vitex agnus-castus) provides a
long-lasting display that attracts butterflies and other insects.
Most varieties have blue flowers, but there are pink- and
white-flowering varieties as well.
And finally, a tree that really shines in late summer is the
golden rain tree (Koelruteria paniculata). This otherwise
common-looking tree stands out in late summer with its brilliant
yellow flowers.
No matter how you choose to brighten up your summer days, select
plants that are hardy in your area and suited to your site
conditions. And remember, many plants bloom well after April
showers have long been forgotten.
(David Berle is a horticulture professor and Cooperative
Extension landscape specialist with the University of Georgia
College of Agricultural and Environmental Sciences.)
