Roses 101
By Shari Brennan
Roses are synonymous with love and beauty. Their blooms have inspired poets and artists to
greatness. Rose gardeners are also inspired by their beauty and are devoted to their
beloved plants.
Whether you are a new rose gardener or an accomplished veteran, the following guide can
help better your horticultural endeavors. Keep in mind that not all rose types are cared
for in the same way and that this is a general guide. If in doubt, look up your rose variety
in a reliable reference book.
Photo: Andrew Schulman The Knigin Von Dannemark rose blooms once and works well as a hedge.
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Selection
As with any plant, you need to consider how it will work in your landscape. If there is a
specific look or design to your landscape, you must select a rose that fits that scheme.
Even if you don't have a design, you still must examine your landscape to locate the best
place for your new rose. When selecting a rose, consider its color, fragrance and care.
When selecting a color, make sure the new rose will be placed by plants with complementary
colors. The result should make it stand out beautifully and not clash with its surroundings.
If fragrance is your driving force, sniff out antique (or heirloom) varieties since they
have much stronger fragrances than newer ones. Heirloom varieties are generally hardier and
easier to care for since they are grown on their own roots. These varieties are also more
resistant to pests and diseases.
Planting
Be positive your chosen planting location will meet your rose's requirements for successful
blooms. Most roses require at least six hours of sunlight, so start by selecting a sunny
area that drains well and is protected from strong winds.
With the right space selected, work the soil and test it to make sure it is not too acidic
(<6.0) or alkaline (>7.5). Neutral soil is best for roses. Consult your local
extension office on how to get your soil tested. Once your report comes back, amend your
soil if necessary.
Plant according to grower's specifications. Growers at Country Lane Gardens in Seattle
recommend digging a hole 18 to 24 inches deep and then adding a handful of a low nitrogen
fertilizer before planting a potted rose. Once in the hole, they recommend filling in
halfway with soil and then watering thoroughly before adding the remaining soil.
Photo: Andrew Schulman Rose de Rescht heirloom variety blooms from summer until fall.
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"It is important that new roses received adequate water so they can develop their roots. Do
not let a new rose dry out that first season," says Andrew Schulman of Country Lane Gardens
in Seattle.
Feeding
Roses are hungry during their growing season and require fertilizer. When you notice new
growth in the spring, most gardeners recommend starting your fertilizing schedule.
Scott May, a Master Gardener in St. Cloud, Minn., recommends using a fertilizer specifically
for roses. "The amount of fertilizer you use often depends on your type of rose, so check
your rose's requirements first. Many people like the rose spikes because they fertilize the
plant for 30 to 45 days."
After you fertilize, make sure you water the plant well. Schulman offers these words of
caution: "If you feed roses with a high nitrogen fertilizer, all you will get is leaves.
Try a fertilizer that is high in potassium and phosphorus instead."
Schulman prescribes the following fertilizing schedule:
- First in spring
- Second after flush of flowers
- Third at the end of July
Don't fertilize any more or you can cause the plant to grow into the winter months harming it.
Pruning
Proper pruning means knowing when to prune, while pruning at the wrong
time can mean no blossoms. So when should you cut? Repeat-blooming varieties of roses like
floribundas, hybrid teas, and repeat-blooming antique roses should be pruned right before
they leave dormancy. Shrub, climbing and once-blooming antique roses should be pruned
immediately after they are finished blooming.
Photo: Andrew Schulman Madam Hardy roses bloom once and require only five hours of direct sunlight.
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Before you begin, make sure you use sharp shears and wear leather gloves. For all roses,
begin by removing dead, damaged, diseased or weak canes. As you continue to prune, you will
want to keep in mind the overall shape of the plant as you work.
"For floribundas and hybrid teas," says Schulman, "you should cut the canes to 18 inches
above the soil level. For repeat blooming antique roses, prune lightly and try to keep half
to two-thirds of the cane. For all three types, cut �-inch above an outfacing bud at the
same angle as the bud." It is important to prune here because rose bushes will send out new
growth at the bud just below the cut.
Schulman also recommends removing old center growth to get light and air to the plant, which
helps prevent disease. You should also remove a cane that crosses another and any growth
thinner than a pencil.
With shrub, climbing and once-blooming antique roses, the process is different, as you never
want to remove more than one-third of the plant. These plants take longer to establish and
blooms only occur on growth at least one year old. If you prune too severely, you will have
only leaves the following year. Instead, prune immediately after the plants have finished
blooming. Prune them lightly to shape and remove poor growth, and you will have a beautiful
plant with plenty of blooms the next season.
Pests and Diseases
Prevention is the best solution for pests and diseases. If
you give your roses the correct growing conditions, proper fertilizer and adequate water,
you should have few problems. You should also select varieties that are native to or grow
well in your climate. Antique roses have an advantage over newer varieties in that they are
more resistant to pests and diseases.
"Many of the common problems like fungal disease, blackspot and powdery mildew are all
caused by drought. By properly locating the rose, giving it good air circulation and
properly spacing it, you can avoid problems," Schulman says.
When it comes to pests at Country Lane Gardens, he simply washes the Aphids off with water.
If the problem is more than water can handle, then he turns to natural pesticides. "Always
use a natural pesticide first. If you use an insecticidal soap, test it on a leaf first. I
have discovered that these soaps can deform the foliage of some roses."
Scott May suggests incorporating plants among the roses that naturally repeal pests. "I
plant chives between my roses and never have to spray," he says.
Photo: Andrew Schulman Blush Noisette is a climbing rose that grows well in partial shade.
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Wintering
Depending on where you live, wintering roses can be a piece of cake or a nightmare.
However, with a few tips you can increase your chance of success.
Schulman advises, "If you [have] selected varieties that are hardy to your area, then you
shouldn't have to do anything special to them. You can cover them with two to three inches
of mulch and then remove it when the weather warms."
Shrub roses and many antique roses are among the winter-hardy varieties. However, if you
live in climates that experience harsh winters or have selected varieties that are not
hardy to your area, you may have to cover roses.
"If you live in an area that has extreme winter conditions, like Minnesota, you will have to
bury floribunda and tea roses and then mulch over them with straw. Make sure you gently tie
the canes together first. You'll have a much higher success rate wintering your roses if
you try this method," May recommends.
With proper selection of hardy roses and the proper planting site, your roses will thrive
and provide the beautiful, long-lasting blooms you'll love.
Antique rose varieties for beginners
- Rose de Rescht: Blooms from early summer through fall and has a bright magenta
flower with a strong fragrance.
- Madam Hardy: A wonderfully delicate white rose that is very fragrant. Blooms once
and requires only five hours of direct sunlight.
- K�nigin Von Dannemark: A pink rose with beautiful foliage. Blooms once and works
well as a specimen plant or as a hedge.
- Reine Victoria: A beautifully scented rose with pink blossoms. It will remind you of
the flowers on your Grandmother's teacups.
- Blush Noisette: A climbing, repeat-blooming rose with semi-double pink blossoms.
Disease resistant and grows in partial shade.
Shari Brennan has been a professional freelance writer and consultant for more than 10
years. She has a degree in landscape architecture, and has owned and managed interior and
exterior landscaping companies. Despite her busy schedule, she always finds time to work in
her yard.