A rose is a perennial flowering shrub or vine of the genus Rosa, within the family Rosaceae, that contains over 100 species. The species form a group of erect shrubs, and climbing or trailing plants, with stems that are often armed with sharp thorns. Natives, cultivars and hybrids are all widely grown for their beauty and fragrance

Monday, July 28, 2008

Dealing with Rose Diseases

by Piedro Molinero

To be sure that your appreciated roses stay in the best of health, just adopt these tips for your rose garden.

1. Black Spots on Leaves

This disease is usually called black spot. Black spots come along as circular with fringed edges on leaves. They make the leaves to yellow. Take away the infected leafage and collect any fallen leaves close to the rose. Artificial sprays can be applied to prevent or treat this sort of rose disease.

2. Stunted or malformed young canes

Called powdery mildew, this is a fungus disease that covers leaves, stems and buds with wind spread white powder. It causes the leaves curl and become purple. Spray with Funginex or Benomyl to treat this fungal disease.

3. Blistered underside of leaves

Called rust, this disease is characterized by orange-red blisters that become black in fall. It can come through the winter and will then attack fresh sprouts in the spring. Collect and throw away leaves that are contaminated in autumn. A Benomyl or Funginex spray every 7-10 days may help.

4. Malformed or stunted leaves and flowers

This is made by spider mites. They are tiny yellow, red or green spiders found on the underside of leaves where they absorb juices. The application of Orthene or Isotox can help in addressing this plague.

5. Weak and mottled leaves with tiny white webs under them

This is caused by aphids. They are small soft-bodied insects that are usually brown, green or red. Oftentimes clumped under leaves and flower buds, they suck plant juices from tender buds. Malathion or diazinon spray can help roses to come through these bugs.

6. Flowers that don't open or are deformed when they open.

Thrips could be the cause behind this problem. They are slight, brown-yellow bugs with fringed wings that also suck juices from flower buds. Cut back and throw away the plagued flowers. Orthene and malathion can also address this problem.

Remember that roses are hungry feeders that need much fertilizer to become healthy bushes.

About the Author
Piedro Molinero is a hobby gardener and you will be able to discover more useful DIY Gardening Tips on his blog.

Friday, July 25, 2008

Have You Heard of Floribundas?

by Steve Knapp

At first, the American Rose Society did not accept the term 'floribunda'. Is a rose that has been crossbred with a polyanthus still a rose? The floribunda might be dubbed the modern rose. You could think of it as an enhanced rose, bred to bring maximize the production of beautiful blossoms.

what, exactly, is a floribunda? Although many varieties have been developed, a floribunda is a hybrid that was originally a cross between a polyanthus and a hybrid tea rose. There was a man in 1920 who developed many varieties; his nickname became Papa Floribunda.

These roses are often grown to add color to the garden. The floribunda normally grows lower than most other roses - which can be a positive attribute. Sometimes called a cluster rose, the floribunda can tolerate neglect better than almost any other rose bush except shrub roses. The floribunda is a great landscape choice for its ability to provide a nearly continuous display of color.

My favorite traits of the floribunda include:

Plentiful blossoms;
Enduring blooms;
Very versatile for landscaping - they can be used as a hedge or to simply an accent the landscape;
Some varieties have a very powerful fragrance - more intense than most other roses;
Finally, they have a beautiful, delicate appearance.

They do however have a few less favorable traits including:

They're not eligible for Queen of Show;
They prefer plenty of food (to support all of those blossoms), and fare much better on a regular feeding schedule;
They take 3 full years to reach maturity;
They have shorter stems, and smaller blossoms than your standard tea rose.

Floribundas also need good air circulation; so when pruning, try to leave the center of the bush open. Good air circulation also helps to discourage insects and disease as well. You should also try to leave the older canes when pruning, this will reward you with bonus color later on. However, make sure to remove any cane that rubs another.

If you're growing a floribunda in a pot: Be sure it's got plenty of root space, good drainage, and a pot that is heavy enough to withstand any breeze they may come along. Even with floribundas, you may need to use chemicals to combat various assailants. Concentrates should be applied with care so as not to cause leaf burn.

About the Author
I'm a garden hobbyist, just like you... but I'm really good at finding answers on the internet. My friends & family have convinced me to begin sharing the information I've found that helps me keep my yard looking great all year-long. Check out my condensed eBook The Planting & Caring for Your Rose Garden now at www.PruneMyRoses.com.

Sunday, July 13, 2008

Selecting Roses As Part Of A Landscape Garden Design

by Jonathan Yaakobi

Spring is the season when the splendor of rose bushes is at its height. Despite their drop in popularity in recent years, mainly due to difficulties in care and maintenance, the sight of a large group of roses in full bloom, is unquestionably one of the highlights of the gardening year. While success depends on adopting correct horticultural practices, it actually starts or ends with a clear understanding of the design role to be played by the roses.

As roses are almost always grown for their flowers and not for the shape or form of the bush, (with the possible exception of climbing roses) the primary task is to carefully choose a color scheme. Randomly throwing colors together is as unlikely to achieve satisfying results in the garden, as it would be in the sitting room. Massing a single color, creates a strong, decisive design, and is always more effective than mixing colors together in a small space. A large group of Bordeaux rose flowers by a white wall for instance, can create a dramatic focal point in the garden. White flowers on the other hand, are often used by designers as a bridge or transition between different color groups.

For roses to be most effective, they have to relate well to the other elements in the garden. They are at their best where a quiet hedge serves as a background, while they tend to look in the middle of a large lawn. Roses should be given their pride of place. Planting herbaceous flowers between the bushes, whether annual or perennial, usually weakens the composition. It is preferable in my view, to cover the ground instead with a neat mulch of wood chippings.

Thought should also be given to the flower-type of the roses to be chosen. For this reason, familiarity with the various groups is desirable. Typical of hybrid tea roses for example, are large, spectacular flowers that appear singularly on each flower bud. In small intimate spaces, the architecture of the individual flower assumes greater significance than in a large border, so hybrid teas are often more suited to such locations. Floribunda roses on the other hand, produce a far greater quantity of flowers from each bud, although the individual flowers are invariably smaller and less interesting in their structure. If the effect desired is a very powerful mass of color, in a relatively large space, then choosing a variety from the floribunda group, could be preferable to a hybrid tea. Furthermore, many hybrid teas are highly fragrant, whereas floribundas are rarely so.

Although roses are grown essentially for their blooms, other design functions can also be considered. If a climbing plant is desired to cover a fence or a wall, a suitable rose could well be the answer. Miniature roses can look excellent as a transition between a lawn and a shrubbery, while some species roses (that is wild roses) enhance a Mediterranean style garden with their arching, sprawling form. Rambling roses of course can be used as large-scale ground covers.

About the Author
My name is Jonathan Ya'akobi. I've been gardening in a professional capacity since 1984. I am the former head gardener of the Jerusalem Botanical Garden, but now concentrate on building gardens for private home owners. I also teach horticulture to students on training courses. I'd love to help you get the very best from your garden, so you're welcome to visit me on http://www.dryclimategardening.com or contact me at jonathan@dryclimategardening.com