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Fatal Rose Rosette disease shows up in Adair Co.

Dreadful plant disease has been found at Trabue House Rose Garden. Once you are completely sure that it is Rose Rosette Disease you need to act fast. RRD is believed to be a virus or virus-like pathogen that has yet to be identified.The disease is transmitted through Eriophyid mites and can travel from plant to plant in your garden.

By Barbara Armitage
News from the Adair County Garden Club

I have a confession - I mother my plants. I talk to them tell them how beautiful they are and that they are growing up so fast. So is it any wonder that when I was faced with the discovery of Rose Rosette disease at the Trabue House Rose Garden a couple of weeks ago I nearly lost it.

The distinctive red stems, misshapen leaves and hundreds of thorns on our beautiful Knock Out Rose tree nearly made me cry. It's the helpless feeling of knowing that there isn't anything that I can do. This is one case where my instinctive need to "fix things" won't work.



Rose Rosette Disease is fatal

RRD can sometimes be difficult to diagnose. Some roses may only show some of the symptoms and RRD can be confused with plant damage from chemicals like Roundup. Problems to watch for include very rapid limb tip growth with distorted leaves which can often be pink or red. The rose canes in this new growth can be covered with hundreds of tiny thorns and appear unusually soft and pliable. Flowers can be affected too with fewer petals or distorted color.

Before you panic be sure of your diagnosis. I found the Virginia Cooperative Extension Office web site www.pubs.ext.vt.edu/450/450-620/450-620.html very helpful. For expert local help contact Beth Wilson, Horticulturist at Pulaski County Extension Office bgwilson@email.uky.edu or (606).679-6361 or Kristen Goodin Horticulturist at Barron county Extension Office kristengoodin@uky.edu or (270) 651-3818.

Once you are completely sure that it is Rose Rosette Disease you need to act fast. RRD is believed to be a virus or virus-like pathogen that has yet to be identified.The disease is transmitted through Eriophyid mites and can travel from plant to plant in your garden.

It is important to remove the diseased plant as soon as possible (including the entire root system) and destroy it. If possible burn the infected plant or dispose of it by putting it in a sealed plastic bag and place it in your household garbage.

Surrounding plants can benefit from chemical control the insecticide, Avid is registered for control of both Eriophyid and spider mites on roses. Spray every two weeks from April to September to reduce the chance of infection. Weekly sprays may be necessary during hot, dry weather when Eriophyid mites are most active.

Vigilance may be your best protection. Keep a close eye on your roses. - Barbara Armitage, President, Adair County Garden Club


This story was posted on 2010-09-05 03:19:46
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Rose Rosette Disease found in Adair Co., KY



2010-09-05 - Photo by Barbara Armitage. 201 Jamestown ST, Columbia, KY
"Rose Rosette Disease was first diagnosed on a Knock Out Rose at the Trabue House Rose Garden. With the discovery of a second infected plant at the WAVE radio station and the recent popularity of the Knock Out Rose it's important to keep a sharp eye on your roses," writes Barbara Armitage, President of the Adair County Garden Club.

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