New open access article on RRD published by HortScience: What is Rose Rosette Disease?
View the 'What Wednesday' video clip on Rose Rosette disease:
Are you aware there is a website dedicated to Rose Rosette disease? Check it out at:
- Monitor for symptoms frequently (once per week).
- Bag and remove diseased plants quickly (there is no known cure for Rose Rosette disease).Bagging is necessary to prevent further spread of the disease via the air borne mite vector. Remove the root ball. This does not have to be bagged as the mite does not reside in the root ball. The infected plants should be destroyed by burning or transporting to a landfill. Do not compost.
- A new rose may be replanted in the same space after one week has passed.
- Miticides can be used to control the mite vector to prevent further spread of the virus.
- The spread of the mite vector and thus the virus can be decreased by not planting roses too closely to each other and by interplanting roses among non-rose plants or structures.
Next time you are at an NCPN meeting and hear a friendly voice in a lilting French accent, it likely belongs to Jacques Ferare, an industry representative to the NCPN-Roses Tier 2 Committee. He is Vice President for Licensing and Rose Program Director at Star Roses and Plants in West Grove, Pa. A native of Nice, France, Jacques graduated from Colorado State University with a M.S. in Floriculture and has honed his rose expertise working around the globe for such enterprises as Meilland International, the French Rose breeder, The Conard-Pyle Co., based in Pennsylvania, and Star Roses and Plants in California. Jacques is a member of Pi Alpha Xi, the Honorary Society for Floriculture.
Jacques has been an enthusiastic supporter of the Clean Rose Collection maintained by the Foundation Plant Services. His leadership and vision has been integral to the success of adding Roses to the National Clean Plant Network. NCPN support for the rose clean plant collection is allowing the expansion of the collection, the renovation and retesting of the established collection, the reassessment of virus testing protocols, and the development of important networking and educational opportunities. With the efforts of Jacques and of all the other industry supporters, the rose industry now has a virus-tested source for rose propagation and breeding. The FPS clean rose collection is the largest such publically supported collection in the world.
Married with three grown daughters, Jacques enjoys gardening, which he does not limit to roses, as well as hiking and playing the guitar. One of his pet peeves is confining roses by themselves in a garden bed without any neighboring plants, creating what he has memorably coined a rose ghetto.
NCPN is lucky to have the energy and perspectives Jacques brings to NCPN-Roses.
Rose is the newest specialty crop, and the first ornamental, to join the National Clean Plant Network. Launched in 2015, National Clean Plant Network for Roses (NCPN-R) held its organizational meeting in April of 2015, establishing a 16-person advisory board with representatives from the growing industry, the public garden sector, and university-based research and extension faculties.
The advisory board will meet again in June 2016 to determine a list of targeted pathogens and to establish protocols for combating viruses that have negative impact on the rose industry. It is anticipated that Rose mosaic virus will be among the top priorities for elimination from rose nursery stock. Foundation Plant Services at University of California, Davis is currently conducting virus testing and elimination for roses. To read more about the rose clean-up process, see the article by Dr. David Zlesak in the May 2015 issue of The American Nurseryman at
“The best way to ensure positive impact is for rose industry members to take advantage of the NCPN-R resources and use clean stock for propagation,” states Dr. David Zlesak, rose breeder and Associate Professor of Horticulture, University of Wisconsin-River Falls.