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Rose Rosette Disease Workshop and In-service Training

The recent discovery of rose rosette disease (RRD) in Florida threatens the State’s $20 million rose nursery industry as well as retail sales and landscape use. RRD is caused by rose rosette virus that is vectored by an eriophyid mite. Already widespread in the Upper South and northwards, this disease affects most rose species and cultivars. Symptoms include thorn and shoot proliferation (“witches’ brooms”), elongated reddened leaves, and distorted flower buds ultimately leading to plant death.

This workshop will review current knowledge about RRD, describe management strategies utilized in Tennessee and discuss potential options for breeding rose resistance to RRD.

Date: Wednesday, March 19th, 2014

Location: NFREC, University of Florida, 155 Research Road, Quincy, FL 32351

Audience: This program is oriented to commercial growers, professional landscape personnel, professional scouts and county Extension faculty.

Pesticide and FNGLA CEUs are applied for.


Please register at this EventBrite webpage:   or by calling Charlene Cupp Kinch at 850-875-7101.

County faculty: In addition to EventBrite, please also register through IFAS for in-service training IST # 30827 at

Location: University of Florida/IFAS North Florida Research and Education Center  155 Research Rd. Quincy, FL 32351 850.875.7100



This Pest Alert notification was authored by: Dr. Mathews L. Paret and Dr. Gary Knox.

Please contact Dr. Paret or Dr. Knox if you have questions about this opportunity.

Dr. Mathews L. Paret, Assistant Professor, Plant Pathology
NFREC, University of Florida
155 Research Road, Quincy, FL 32351
850-875-7154 (phone) 850-875-7188 (fax)

Dr. Gary Knox, Professor, Environmental Horticulture
NFREC, University of Florida
155 Research Road, Quincy, FL 32351
850-875-7162 (phone) 850-875-7188 (fax)

Funding for this program was provided by the University of Florida/IFAS Dean for Research and the FNGLA Endowment Fund. Special thanks to Star Roses and Syngenta Corporation for sponsoring lunch and refreshments. Extension faculty participation is funded by the University of Florida/IFAS Dean for Extension.

Program (all times are Eastern):

10.00 a.m. Introduction, Ben Bolusky, Director, Florida Nursery Growers and Landscape Association

10.10 a.m. Overview of the Shrub Rose Industry, Gary Knox, NFREC, University of Florida

10.30 a.m. What you need to know about Rose Rosette Virus and Emaraviruses, Carlye Baker, Division of Plant Industry, FDACS & Binoy Babu, Post-Doctoral Fellow, NFREC, University of Florida

10.50 a.m. What you need to know about Eriophyid mites Phyllocoptes fructiphilus & Rose Rosette Disease, Jennifer Kaufman & Marjorie Hoy, Entomology & Nematology Department, University of Florida

11.10 a.m. The Florida situation on Rose Rosette Disease, Mathews Paret, NFREC, University of Florida & Tim Schubert, Division of Plant Industry, FDACS

11.30 a.m. Key aspects Scouts should know about Rose Rosette Disease: Quarantine facility visit for observation of symptoms on roses, Alex Bolques & Matt Orwat, University of Florida Cooperative Extension

12.30 p.m. Lunch

1.15 p.m. The Tennessee Experience on Rose Rosette Disease and Disease Management Mark Windham, University of Tennessee

2.15 p.m. Potential Options for Breeding Roses for Resistance to Rose Rosette Disease David Byrne: Texas A & M

3:15 p.m. Break

3.30 p.m. Regulatory aspects in Florida, Tim Schubert, Division of Plant Industry, FDACS

3.50 p.m. Concluding remarks & Program evaluation, Mathews Paret & Gary Knox