Upcoming PRS Events


Rose Rosette Disease: An Update - Sunday March 25, 2018, at 2:00 pm at the US National Arboretum Auditorium

2018 PRS March Program Flyer

We have all seen the unsightly stands of Knockout Roses planted in median strips and occasionally, our home gardens, that have strange, deformed stem and leaf configurations.  This anomaly, known as Rose Rosette Disease, attacks our hybrid teas, climbers, shrubs and all other types of roses.  Join The Potomac Rose Society at the US National Arboretum to hear Dr. Mark Windham, a leading researcher on Rose Rosette, and get the most recent update on this disease that is a threat to the gardens of all rose lovers, along with Recommended Rose Varieties for Disease Resistance.

DR. MARK WINDHAM will discuss current research being conducted on Rose Rosette Disease (RRD), as well as the latest research identifying disease resistant varieties. The American Rose Society Research Endowment Trust identifies Rose Rosette Disease as the greatest threat to the future of commercial and recreational growth, and the enjoyment of roses. In 2012, ARS selected Dr. Windham to head a three-year study about the management of RRD. The objectives were to determine how rosarians manage RRD in their gardens and identify best practices
for RRD, besides eliminating plants with symptoms. Dr. Windham also believes that roses have lost popularity due to growing public aversion to the regular use of pesticides in home gardens and has therefore been developing a list of roses that homeowners can successfully grow without reliance on chemical control tactics. Rose Rosette will continue to be a threat to our home gardens for years to come. In a grant fully funded by the USDA National Institute of Food and Agriculture’s Specialty Crop Research Initiative, Dr. Windham is included in a group of 18 scientists concerned with Rose Rosette research (housed at Texas A & M), that continues to lead research on Rose Rosette Disease.

The National Arboretum is located at on 412 acres at 3501 New York Ave NE, Washington, DC 20002.

Join the Potomac Rose Society for free entry into this event. Membership is $15. Join us for refreshments and conversation after the program.

PRS Members: FREE
FONA Members: $10.00
Non-Members: $12.00

3rd Annual Mid-Atlantic Symposium on Disease-Resistant Roses

Featuring Paul Zimmerman, an internationally-recognized rose expert

Sunday, May 6, 2018

Registration begins at 12:30. Program from 1:00 to 5:00 pm
Brookside Gardens Auditorium, Silver Spring, Maryland

1:00  Opening Remarks
1:15 Paul Zimmerman Keynote
2:30 Break
2:45 Panel: Right Rose, Right Place
4:00 Refreshments
4:30 Brookside Rose Garden Tour

Paul Zimmerman’s keynote will cover creating the conditions to establish and maintain healthy garden roses without the use of synthetic chemicals. The Right Rose, Right Place panel will pose and answer questions about which roses will perform effectively under specific conditions, such as low light, poor drainage, tight spaces, etc. in the District, Maryland and Virginia.

Past PRS Events

2nd Annual Mid-Atlantic Symposium on Disease Resistant Roses

Featuring Gaye Hammond

Saturday, June 3, 2017, 1:00 pm – 5:00 pm
Silver Spring Library
900 Wayne Ave., Silver Spring, MD
3rd Fl. Meeting Rooms 1 and 2

Gaye Hammond
Gaye Hammond, nationally-recognized rose expert and contributor to The Sustainable Rose Garden—A Reader in Rose Culture. Photo by Carol Edwards.

Have you ever wanted to grow beautiful roses, but thought that they were too difficult? Attendees at this Symposium learned that disease-resistant roses are the answer. These gorgeous, easy care roses will thrive in the DC Metropolitan area. If you can grow weeds, you can grow these roses!

Gaye Hammond is a nationally recognized consulting rosarian and past President of the Houston Rose Society, the largest local rose society in the United States with over 1,000 members. She has served on their Board of Directors for almost 20 years and is a Life Member and Steward of the American Rose Society. She is also a member of the Garden Writers Association and special section editor of American Rose magazine.

Gaye has been the study liaison between the Houston Rose Society and Texas AgriLife Extension in connection with the Earth-Kind Rose Research Program, a scientifically significant research study that was originally designed to identify the most carefree and disease resistant roses that would grow in Southern gardens.

Pat Shanley
Pat Shanley, ARS President. Photo by Carol Edwards.

This three-part afternoon program featured:

  • Gaye Hammond spoke on Easy Care Roses
  • American Rose Society President, Pat Shanley, highlighted the importance of the American Garden Rose Selection program and endorsed disease-resistant rose culture
  • A panel on Growing Roses Without Chemicals in the DC Metro Area, and Resources for Disease Resistant Roses

Please Show Us Your Garden

Using visuals, Tina Hochberg, Joe Covey, and Reed Abrahamson, all  members of the Potomac Rose Society, discussed the evolution of their home gardens, featuring their experiences in adding and maintaining roses. Presenters included examples of personal successes and challenges, as well as plans for the future. In this popular annual presentation, participants picked up tips for successfully beautifying their DMV area garden.

Rose Tourism Part I: Great Gardens of North America

American Rose Society Colonial District Vice Director Ray Shipley provided a wonderful travelogue of gardens worth visiting. Ray and his wife Marie have traveled to nearly every state in the country, as well as four Canadian provinces, to visit some of the finest gardens on the continent. In addition to growing 220 roses in his own garden, Ray is Chair of the Colonial District Consulting Rosarians, Ray is also a member of the Potomac Rose Society, the Arlington Rose Foundation, The Maryland Rose Society and the Shenandoah Rose Society; and was recently awarded the American Rose Society's 2017 Silver Medal in recognition of his activities with the Colonial District. At the conclusion of his presentation, Ray presented Lou Giacchino a District Consulting Rosarian of the Year Award. Lou is Vice President of PRS.

The War on the Roses: Beneficial Insects are your Allies in the Garden

With Michael J. Raupp, Ph.D.

Thursday, April 27, 2017, 7:00 pm
Silver Spring Library
900 Wayne Ave., Silver Spring, MD 20910

PRS was delighted to welcome University of Maryland Professor Mike Raupp—”The Bug Guy”—a nationally-recognized expert who is frequently called upon by CNN, MSNBC, NPR, and other networks, as well as being a guest on late night TV. Professor Raupp presented a fascinating advocacy for Integrated Pest Management (IPM) in the rose garden… and the very next day, he was interviewed on WTOP!

PRS Meets the Flower Whisperer!

Jeff King and Jeffery Serafini from Potomac Floral Wholesale

by Lisa Mundy

Jeffery Serafini
Jeffery Serafini presents his beautiful cut roses.

When was the last time you had an opportunity to learn from a true expert about any and everything relating to roses and other flowers? PRS members were fortunate enough to do just that on January 22, 2017, when Jeff King and Jeffery Serafini from Potomac Floral Wholesale presented to our group. They brought with them hundreds of stems of their most beautiful rose varieties for us to examine and enjoy, a sight for sore eyes for rose lovers in the middle of winter!

Potomac Floral.
A full house was on hand to hear from Potomac Floral.

With over 30 years in the flower business, Mr. Serafini, Purchasing Manager at Potomac Floral, is a veritable encyclopedia when it comes to roses. He patiently answered all of our questions, incorporating many interesting anecdotes gained from his vast experience.

Jeff King, Public Relations and Sales Manager, invited us to visit their warehouse in Silver Spring to see all of the many rose varieties they have to offer. Everyone enjoyed Mr. Serafini's outstanding presentation, and we look forward to putting all of his excellent tips to use this season, to better enjoy the beauty of roses in our homes and in our gardens.

Thank you, Potomac Floral!

Jeffery Serafini and Jeff King.
Jeffery Serafini and Jeff King.

In Good Company: The Roses and Companion Plantings of the Smithsonian’s Katherine Dulin Folger Rose Garden

Speaker: Shelley Gaskins, Smithsonian Gardens Horticulturist

Sunday, November 20, 2016, 2:00 pm
The Behnke Nurseries Co.
11300 Baltimore Ave., Beltsville, MD

The Katherine Dulin Folger Rose Garden. Courtesy of Smithsonian Gardens.
The Katherine Dulin Folger Rose Garden. Courtesy of Smithsonian Gardens.

Ms. Gaskins discussed the newly reopened Kathrine Dulin Folger Rose Garden. The exciting, year-long expansion and renovation project, was presented to a standing-room-only crowd at the Behnke Nursery. The new Kathrine Dulin Folger Rose Garden will incorporate healthy rose varieties along with companion plantings to attract beneficial insects. It is designed to be a healthier garden, providing four seasons of interest with less reliance on pesticides.

Please visit the Smithsonian Gardens blog and search the keyword "Folger" to learn more.

Shelley Gaskins (center) flanked by rose enthusiasts after her lecture.
Shelley Gaskins (center) flanked by rose enthusiasts after her lecture.

Other Regional Rose Events

Top photo of Rose de Rescht by Rich Baer