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Baby Pete™ Lily Of The Nile Agapanthus praecox ssp. orientalis ‘Benfran’ P.P. #21,705 Monrovia makes it easy to create a beautiful garden. For a profusion of bright blue fl owers, our exclusive Baby Pete™ Lily of the Nile is stunning in a container or planted in a perennial border. It is shorter and more compact, making it ideal for a smaller garden. This maintenance-free beauty will provide abundant color from May to September. All Monrovia plants are regionally grown in our custom-blended, nutrient-rich soil and tended carefully to ensure the healthiest plant. We work with the best breeders around the world to fi nd improved plant varieties that perform better in the garden. Plus, consumers can now order plants on shop.monrovia.com and have them sent to your garden center for pick up! Call your local Monrovia sales representative for details and to enroll in the program. Insta contents Volume 94, Number 5 . September / October 2015 FEATURES DEPARTMENTS 5 NOTES FROM RIVER FARM 6 MEMBERS’ FORUM 8 NEWS FROM THE AHS 2015 recipients of award for best children’s gardening books, winners of 2015 TGOA-MGCA photo contest, Seed Exchange donation deadline reminder, applications now open for the AHS’s Wilma L. Pickard Horticultural Fellowship. 10 AHS MEMBERS MAKING A DIFFERENCE Scott Zanon. 38 GARDEN SOLUTIONS Dividing herbaceous perennials. 40 HOMEGROWN HARVEST Kale—a vegetable superstar. page 28 42 TRAVELER’S GUIDE TO GARDENS McCrory Gardens, South Dakota. 12 SEASONAL BOOKENDS BY RITA PELCZAR 44 GARDENER’S NOTEBOOK Get more bang for your buck with these double-duty plants that sparkle in both fall and spring. Smithsonian to catalog genetic diversity of the world’s plants, astronauts harvest lettuce 18 INDOOR PLANTS AND AIR QUALITY BY AMY G. MCDERMOTT in space, USDA announces A number of common houseplants are widely touted as natural development of new black- page 42 air purifi ers, but does research bear this out? fruited blueberry, California nurseries adapt to drought, Chicago Botanic Garden evaluated best 22 PLANTSMAN EXTRAORDINAIRE JOHN FAIREY BY BILL NOBLE plants for rooftop gardens, legacy of This visionary garden creator and plant explorer has had a sig- nurseryman Bruce Usrey. nifi cant infl uence on the plant palette and design aesthetic of 48 GREEN GARAGE southern gardens. Season-extending garden products. 28 HOW TO GROW A TRULY “GREEN” LAWN BY KRIS WETHERBEE 50 BOOK REVIEWS You don’t need to use synthetic fertilizers or pesticides to have a Pawpaw, Women Garden Designers, and healthy, attractive lawn. How Plants Work. Special focus: Design ideas. 34 GROWING GOOD KIDS THROUGH GARDENING 54 REGIONAL HAPPENINGS BY VIVEKA NEVELN The International Junior Master Gardener Program takes an 58 PRONUNCIATIONS AND HARDINESS integrated approach to improving children’s lives through plants. AND HEAT ZONES 60 PLANT IN THE SPOTLIGHT ON THE COVER: Developed at Johnson’s Nursery in Menomonee Falls, Wisconsin, ‘JN Select’ Red- Yellowroot (Xanthorhiza simplicissima). wing® is a selection of American cranberrybush viburnum (Viburnum trilobum) that features white LEFT: KARRIE JENKS, COURTESY OF IN HARMONY SUSTAINABLE LANDSCAPES. LEFT: KARRIE JENKS, COURTESY OF IN HARMONY SUSTAINABLE LANDSCAPES. RIGHT: CHRIS SCHLENKER, COURTESY OF MCCRORY GARDENS fl owers in spring, followed by red berries, and red fall foliage. Photograph by Bill Johnson 61 2016 SEED EXCHANGE DONOR FORM September / October 2015 3 Free App AMERICAN HORTICULTURAL SOCIETY HOMEGROWN Making America a Nation of Gardeners, a Land of Gardens With Bonnie Plants Board of Directors CHAIR Amy Bolton Falls Church, Virginia FIRST VICE CHAIRMAN Jane Diamantis McDonald, Tennessee SECOND VICE CHAIRMAN Mary Pat Matheson Atlanta, Georgia TREASURER J. Landon Reeve, IV Woodbine, Maryland IMMEDIATE PAST CHAIR Harry A. Rissetto, Esq. Falls Church, Virginia EXECUTIVE COMMITTEE Henrietta Burke Alexandria, Virginia Marcia Zech Mercer Island, Washington Skipp Calvert Alexandria, Virginia Q Tim Conlon Dubuque, Iowa Q Gay Estes Houston, Texas Nancy Hargroves Manakin Sabot, Virginia Q Tom Johnson Washington, D.C. Q Louis B. Lynn Columbia, South Carolina Nancy Ross Englewood, Florida Q Holly Shimizu Glen Echo, Maryland Q Ed Snodgrass Street, Maryland Erich Veitenheimer Alexandria, Virginia EXECUTIVE DIRECTOR Tom Underwood PRESIDENT EMERITUS Katy Moss Warner President’s Council The President’s Council is comprised of dedicated members whose annual support makes many of the Society’s programs possible, from youth gardening activities to horticultural awards programs. FOUNDER’S CIRCLE ($25,000+) Mr. and Mrs. George Diamantis Q Mr. and Mrs. Harry A. Rissetto Q Mr. and Mrs. Klaus Zech CHAIRMAN’S CIRCLE ($10,000–$24,999) Mr. and Mrs. Bill Barnett Q Mrs. Kurt Bluemel Q Mrs. Elisabeth C. Dudley LIBERTY HYDE BAILEY CIRCLE ($5,000–$9,999) Mrs. Leslie S. Ariail Q Ms. Amy Bolton and Mr. Philip Schoene Q Mr. and Mrs. Skipp Calvert Q Mr. James R. Cargill Q Mr. Mark Olson Q Mr. and Mrs. J. Landon Reeve, IV Q Mrs. Susie Usrey Q Ms. Katy Moss Warner bonnieplants.com/app HAUPT CIRCLE ($2,500–$4,999) Mrs. Sandra L. Address Q Mr. and Mrs. Nathan Bachman Q Ms. Petra Burke-Ramirez Q Mr. and Mrs. Timothy Conlon Q Mr. and Mrs. Andy Daniel Q Mr. Joseph Errington and Mr. William Pullen Q Mr. and Mrs. Carl Estes Q Dr. Amy Goldman Fowler Q Mr. and Mrs. Joel Goldsmith Q Ms. Christina Grady and Mr. Thomas Gibian Q Dr. and Mrs. William O. Hargrove Q Mr. and Mrs. Thomas E. Johnson Q Dr. and Mrs. Louis B. Lynn Q Mrs. Shirley Ann Nicolai Q Dr. David D. Parrish Q Ms. Katherine Ward COUNCIL MEMBER’S CIRCLE ($1,000–$2,499) Ms. Kathleen W. Arnold Q Mr. and Mrs. David Asaibene Q Mr. Dale L. Bachman Q Mr. and Mrs. Robert Baillie Q Mr. and Mrs. Charles Barnes III Q Dr. and Mrs. William E. Barrick Q Mr. and Mrs. Richard P. Beck Q Mrs. Katherine McKay Belk Q Mrs. George P. Bissell, Jr. Q Dr. Sherran Blair and Mr. Roger Blair, Esq. Q Mr. and Mrs. Michael T. Bradshaw Q Ms. Donna Brown Q Mr. and Mrs. Taylor Burke, III Q Mr. and Mrs. Carson Calloway, Jr. Q Dr. and Mrs. Joseph P. Cameron Q Ms. Mary Ann Carey Q Mr. Stan Chambers Q Ms. Cynthia Cope Q Ms. Audney Cosand Q Mr. Larry L. Deaven Q Ms. Katherine B. Edwards and Mr. John A. Ronveaux Q Ms. Megan Evans and Mr. Howard M. Tucker Q Ms. Inger Fair Q Mr. and Mrs. Gary Fine Q Dr. and Mrs. John A. Floyd, Jr. Q Ms. Elisabeth French Q Mr. and Mrs. A.M. Gellman Q Mr. and Mrs. Michael Grant Q Dr. and Mrs. Thomas B. Hall, III Q Mr. Clark Halstead Q Mr. and Mrs. Herbert F. Hargroves Q Mrs. Martha Harris Q Ms. Laura Hartman Q Ms. Rebecca Hartness Q Ms. Catherine M. Hayes Q Ms. Grace M. Hennes Q Ms. Nancy Hockstad Q Mr. and Mrs. Albert Huddleston Q Mr. Philip Huey Q Mr. and Mrs. Ridgely Huntt Q Mrs. Rose Johnston Q Mr. and Mrs. Thomas L. Keck Q Ms. Patricia Kitchings Q Mr. and Mrs. Charles Kittrell Q Ms. Patricia Leddy Q Mrs. Carolyn Marsh Lindsay Q Ms. JoAnn Luecke Q Mrs. Dorothy W. Marston Q Mr. and Mrs. James Masterson Q Ms. M. Terry McConnell Q Mr. and Mrs. Murray McGrew Q Mr. and Mrs. John McMurtrie Q Mr. and Mrs. Walter Montgomery, Jr. Q Mr. and Mrs. Peter Morris Q Mrs. Rosalie J. Morris Q Dr. and Mrs. David E. Morrison Q Mr. James R. Moxley, Jr. Q Mr. and Mrs. Ben Norwood Q Mr. and Mrs. Al Osman Q Ms. Julie Overbeck Q Ms. Johnnie Patricia Painter Q Ms. Melinda Papp Q Mr. and Mrs. Bill Paternotte Q Ms. Allison Porter Q Mrs. Lynn C. Rhomberg Q Ms. Stephanie L. Rodden and Mr. John Cienki Q Ms. Nancy Ross Q Ms. Rachael A. Rowland Q Mr. Witney Schneidman Q Mr. and Mrs. Thomas Sedler Q Mr. Carroll L. Shry Q Mr. and Mrs. Charles H. Smith, Jr. Q Ms. Kathleen A. Smithgall Q Mr. Joseph B. Tompkins, Jr. Q Mr. and Mrs. Harry Tunis Q Mr. and Mrs. Tom Underwood Q Mrs. Angela M. Vikesland Q Mr. and Mrs. Robert D. Volk Q Mr. and Mrs. Charles F. Walton Q Ms. Elizabeth M. Wehrle Q Mrs. Corinne Winburn Q Mrs. Dudley B. White Q Mr. and Mrs. Donald Winship Q Dr. Dorothy Yang and Mr. Ray Carlsen HONORARY PRESIDENT’S COUNCIL (in memoriam) Ms. Louise Fruehling Q Mrs. Enid Haupt Q Mrs. John A. Lutz Q Mr. and Mrs. Bruce Miller Ms. Wilma L. Pickard Corporate Members Bonnie Plants Q The Care of Trees Q Chapel Valley Landscape Company Q Corona, Inc. Q The Espoma Company Q Monrovia Q Osmocote Q OXO Horticultural Partners America In Bloom Q Bellingrath Gardens & Home Q The Colonial Williamsburg Foundation Q Cox Arboretum Metropark Q Friends of Fellows Riverside Gardens Q The Gardeners of America/Men’s Garden Clubs of America Q The Omni Homestead Q Inniswood Garden Society Q University of Nebraska-Lincoln Q Wegerzyn Gardens Foundation 4 the American Gardener The American NOTES CFROM RIVER FARM GARDENER EDITOR David J. Ellis MANAGING EDITOR AND ART DIRECTOR Mary Yee ASSOCIATE EDITOR Viveka Neveln NSURING THAT the love of plants and gardening is passed on to the next EDITORIAL INTERN generation of gardeners is a core part of the American Horticultural Society’s Amy G. McDermott mission. It not only yields rewards on a personal level, but also translates into CONTRIBUTING EDITOR E positive things for our Rita Pelczar communities. Here at CONTRIBUTING WRITER River Farm, for exam- Carole Ottesen ple, we are constantly EDITORIAL ADVISORY BOARD reminded of the value CHAIR Ethne Clarke gardens offer to chil- Colorado Springs, Colorado dren when we hear Linda Askey the delighted squeals Birmingham, Alabama of wonder from our Julie Chai Mountain View, California youngest visitors.