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TheThe AmericanAmerican GARDENERGARDENER The Magazine of the American Horticultural Society March/AprilMarch/April 20042004 spring into the season with Columbines Landscaping with Roses $4.95 www.ahs.org.ahs.org 03> The New American Kitchen Garden Creative Pruning 0173361 64751 Peony Paradise in Pennsylvania Let us lead you down the garden path FOR EXPERT ADVICE, TURN TO THESE 2004 GARDEN TITLES BY & Available at your favorite bookseller. Or visit us online at www.sunsetbooks.com contents Volume 83, Number 2 . March / April 2004 DEPARTMENTS 5 NOTES FROM RIVER FARM 6 MEMBERS’ FORUM 7 NEWS FROM AHS Online SMARTGARDEN™ course to debut, AHS celebrates National Garden Month, AHS co-sponsors “Magic of Landscaping” program at Epcot, Friends of River Farm Spring Plant Sale at River Farm. 10 AHS 2004 GREAT AMERICAN GARDENERS NATIONAL AWARD WINNERS Meet the recipients of this year’s awards. page 24 44 CONSERVATIONIST’S CORNER Collaborative efforts to save the bracted twistflower in Texas. FEATURES 47 GARDENER’S NOTEBOOK Epimediums for the Midwest, teaching plants 14 HOOKED ON COLUMBINES BY ROBERT NOLD self-defense, New England Wild Flower With their brightly colored flowers and graceful foliage, plants in Society expands nursery, Wild Ones the genus Aquilegia can quickly become an obsession. organization turns 25, new tree-planting research, the legacies of Charles Lewis and Richard Hutton. 20 CREATIVE PRUNING BY CAROLE OTTESEN Cutting back certain herbaceous perennials and grasses at the right 50 EVERYDAY GARDEN SCIENCE time will yield shapelier, more floriferous plants. The good and bad of chemicals. page 50 24 LANDSCAPING WITH ROSES BY MARY YEE It’s time to take roses out of the rose garden and explore the many ways they can be used in the home landscape. 30 KITCHEN GARDENS—AMERICAN STYLE BY KRIS WETHERBEE Today’s kitchen gardens are bringing new excitement to American landscapes and appetites alike. 52 BOOK REVIEWS Plant Discoveries, Rock Garden: Design and 36 PEONYLAND: A DREAM COME TRUE BY GAY KIMELMAN Construction, and So You Want to Start a A father and son growing Chinese tree peonies in the fields of Nursery. Pennsylvania discover the trials and rewards of the nursery business. Special focus: Plant references. 57 REGIONAL HAPPENINGS 42 THINK YOU HAVE DESIGN PROBLEMS? BY TRES FROMME Exploring the question of “what is design?” It’s probably not 61 HARDINESS AND HEAT ZONES what you think it is. AND PRONUNCIATIONS 62 PERFECT PLANT COMPANIONS ON THE COVER: The nodding white flowers of Aquilegia flabellata ‘Alba’ rise from a clump of deli- A cottage-garden vignette from the TOP: KAREN BUSSOLINI; RIGHT: PHOTOESSENTIALS RIGHT: BUSSOLINI; KAREN TOP: cate blue-green foliage. Photograph by Alan and Linda Detrick Pacific Northwest. March / April 2004 3 AMERICAN HORTICULTURAL SOCIETY MEMBERSHIP BENEFITS 7931 East Boulevard Drive Alexandria, VA 22308-1300 (800) 777-7931 fax (703) 768-8700 www.ahs.org For general information about your membership or to report damaged magazines, call (800) 777-7931. Send change of address notifications to our mem- Making America a Nation of Gardeners, a Land of Gardens bership department at the address on the left. Mem- bership questions and change of address notification can also be e-mailed to [email protected]. PRESIDENT Katy Moss Warner THE AMERICAN GARDENER BOARD OF DIRECTORS OFFICERS 2003-2004 To send a letter to the editor, write to the address CHAIRMAN Kurt Bluemel Baldwin, Maryland on the left or e-mail to [email protected]. FIRST VICE CHAIRMAN Arabella S. Dane Boston, Massachusetts DEVELOPMENT SECOND VICE CHAIRMAN Valerie L. Thomas Alexandria, Virginia To make a gift to the American Horticultural Soci- SECRETARY Albin MacDonough Plant Baltimore, Maryland ety, call (800) 777-7931 ext. 115. TREASURER Christine Perdue Middleburg, Virginia GARDENER’S INFORMATION SERVICE (GIS) IMMEDIATE PAST CHAIR Jim Corfield Geneva, Illinois Have a gardening question? Call (800) 777-7931 ext. 131 GENERAL COUNSEL William A. Pusey or 124 from 10 a.m. to 4 p.m. Eastern time on week- PRESIDENT EMERITUS Dr. H. Marc Cathey days. Or e-mail questions to [email protected]. GREAT AMERICAN GARDENERS Leslie Ariail Alexandria, Virginia I Allan M. Armitage Athens, Georgia I William E. Barrick, Ph.D. Theodore, AWARD BANQUET Alabama I Katherine Bull Washington, D.C. I Peg Dunnigan Alexandria, Virginia. I Joel Goldsmith Gilroy, Join us on April 2, 2004, to honor the winners of California I Brian E. Holley Cleveland, Ohio I Natasha Hopkinson New York, New York I Robert Malesardi AHS’s 2004 annual awards, given to those who are Easton, Maryland I Melissa R. Marshall Pittsburgh, Pennsylvania I Carol C. Morrison Palatine, Illinois I Don making a significant difference in American garden- Riddle Davidsonville, Maryland I Felder Rushing Jackson, Mississippi I William Seale Alexandria, Virginia I ing. Call (800) 777-7931 ext. 121 for details. Jeanne Otis Shields Greenville, Delaware I Steven Still Hilliard, Ohio I Howard McK. Tucker Alexandria, Virginia I Susie Usrey Dayton, Oregon I Robert D. Volk San Marino, California THE GROWING CONNECTION Get your kids involved with this innovative educa- CORPORATE PARTNERS tional program in which they can experiment with The Care of Trees I DK Publishing I EarthBox I Kurt Bluemel, Inc. seeds that have gone into space in a NASA science bal- I Monrovia Thompson & Morgan loon. Visit www.ahs.org or call (800) 777-7931 ext. 121 for more information. AHS HORTICULTURAL PARTNERS America in Bloom I Center for Plant Conservation I Colonial Williamsburg Foundation Garden Symposium INTERN PROGRAM I Communities in Bloom I Cox Arboretum I Epcot International Flower & Garden Festival I Greater To receive an application for the Society’s Horticul- Gardens of the Washington Area I Horticulture Gardening Institute I International Master Gardener tural Intern Program, e-mail [email protected]. For in- Conference I Leonard Haertter Travel Company I Morris Arboretum I National Cherry Blossom Festival formation about the Editorial Intern program, e-mail I Oklahoma Horticultural Society I Summer Master Gardener Conference in East Lansing [email protected]. Intern application forms can also be downloaded from the River Farm area atwww.ahs.org. NATIONAL CHILDREN AND YOUTH GARDEN THE AHS PRESIDENT’S COUNCIL SYMPOSIUM (NCYGS) CHAIRMAN'S CIRCLE Mr. and Mrs. John H. Ariail, Jr. I Mr. and Mrs. Kurt Bluemel I Ms. Claire Burrows I Mr. and Mrs. Edward N. Cornell University in Ithaca, New York, is the setting Dane I Mr. Mark Garrison I Ms. Jill Hamilton I Mr. and Mrs. James S. Hutchinson I Mr. Robert E. Malesardi I Ms. Nancy for the 12th annual NCYGS, to be held July 29 to 31, Petersen I Mr. Phil Synder I Ms. Donnan C. Wintermute LIBERTY HYDE BAILEY ASSOCIATES Mr. A. Michael Gelman I Mr. and 2004. For more information, call (800) 777-7931, ext. Mrs. Mickey Lynch I Mr. and Mrs. Joseph L. Manson, III I Mr. and Mrs. Ken Mountcastle I The Honorable Lauralee M. Peters I 117 or visit www.ahs.org. Mr. W. R. Pickering I Jeanne Otis Shields I Ms. Katy Moss Warner HAUPT ASSOCIATES Mrs. Lynda A. Bachman I Dr. and Mrs. RECIPROCAL ADMISSIONS PROGRAM William E. Barrick I Ms. Judy Beyer I Mr. and Mrs. C. William Black I Mr. and Mrs. Robert L. Bogle I Mr. Richard C. and Mrs. Through this program, AHS members receive free Katherine Stark Bull I Dr. and Mrs. H. Marc Cathey I Mr. and Mrs. Louis Cordia I Mrs. Elisabeth C. Dudley I Ms. Karen Duvall and discounted admission to botanical gardens I Mrs. Richard W. Hanselman I Ms. Minako Henderson I Mrs. Carole S. Hofley I Col. and Mrs. Freeman E. Jones I Mr. and Mrs. throughout North America. Participating gardens are Robert E. Kulp, Jr. I Mr. and Mrs. Malcolm Matheson, Jr. I Mr. and Mrs. Harold McClendon, Jr. I Mr. and Mrs. Tom McGlade I listed in this year’s AHS Member Guide and also in Ms. Michele Richardson I Mr. Harry A. Rissetto, Esq. I Dr. and Mrs. George E. Staehle I Mr. and Mrs. Arnold Steiner I Mr. John the Membership area of our Web site. For more in- Wm. Thomas and Mrs. Valerie Thomas I Mr. Howard McK. Tucker and Ms. Megan Evans I Mr. and Mrs. W. Bruce Usrey I Mr. formation, call (800) 777-7931 ext. 127. and Mrs. Robert D. Volk PRESIDENT'S COUNCIL Mr. and Mrs. Richard C. Angino I Nancy J. Becker, M.D. I Mrs. Katherine McKay Belk-Cook I Mr. Phillip TRAVEL STUDY PROGRAM Bermingham I Mrs. George P. Bissell, Jr. I Ms. Sylvia Black I Dr. Sherran Blair I Count and Countess Peder Bonde I Mrs. Anne AHS members and friends can visit spectacular gar- Bucher I Mr. and Mrs. Cason Callaway, Jr. I Mrs. and Mr. Charles E. Carr I Mr. and Mrs. Charles R. Chandler I Mr. and Mrs. dens around the world through the Society’s exclu- James L. Corfield I Mr. and Mrs. Thomas Crawford I Mr. and Mrs. Edward Daisey I Mr. and Mrs. James F. Delano I Mr. and Mrs. sive arrangement with Leonard Haertter Travel. To Nicholas Demisay I Mr. and Mrs. Michael D. Dubke I Mrs. Beverley W. Dunn I Mrs. Maureen Ecke I Ms. Anita Ellis I Mr. and learn about upcoming trips, call (800) 777-7931 ext. Mrs. John H. Fitzpatrick I Dr. and Mrs. John A. Floyd, Jr. I Ms. Marguerite Peet Foster I Mr. Thomas B. Gentry I Ms. Dorothy 117 or visit the Events section of our Web site. Gillespie I Mr. and Mrs. Joel Goldsmith I Mr. and Mrs. David B. Gray I Mr. and Mrs. John H. Guy, IV I Mr. Gerald T. Halpin WASHINGTON BLOOMS! I Mrs. Richard W.