(大井道夫, 19222007) Kate Orff (b. ) Orishimo Kichinobu (折下吉延, 18811966) Ōta Kenkichi (太田謙吉, 18911963) Ōtsuka Moriyasu (大塚守康, b. 1942) T. R. Otsuka (1868) George H. Otten (18891978) Piet Oudolf (b. 1944) Ōya Reijō (大屋霊城, 18901934) Ozawa Keijirō (小沢圭次郎, 18421932) (19332010) Shōichi Ohshima (大嶋昭一) Ryūji Ohya (大矢隆治) Zenzaburō Ohgane (大金善三郎) Kiyoshi Ohneda (大根田清) Ken Okinaka (冲中健) P Francisco Páez de la Cadena (b. 1951) Raymond E. Page (18951992) Russell Page (19061985) Cary Millholland Parker (19022001) André Parmentier (17801830) Maria Teresa Parpagliolo (19031974) Samuel Parsons (18441923) Anthony du Gard Pasley (19292009) Elizabeth Greenleaf Pattee (18931991) Harriet Pattison (b. 1928) Joseph Paxton (18031865) Theodore Payne (18721963) Dan Pearson (b. 1964) Diane Pearson (19082002) Elbert Peets (18861968) Antonio Perazzi (b. 1969) Sara Peschel Michiel Pesman (18871962) Harold Peto (18541933) Eduard Petzold (18151891) (b. 1968) Carl Francis Pilat (18761933) Cecil Pinsent (18841963) Fredrik Magnus Piper (17461824) Charles A. Platt (18611933) Lorena Ponce de León (b. 1976) Bremer Whidden Pond (18841959) Janet Meakin Poor (19292017) Pietro Porcinai (19101986) Bruce Porter (18651953) Joe A. Porter James Sturgis Pray (18711929) Antoine Predock (b. 1936) Uvedale Price (17471829) Militsa Prokhorova (19071959) Allain Provost (b. 1938) Lindsay Pryor (19151998) Hermann von Pückler-Muskau (17851871) Charles Punchard Jr. (18851920) R (18591935) François Racine de Monville (17341797) Joseph-Jacques Ramée (17641842) Simon Rastorguev (b. 1981) Elsa Rehmann (18861946) (18431924) Humphry Repton (17521818) Heinrich Ruzzo Reuss (19501999) Gonçalo Ribeiro Telles (19222020) Jane Silverstein Ries (19092005) Florence Bell Robinson (18851973) William Robinson (18381935) Elizabeth Barlow Rogers (b. 1936) Marius Røhne (18831966) Lanning Roper (19121983) James C. Rose (19131991) Walter Rossow (19101992) Rudolph Rothe (18021877) Friedrich Leo von Rottenberger (18721938 (18911981) Margie Ruddick Mien Ruys (19041999) Yūichi Ryūgō (流郷祐一) S Vita Sackville-West (18921962) Merel S. Sager (18991982) Katsuo Saito (斉藤勝雄, 18931987) Saitō Kōji (斉藤浩二, b. 1947) Sakakibara Hachirō (榊原八朗, b. 1945) Sakata Shizuo (坂田静夫) (19351975) Nagao Sakurai (18961973) Lucinda Sanders Sano Enshū (佐野越守) Sano Tansai (佐野旦斎) Sano Tōemon (佐野藤右衛門, b. 1928) Ildefonso P. Santos Jr. (19292014) Henry Winthrop Sargent (18101882) Maud Sargent (18991992) Hideo Sasaki (19192000) Sasaki Yōji (佐々木葉二, b. 1947) Satō Akira (佐藤昌, 19032003) John Hennessy Saul (18191897) William Saunders (18221900) Herbert R. Schaal (b. 1940) Bengt Schalin (18891982) Mario Schjetnan (b. 1945) Rainer Schmidt (b. 1954) Camillo Karl Schneider (18761951) Alina Scholtz (19081996) Richard Schomburgk (18111891) Edith Schryver (19011984) E. O. Schwagerl (18421910) Martha Schwartz (b. 1950) Friedrich Ludwig von Sckell (17501823) Geraldine Knight Scott (19041989) Thomas Warren Sears (18801966) J. J. Sexby (18471924) Peter