Polyanthus, [53], [57], [100], [106], [132], [224], [231]

Poppies, Californian, [57], [177];
—Iceland, [57], [147], [196], [235];
—Oriental, [106], [211], [234];
—Shirley, [57], [66], [113], [150], [171]

Primroses, [72], [248]

ROCKET, [236]

Roses, [74];
—Crimson Rambler, [74], [128], [214];
—Gloire de Dijon, [74], [129], [187], [213];
—Reine Marie Hortense, [74], [128];
—William Allen Richardson, [74], [128], [214];
—cutting, [77];
—Suckers, [79]

Rudbeckias, [195]

SAINT-FOIN, [151]

Salpiglosis, [57], [175]

Salvias, [184]

Scabious, [57], [142], [183]