From "Les Amis des Roses", January-June 1941, p. 24: Cycle of different culture of roses for cut flower - hybrid perpetuals of the type Ulrich Brunner, Frau Karl Druschki. [First row: outdoor production; second and third rows: unheated glasshouse; row four: heated glasshouse] Courtesy of the Archives of Roseraie du Val de Marne
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From "Les Amis des Roses", January-June 1941, p. 24: Cycle of different culture of roses for cut flower - hybrid perpetuals of the type Ulrich Brunner, Frau Karl Druschki. [First row: outdoor production; second and third rows: unheated glasshouse; row four: heated glasshouse]
Courtesy of the Archives of Roseraie du Val de Marne