Open Access Research Paper Views (366) Download (30) Different growing substrates affect Periwinkle’s (Catharanthus roseus L.) growth and flowering Ali Khanzadeh, Davood Naderi J. Bio. Env. Sci.6( 6), 179-186, June 2015. Key: Flower qualityGrowing mediaPeriwinkle (Catharanthus roseus L.)Vegetative growth Details