Rudbeckia fulgida (orange coneflower) is an herbaceous species (Asteraceae) grown in full sun in flower beds and borders in gardens. In the summer of 2009, a previously unknown leaf spot was observed on R. fulgida plants in three private gardens located near Biella (northern Italy). Leaves of
Rudbeckia hirta L. var. pulcherrima Farw. (synonym R. bicolor Nutt.), known as the black-eyed Susan, is a flowering plant belonging to the family Asteraceae. The plant is native to North America and was introduced to Korea for ornamental purposes in the 1950s. In July 2011, a previously unknown leaf
Rudbeckia fulgida (common name orange coneflower) is an herbaceous perennial (Asteraceae) grown in full sun in perennial borders in gardens. At the end of the summer of 2007, in a public garden located in Turin (northern Italy), symptoms of vascular wilt and stunting were observed on approximately
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