Aster yellows is a condition that affects many flowers including not only coneflower, but also asters, chrysanthemum, coreopsis, cosmos, daisy, dianthus, gladiolus, marigold, petunia, phlox ...
https://doi.org/10.2307/2435474 • https://www.jstor.org/stable/2435474 1. Aster yellows is a serious disease of the China aster, Callistephus chinensis Nees. It is ...
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