AGRICULTURAL AND FARM NEWS Aster yellows is a condition that affects many flowers including not only coneflower, but also asters, chrysanthemum, coreopsis, cosmos, daisy, dianthus, gladiolus, ...

Lastly, as the Aster blooms begin to fade and the flowers start to brown naturally, consider deadheading the brown flowers. This will not only keep the plants looking tidy but also encourage new ...

Aster yellows might be rare, but it can be expensive. The last big outbreak cost Prairie canola growers $400 million in yield losses, Trevor Wist of AAFC told Manitoba Ag Days 2025.