Powdery mildew, a fungal disease ... or apply an insecticidal soap. Lastly, as the Aster blooms begin to fade and the flowers start to brown naturally, consider deadheading the brown flowers.

A new North Carolina State University study pinpoints the worldwide spread of a fungus that taints blueberry plants with powdery mildew, a disease that reduces blueberry yield and encourages the ...

In this study, powdery mildew was first spotted outside North America on a farm in Portugal in 2012, as noted by a co-author of Bradshaw's who was employed by a major berry company.