Powdery Mildew
Powdery mildew is a common fungal disease that effects many types of plants, and is fairly easy to manage. It causes poor growth and lower yields, but seldomly kills the plant. There are many different species of powdery mildew that cause the disease on many different species of plants. See list of species and their hosts below in "Plants Affected". Unlike many other fungal pathogens, it is able to flourish under warm, dry conditions, when competition (other fungi and bacteria) are not doing well, and doesn't require wet conditions to germinate.
Powdery mildew on Lavender Bergamot (Mondarda fistulosa)
