An expert rosarian offers advice on how to block or minimize powdery mildew, black spot, rust and more in San Diego gardens.

Roses do not have thorns; they have prickles. But there ARE “thorns” in the rose garden. Their names are botrytis, black spot, rust, downy mildew, anthracnose and cerospora leaf spot. They are all ...

A sycamore is a grand, stately native tree with attractive, peeling white-and-gray bark and broad, shady leaves. Sadly, sycamores are sometimes affected by a disfiguring fungal disease called ...

Anthracnose, a fungal disease affecting maple trees, is prevalent in Greater Columbus due to the cool, wet spring. The disease causes brown leaf spots, curling leaves and premature leaf drop, but ...

A pivotal study has shed light on the intricate mechanisms of nonhost resistance (NHR) in plants, a critical defense against a broad spectrum of pathogens. By identifying and characterizing four novel ...

Newly emerged maple leaves coupled with the recent cool, rainy weather provide perfect conditions for a common spring fungal disease called maple anthracnose. You must be logged in to rate. Click any ...

Anthracnose is a common spring disease on maple trees common in the landscape including red (Acer rubrum), silver (Acer saccharinum), sugar (Acer saccharum) and Japanese (Acer palmatum) maples.