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 ...

Last year in one of your articles, you talked about rust disease on plants, and as I remember, you mentioned there was something we could do in the spring to help us protect our plants against this ...

CORVALLIS – Mild winter weather will most likely coax roses into bloom early, which means dealing with the usual diseases and pests earlier, too. When it comes to one of the country’s most popular ...

What do coffee, sugar, wheat, soy, eucalypts and paperbarks all have in common? They are all susceptible to parasitic rust diseases caused by fungi. Plant rust disease can easily be spotted by the ...