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

It can be scary when your plants are sickly. Some diseases can be managed while others are detrimental, so it's important to ...

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 ...

When powdery mildew pops up on your roses, here's get rid of this common plant disease fast. Powdery mildew appears as white or gray spots on roses, usually during warm, humid conditions. Catching ...

Does Triple 13 fertilizer cause black spot disease in roses? My Knock Out roses were really nice before I fertilized. Now ...

A BARGAIN staple which everyone has in their fridge is a highly effective treatment to banish black spots on your roses 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 ...

Find out how a gardener used a £1.20 full fat milk hack to save his rose plants from black spot - one of the 'most serious' ...

First off, I should have asked more questions.