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

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

Roses are known to be thirsty plants that thrive with regular watering, particularly during the warmer months. Deep and consistent watering ensures they have sufficient moisture for growth and ...

Rose black spot is the most common problem with roses in the UK and can completely defoliate a bush, but one simple practice can keep it at bay.

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

SHREVEPORT, La. - Roses may be the queens of Southern gardens, but even royalty can fall victim to common foes. One of the most widespread and stubborn problems local gardeners face is black spot, a ...

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' diseases ...

Lisa Lawhead talks about fall plant diseases, and Bill Dickerson demonstrates fall rose care. This week on The Family Plot: Gardening in the Mid-South, Tennessee Department of Agriculture Plant ...