Roses go through two years of testing by the American Society of Roses. Knock Outs tested so well that they thought they were ...

The spotted yellow leaves are the result of black spot disease. Knock Out roses, in general, are quite resistant (not immune) to black spot disease. During wet weather conditions, however, even ...

Insects and diseases are typically the biggest challenges related to roses. Roses go through a two-year rating testing process by the American Society of Roses. The test results of the Knock Out ...

Can you diagnose and suggest what to use? For some reason, I thought Knock Out roses were virtually disease-free. Also, a few of my daylilies are showing rust spots on the foliage. Should I dig ...

The national flower of the United States is the rose, symbolising love, honour, and beauty. Learn how it was chosen, its ...