With warm, rainy showers in April, black spot disease is likely to make an unwelcome appearance on roses. However, there is a ...

Black spot disease thrives during the warm, wet weather in April and can cause the leaves of a rose plant to turn yellow and fall off, but gardeners can easily stop roses from becoming infected by usi ...

Today, florists sell roses in a range of colours including red, purple, yellow — and even painted with ... They sequenced the genomes from leaves of specimens representing more than 80 species, and ...