Check out the different colors of Knockout roses. The original color was red and followed by dark pink. The rainbow roses are coral with yellow centers, the blushing roses are a light to shell ...

Today, florists sell roses in a range of colours including red, purple, yellow — and even painted with blue or multi-coloured dyes. But what colour were the first roses? A large genomic analysis ...

Should I dig them and discard? — Debora 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.