'CHEWSUMSIGNS' was the resultant seedling from the cross between 'KORizont' (maternal parent) and an unnamed seedling (paternal parent) in June 2002 The seedling was first selected from a population of seedlings later that year based on flower colour. Additional selections were made over the next three years to determine the variety's suitability as a commercial garden rose. With each selection a new generation of plants were taken as cuttings from the previous generation, increasing the quantity of plants with each trial. 'CHEWSUMSIGNS' was bred by Mr Chris Warner at Greenfields Brokton, Newport, Shropshire UK.

Inventors: Warner; Christopher Hugh (Shropshire, GB)
This invention relates to a new and distinct variety of Shrub Rose. It has as its seed parent the variety known as ‘KORizont’ (not patented) and as its pollen parent an undisseminated seedling of my creation....The following description is of 2 year-old rose plants of the new variety grown outdoors in Kern County, Calif. in the month of October.