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Suntory "blue" rose Rosa 'Cardinal de Richelieu' rose, used for the first genetic engineering experiments. Scientists have yet to produce a truly blue-colored rose; however, after thirteen years of collaborative research by an Australian company, Florigene, and a Japanese company, Suntory, a rose containing the blue pigment delphinidin was created in 2002 by genetic engineering of a white rose ...
The cultivar flushes in a chronological blooming pattern throughout its local season, starting in late spring until fall. The long-stemmed rose flowers are long lasting and showy and make excellent cut flowers, though they "blue" badly with age. The rose bush reaches 75 to 200 cm (30 to 79 in) height, and a diameter of 60 to 120 cm (24 to 47 in).
However, they lack the blue pigment that would give a true purple or blue colour and until the 21st century all true blue flowers were created using some form of dye. Now, through genetic modification, a Japanese company succeeded in creating a blue rose in 2004. [21] Colours are bred through plant breeding programs which have existed for a ...
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Rosa 'Knock Out', (aka RADrazz), is a shrub rose cultivar bred by American rose grower William Radler in 1989 and introduced into the United States by Star Roses and Plants in 2000. It was named an All-America Rose Selections winner in 2000.
In 1986, Carruth began working at Weeks Wholesale Rose Grower. He worked at Weeks for twenty six years, and was the nursery's rose hybridizer from 1989 until his retirement in 2012. [3] During his forty-year career, Carruth introduced more than 100 rose varieties, including eleven All-America Rose Selections (AARS). [4] 'Blueberry Hill'
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