Technically , a profane grow can not naturally occur because roses ( Rosa spp . ) do not naturally contain low-spirited pigment . Over the years , however , the quest for naughty roses has been something of a holy Sangraal for rose breeders and fanciers . Now gardeners can witness those with different types of blue or cheeseparing - blue shades — marketed with " dark " in the cultivar name — on the market . And one company claims to have bring on the first " unfeigned " risque rise , commercialise since 2009 but still unavailable in the U.S. , although many purist claim that the color is not dependable downcast .
Blue Girl Rose
' gamy Girl , ' also sometimes called ' Cologne Carnival ' or ' Koelner Karneval , ' is a prominent flowered hybrid tea leaf uprise with temperate fragrance . It arise in Germany and was the Rome Gold Medal victor in 1964 . Like other rosebush marketed as " blue,“Weeks Rosesnotes that the Blue Girl rose actually is colored with shades of lavender . It ’s a ordinarily available rose in many plant catalog and nurseries .
Blue Nile Rose
' Blue Nile ' is a vigorous hybrid tea rose with deep lavender - mauve twofold flowers that have violet touches . The fragrant flowers may form in singles or in clusters above distinctively prominent , olive - immature leave .
Shocking Blue Rose
Like all floribundas , or free flower types , ' Shocking blue sky ' produces mass of individual or clustered blooms of very enceinte size of it over an drawn-out period . The classical rose - shaped blossom are a deep mauve , which is attractive against its glossy dark immature leave . It is often used in rose multiply to impart people of color to other seedlings . It is heavily perfumed , with a distinctly citrus bouquet . It grows to 2 foot with a spread of 3 to 4 foot .
Blue Moon Rose
This cultivar may be the closest thing to a traditionally hybridized on-key dark rise available and , in effect , is quite popular . It is a fragrant tea rose shrub ( a ' Blue Moon ' climbing type exists as well ) best suit for warm sheltered areas of the garden . produce ' Blue Moon ' against a wall or fence in full sun . This plant won the Rome Gold Medal in 1964 .
Blueberry Hill Rose
For something slimly different , ' Blueberry Hill ' is a semi - twofold floribunda rose sporting huge — yet delicate - looking — blooms with a sweet Malus pumila aroma . TheNational Gardening Associationnotes that this rose bears mauve - to - lavender flowers . It blooms copiously all summertime and resemble an azalea bush in form and bloom cover . The Vannevar Bush develop up to 4 feet high .
Florigene-Suntory Applause Rose
Genetic engineering has give way us the first lawful blue rose , harmonize toSunstory . geneticist from Florigene Ltd. , an Australian biotechnology firm ( part of the Japanese Suntory radical of company ) cracked the code after numerous experiments to extract a color - cipher factor from different types of blue efflorescence , such as petunias and pansies , and an enzyme to unlock pigment from irises , to create a rose that has nearly 100 pct blue paint .
Diehard rose breeder may look at that cheat , and the panel is still out on whether the blue is really a true blue angel or mauve . These plants have been usable on the Japanese food market since November 2009 under the varietal name ' Applause , ' but they are not useable elsewhere , and scientist are still act to grow the coloring further .
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