The only Black ( what growers refer to
black)
rose can only be grown in Halfeti, Turkey. Because of it's soils and climate on the river bank,is the only place where
black rose grows in the world.It only give blossom twice a year only for fifteen days. And even still they are not a black BLACK color they are a very dark deep red/burgandy which is so dark they Appear to be black. ( Funny I found that info, BUT couldn't find any pictures from googling it to substantiate it
Any other
roses that appear to be black has been manipulated with dyes as stated above. So In a nut shell no such thing as a TRUE Black
rose. Why try to fool mother nature with dyes.

Just enjoy what mother nature gave us She had her reasons,,