There are no natural black roses. Florists can make them using a black floral spray so if you have seen one that's what it was. Many Hybridizers are trying to grow one but the best they have so far is a very, very dark maroon.

In hot sun the edges will darken to black. Some will even appear black in the bud stage, but when they open they are that dark maroon.

To sell roses many nurseries will name a rose "Nearly Black" or "Almost Black". This applies to Blue roses also. There is no True Blue rose. There are lavenders, and Mauves which are called "Blue Girl" , "Blue Boy." No true blues. The blue gene does not naturally appear in roses.

Attempts are being made to splice a blue gene from other flowers into roses but so far that attempt has been unsuccessful.