The authenticity of the historical garden, as defined by the Florence Charter, is conducive to its broad interpretation. In the era of the present crisis of conservation values, the identification of criteria helpful in an objective assessment of the authenticity of both historical and historising forms of greenery is required.

On the example of the restoration’s solutions in the gardens at Wilanów and the condition of selected elements of the urban greenery in Warsaw, it is possible to verify the model of valorization of factors determining the vegetation’s authenticity proposed by the author of the article. This model also allows to emphasize the features determining the role of royal gardens in Wilanów in maintaining the historical horticultural values of modern Warsaw.