In this paper, the comparison of former and contemporary threats to the value of historic gardens has been carried out. The analysis was based upon the publication of Majdecki, dating back to the 80s and 90s of the 20th c., being treated as a reference to the currently observed negative practices. In this article, verification of the earlier classification of phenomena, constituting a threat to the historic gardens, was suggested. Observations by the authors and scientific publications from the recent ten years have been adopted as the basis for conclusions and syntheses
