Phenotypic Plasticity (abbreviated as PP in the article) commonly refers to the ability of a genotype (an individual's gene collection) to adjust its phenotype (the set of observable traits of the same individual) under different environmental conditions (Arnold et al., 2019;Bradshaw, 1965;Pigliucci & Pigliucci, 2001). This mechanism plays a crucial role for the development and survival of individuals facing new adverse environmental conditions (Silvestre et al., 2012), especially if we refer to sedentary and long-living organism such as forest trees (Bradshaw, 1965;Santini et al., 2018). Due to their long existence, trees have to face climatic fluctuations of variable frequencies and intensities (Rehfeldt et al., 2001) and thus have higher chances to come across extreme weather events. PP however is also a very important mechanism to adapt to rapid environmental change