In France, Douglas-fir recently suffered significant diebacks following drought episodes. Whether Douglas-fir will be able to adapt to the future climatic conditions is a major concern for forest managers and scientists. We investigated the intraspecific variation of cavitation vulnerability, a key trait in plant survival to drought. We aim to compare the adaptive potential of resistance to drought of provenances from a part of the Douglas-fir natural area that is promising for French plantations, California. We collected branches on a 25-year-old Douglas-fir provenance trial replicated in two sites in the south of France. We compared Washington and Oregon provenances to California provenances. We sampled two branches on twenty trees per provenance for a selection of ten provenances and estimated cavitation vulnerability with the centrifuge method in INRA PIAF, Clermont-Ferrand. The first results show a significant and low between-provenance variation for cavitation vulnerability in both sites, with a strong interaction. We discuss whether this variation is a real improvement of the potential of resistance to drought. In the next steps, we will investigate the relationship between microdensity and resistance to cavitation and use it to extend the study to the 18 provenances not yet exploited.