Hi, welcome to the forum.  I hope you do realize that these beautiful trees are Robinia species, not actually related to true acacias.  They merely look much alike.  I still remember both the joy upon discovering these growing right next to my apartment and the disappointment after researching their actual identity and alkaloid content.  There is no dmt or any other related tryptamines in these trees.  In fact they are toxic, so be careful and don't attempt to ingest any part of it.