The eleventh installment of the Eastern Seed Zone Forum's online lecture and discussion series aimed at providing both information about the creation of seed zones in general and a forum in which professionals, experts, and interested parties discuss the possibility of drafting seed zone guidelines for the eastern United States. In this webinar, Dr. Laura Leites will discuss efforts to recover and re-analyze provenance tests data for northeastern forest tree species and illustrate how new analyses can inform seed movement under a changed climate.