Notes from Wikiquote
Washington also recorded his concern that the male and female plants be separated | May 12-13 1765: Sowed Hemp at Muddy hole by Swamp. | August 7, 1765: —began to seperate the Male from the Female Hemp at Do —rather too late. | Some assert his interest in separating the male and female plants is an indication that he may have used Indian hemp medicinally to treat his chronic tooth aches. Others note that fiber of the male and female hemp plants have different optimum harvest times.