Botany: dioecious plants: English holly
Self-tutoring about local plants: the tutor mentions English holly.
Some kinds of trees have separate sexes, so that any individual is either male or female. Such a species is described as dioecious: an example is English holly. The berries only occur on female trees.
On a side note, English holly is considered invasive in BC. I’ve seen it in the forest. Its berries are toxic.
Source:
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.