Why are there berries on a holly bush in June?

Holly bushes produce berries in the fall and winter, but if you notice berries on a holly bush in June, it could be due to the specific variety of holly or environmental factors that have caused an unusual growth cycle. Some holly species may produce fruit earlier than others, or an early warm spell could have affected the timing of berry development. Additionally, the presence of both male and female plants is necessary for berry production, so if conditions are favorable, you might see berries forming earlier in the season.