Holly is an evergreen, has masculine energy, and is symbolic of immortality. Said to repel lightning strikes it was often planted near homes. It is notably the wood used in Harry Potter’s wand.
The month Tinne, as called by the Celts, fell around the holiday of Lughnasa. We often associate evergreen Holly with winter and the Yule Season because during the summer solstice the Holly King defeats the Oak King and the days start to get shorter.