In the Celtic Tree Calendar, or the Beth-Luis-Nion Calendar, we celebrate the roles of various plants in nature magic and rituals. Although rumored to be utilized for centuries, this lunar-based calendar was first hypothesized in the 19th century and is now used by witches to give form and structure to their magic.
The Holly tree, or Tinne, is celebrated from July 8th to August 4th. One of the hardiest evergreen plants to exist, the Holly tree represents masculine energy, firmness, and perseverance through difficulties. In fact, the Holly's wood is so robust, that in ancient times it was used to craft carriage wheels and spear shafts. To this day it's also used in protective magic.
Here are a few Tinne correspondences: