The folklore of the holly is not solely connected with Yuletide festivities. Like several other native trees, it was felt to have protective properties, and there were taboos against cutting down a whole tree.
Hollies were frequently left uncut in hedges when these were trimmed. A more arcane reason for this was to obstruct witches who were known to run along the tops of hedgerows, though more practically farmers used their distinctive evergreen shapes to establish lines of sight during winter ploughing.
It is said that the Duke of Argyll even had a prospective road rerouted to avoid cutting down a distinctive old holly in 1861.