Holly (Tinne)

Holly stays green through the depth of winter when oak has gone bare, and in the seasonal Oak King/Holly King myth cycle it rules the year's second, darker half — strength that shows itself through endurance rather than dominance. Its wood, dense and pale, was prized for spear shafts: force held in check until it was needed.

As a tree sign, your theme is power under control — you're capable of a lot more force than you usually show, and the restraint is the actual discipline, not a lack of strength. The lesson is trusting that holding back isn't the same as backing down.