Spruce

A spruce is a tree of the genus Picea, a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal (taiga) regions of the earth.

Wandlore
Unskilled wandmakers call spruce a difficult wood, but in doing so they reveal their own ineptitude; it is quite true that it requires particular deftness to work with spruce, which produces wands that are ill-matched with cautious or nervous natures, becoming positively dangerous in fumbling fingers.

The spruce wand requires a firm hand, because it often appears to have its own ideas about what magic it ought to be called upon to produce. However, when a spruce wand meets its match - which, in my experience, is a bold spell-caster with a good sense of humour - it becomes a superb helper, intensely loyal to their owners and capable of producing particularly flamboyant and dramatic effects.

Appearances

 * Pottermore