Redwood

The term redwood refers to the species Sequoia sempervirens (a.k.a. coast redwood, California redwood, and giant redwood), in the Cypress family, though it may also be used more informally to refer to the two other species Sequoiadendron gigantem ("giant sequoia") and Metasequoia glyptiostobiodes ("dawn redwood") or to any brownish-red wood.

Wandlore
Wand-quality redwood is in short supply, yet constant demand, due to its reputation for bringing good fortune to its owner. As is usually the case with wandlore, the general populace have the truth back to front: redwood wands are not themselves lucky, but are strongly attracted to witches and wizards who already possess the admirable ability to fall on their feet, to make the right choice, to snatch advantage from catastrophe.

The combination of such a witch or wizard with a redwood wand is always intriguing, and I generally expect to hear of exciting exploits when I send this special pairing out from my workshop.

Behind the scenes

 * The fact that wand-quality Redwood is in short supply is possibly a reference to the short supply of actual Redwood (being endangered species).

Appearances

 * Pottermore