Winter Willow is Rare
Unlimited supply
Winter Willow trees, also known as 'The Pride Of The South', are only able to grow in extremely cold climates. Because of this, the polar region of Thorberth have the market cornered, and use this lumber as their main export.
Unlike most types of wood that expand and contract in different temperatures, Winter Willow does not experience this issue, which makes it incredibly useful in a variety of applications.