Ashenwood is a block of Wood with white bark and pale wooden core from an Ashenwood-tree.
This kind of tree has light green leaves and white bark; it can be found in different sizes from small and bushlike to slender medium size to 2x2 block-wide stems at its greatest height (not much more than medium).
Red Flowers might grow on and amongst its leaves, and there also might be a beehive in its treetop sometimes. Nearly every automatic generated Ashenwood-tree has patches of Moss growing on it, however not as much as the (larger) Weepwood-trees.
Ashenwood-trees also can be grown by players from Saplings to an average slender size, though often without Moss, Flowers or Beehives. Flowers and Beehives may grow by themselves later on though, and Beehives can also be grown by players planting Queen Bees on Ashenwood.
Ashenwood as well as Ashenwood Leaves can also be corrupted.
Corrupt Bombs or Corrupted Wood will turn them into Corrupted Ashenwood respectively Corrupted Ashenwood Leaves. This will make them into Fuel of much higher quality.
Unprocessed Ashenwood can be used to craft a number of recipes in the Crafting Menu, like (as of R25 in November 2015):