What is the smallest fully grown tree?
Growing to a mere 1-6cm in height, the dwarf willow (salix herbacea) is arguably the world’s tiniest tree. Arguably, the dwarf willow (salix herbacea) is the smallest tree in the world. This woody plant is usually only found in cold, arctic climates. The tree itself can reach a height of about one foot tall and it has tiny leaves that are less than an inch long. It also produces small flowers which help the tree reproduce.Osier willow is the fastest growing tree on our list and can reach its full height in just a few years.