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. Osier willow is the fastest growing tree on our list and can reach its full height in just a few years.The smallest tree in the world is dwarf willow (salix herbacea), measuring 1-6 centimeters and found in arctic regions.