Slowest growing tree
Thuja occidentalis
10.2/155 dimension(s)

The slowest growing tree is the white cedar (Thuja occidentalis), one of which was located on a cliffside in the Canadian Great Lakes area and grew to a height of less than 10.2 cm (4 in) after only 155 years! This same plant weighed only 17 g  (0.5 oz), and averaged a growth rate of 0.11g  (0.003 oz) of wood each year.