How many years does it usually take for an osmanthus tree to grow to a diameter of 20 cm?
The osmanthus tree grows very slowly. It is estimated that it will take more than 40 years to reach 20cm.
If you want to cultivate osmanthus trees in a targeted way, you should start pruning when the osmanthus trees are in the seedling stage, that is, when they are 1 or 2 years old. The main trunk is cultivated during the seedling stage. In the first and second years, it can be allowed to grow freely, leaving the upright branches as the trunk, and the branches and side branches as auxiliary branches.
In the third year, when the sweet-scented osmanthus seedlings grow to a height of 1 meter to 1.5 meters, the fixed branches should be removed to allow them to grow new branches. All branches and side branches in the middle and lower parts of the main trunk of the osmanthus seedlings should be cut off. A single osmanthus tree has only one trunk, while a clustered osmanthus tree has multiple trunks. The choice of branches and side branches in the middle and upper part of the main trunk depends on the height of the main trunk. Extended information
A wild "osmanthus tree king" was discovered in Cheliba Village, Shengjiaba Township, Enshi City, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province. The tree is 16 meters tall, with a crown width of 17 meters and a trunk Diameter 102 cm. This sweet-scented osmanthus tree is over 360 years old. From a distance, the King Tree looks like a big umbrella. The surrounding branches stretch to the ground, and the leaves are very lush, completely blocking the scene inside.
Located in Shengshui Temple, Nanzheng County, Hanzhong City, southern Shaanxi Province, there is the oldest osmanthus tree. According to legend, this osmanthus tree was planted by Xiao He, a minister of Liu Bang, the emperor of the Han Dynasty, in the early years of the Western Han Dynasty (206 BC). It was planted, so it was called "Han Gui". According to scientific determination, the age of the tree is 1840±350 years.