The growth cycle of a walnut tree can usually be divided into several stages:
Sapling stage: It takes about 2-3 years from the germination of the seed of a walnut tree until the tree seedling starts to grow a normal tree structure.
Childhood: After the seedling stage, the walnut tree begins to enter childhood. During this stage, the tree sapling grows taller and forms its first major branches and lateral branches, which takes about 4-6 years.
Youth Stage: Once the walnut tree enters the youth stage, it begins to grow and develop further. During this stage, the tree gradually increases tip length and branching, which takes about 10-15 years.
Maturity: In the maturity stage of the walnut tree, the tree has developed a strong trunk and a complete crown and begins to bear fruit. The tree will grow flowers and produce walnut fruits at this stage, which takes about 15-20 years. It is important to note that the growth cycle of walnut trees may vary depending on climate, cultivation conditions and tree species.
The above is only a general timeframe, and the exact growth cycle will also be influenced by geography and management factors. For commercial walnut tree plantings, a more detailed cultivation and management plan is usually in place to optimize fruit tree growth and yield.