As a result of its rapid growth, lush foliage, and attractive canopy shape, this tree has become a popular choice in gardens, parks, and urban landscapes across many scenic areas. For instance, the suburbs of southern Shaanxi and Wuxi in Jiangsu Province were identified as suitable for planting and were actively promoted. These areas later recognized it as a "tree" species, and it became widely favored by local residents.
First, seed collection and storage: Select healthy, vigorous trees with good appearance and strong growth as mother trees. When harvesting seeds, pay attention to their maturity signs—when the seed coat turns black, they are ready for collection. After harvesting, wash the seeds thoroughly, remove any debris, and allow them to dry. Then, perform stratification in a well-ventilated area or in a field hole with low groundwater levels. The sand should be moist but not overly wet, and it should be formed into small clumps by hand and spread out evenly.
Second, sowing seedlings in the field: Choose loose, well-draining loam soil for planting. In Shaanxi and Gansu provinces, it is best to plant seedlings in mid-March to early April. Planting in the fall can lead to frost damage. Use raised beds, ensure the soil is finely tilled, and sow seeds in rows spaced 25 cm apart. Cover the seeds with 2–3 cm of soil and water thoroughly. After sowing, cover the seedbeds with straw to retain moisture and remove it once the seedlings emerge. This method can achieve an emergence rate of over 90%.
Third, transplanting and planting: After several trials, it was found that T. sinensis seedlings are best transplanted after one year of growth. Avoid keeping them in the nursery bed, as there have been no successful cases of transplanting bed-grown seedlings. Instead, choose seedlings that have been cultivated for a few years. Transplant them at a spacing of 0.5 m x 0.3 m. This helps maintain a reasonable density, supports root development through mulching, and increases survival rates. The more times you transplant, the better developed the root system becomes, which improves the chances of survival. Be cautious: one-year-old camphor trees are susceptible to frost, so cut back late autumn shoots and cover them with rice straw.
For garden nurseries, seedlings with a diameter of 2–4 cm are ideal. The main trunk should have green bark; if it’s dark brown, the seedling is too old and should not be planted. The number of branches depends on the age of the seedling. For 3–6 year-old seedlings, cut back about half the branches; for 7–10 years, cut 3/5; and for 11–14 years, cut 4/5. Prune by cutting off one-third of the lateral branches, leaving 3–7 evenly distributed branches above.
The timing of planting is crucial. In southern Shaanxi, the best time is from mid-March to mid-April in spring, and September in autumn. In Wuxi, the optimal period is between March 25 and April 10, followed by the rainy season, which provides a good opportunity for transplantation.
When raising seedlings, apply mulch around the base, covering an area of about 30 cm in diameter. Prevent soil loss, and after pruning, trim the branches and leaves, leaving 1–3 pieces to reduce water evaporation and improve survival. However, avoid cutting too much, as this may affect the crown shape. Also, to adapt to inter-provincial transportation, some lateral branches should be removed to increase survival rates. Observations show that large seedlings without leaves have a survival rate of only 30%–50%. When pruning, cut close to the main trunk, avoiding any stubs and ensuring the bark isn’t torn.
The planting hole should be at least 50–60 cm deep and wide. The planting depth should match the root collar height of the seedling. When planting, make sure the soil is tightly packed, avoiding air pockets. When placing large seedlings in the hole, step around the sides and fill the hole completely.
Whether planting on a cloudy or sunny day, it's important to water the tree thoroughly. During dry and sunny weather, water every 7 days, and do so 3–4 times consecutively.
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