As a result of its rapid growth, lush foliage, and attractive canopy shape, this tree has become a popular choice for landscaping in various scenic areas such as courtyards, streets, and parks. For instance, the suburbs of southern Shaanxi and Wuxi in Jiangsu Province were identified as suitable for planting and were actively promoted. These trees were later recognized as official "landscape trees" in Wuxi and gained widespread popularity among locals.
First, seed collection and storage: Select healthy, vigorous mother trees with good appearance and growth. When harvesting seeds, pay attention to their maturity indicators. Once the seed coat turns black, it is ready for collection. After gathering, wash the seeds thoroughly, remove any debris, and allow them to dry. Then, perform stratification in a well-ventilated area or in a field pit 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.
Second, sowing seedlings in the field: Choose loose, well-draining loamy soil for planting. In Shaanxi and Gansu provinces, it is best to plant seedlings between mid-March and early April. Avoid planting in the fall, as young seedlings are vulnerable to frost. 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 them 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 seedlings: After several trials, it was found that T. sinensis seedlings are best transplanted after one year of growth. Avoid keeping seedlings in the nursery bed, as there are no successful cases of transplanting them directly from the bed. Instead, choose seedlings that have been cultivated for several years. Plant them at a spacing of 0.5 m x 0.3 m. This helps maintain an appropriate density, supports root development through mulching, and improves survival rates. The more times you transplant, the better developed the root system becomes, which increases the chances of survival. Be cautious—1-year-old camphor trees are prone to frost damage, 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 bark should appear green; if it's dark brown, the seedling is likely old and unsuitable for planting. The number of branches depends on the age of the seedling. For 3–6-year-old plants, prune about half of the branches. For 7–10-year-olds, trim up to 3/5, and for 11–14-year-olds, cut 4/5. Prune by cutting off one-third of the lateral branches, leaving 3–7 evenly distributed branches for a balanced crown.
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 is ideal for replanting.
When raising seedlings, apply a layer of mulch around the base, covering an area of about 30 cm in diameter. Prevent soil erosion. After pruning, cut back some branches and leaves, leaving 1–3 pieces to reduce water loss and improve survival. However, avoid cutting too much from the top, as this may cause an elongated crown. Additionally, to facilitate transportation across provinces, some lateral branches should be removed to increase survival rates. It was observed that survival rates dropped to 30–50% when large seedlings without leaves were planted. 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 level of the seedling. When placing the tree in the hole, make sure the soil is tightly packed, avoiding air pockets. When planting large seedlings, step on the sides while filling the hole until it is completely filled.
Whether planting on a cloudy day or during sunny weather, water the tree thoroughly. During dry and hot periods, water every 7 days, and continue watering for 3–4 weeks to ensure proper establishment.
Intellent Cleanroom Cleaning Robot,Cleanroom Intelligent Cleaning Systems,Automatic Intelligent Cleaning Robot
AUSTAR Goup , https://www.hansencleanroom.com