How to plant黄花槐 (Golden Cassia)
About the introduction of planting techniques and related green plant flower aspects of黄花槐, the following is a detailed introduction for you
Species introduction: 黄花槐 belongs to the Fabaceae family, Papilionoideae subfamily,槐属, also known as mountain扁豆, golden凤凰树, golden药树, tree槐, bean槐, yellow槐. 黄花槐 is not the scientific name of this plant, but a gardening name. The real 黄花槐 is another plant. 黄花槐 is evergreen in subtropical regions and adapts to land planting in areas south of the Great Wall where temperatures do not drop below -17°C. It is native to the West Indies and Southeast Asia and has been introduced in a wide range of areas in China, from southern Guangdong to northern Guangdong, as well as in Guizhou and Sichuan provinces. With the continuous progress of modern urban construction and the continuous improvement of landscaping standards, the application of 黄花槐 as a major flowering tree species in late autumn has increased, and it is now widely used as street trees or color belts.
I: Growth habit introduction
黄花槐 is bred from the traditional Chinese Scholar Tree and American golden yellow槐, and is a deciduous small tree or shrub. The plant height is 3-4m, with 5.7 pairs of small leaves. It begins to bloom in August each year, with buds like golden beans and flowers like golden butterflies, producing pod fruits belonging to the Fabaceae family. It grows vigorously, with dense branches and leaves, a large number of bright flowers, and a golden yellow color (egg yolk), hence the name "Golden Treasure Tree." It does not shed its leaves when frost comes, filling the gap of ornamental trees in early winter, not as beautiful as spring but similar, with high taste. Evergreen small tree. 10m high, generally 3-5m is the best viewing height. The crown is large and round. It has even-pinnate leaves with 7-9 pairs of small leaves, and glands at the base of the petiole and rachis. It has corymbose racemes on upper branches, with bright yellow flowers about 5cm in diameter. It can bloom all year round, but September to October is the peak period. The pod fruits are flat, bead-like, 7-9cm long, maturing from January to February, with black-brown seeds.
黄花槐 prefers sunlight but can tolerate some shade, grows quickly, and thrives in loose, well-drained soil. It flowers vigorously in fertile soil and is耐修剪.
II: Main value introduction of 黄花槐
In cold regions, it can be grown in pots for bonsai and moved to sunny indoor or greenhouses during the winter blooming period. With round golden beans and fluttering golden butterflies, this plant adds a touch of golden luck to modern homes, bringing warmth to the cold winter. The plant is robust, with 1-year-old seedlings as small as 80-100cm that can bloom. It has a clean and bright posture, very popular, and due to the lack of large-scale seedling breeding, it is not commonly seen in urban and street绿化. It is a rare variety, and experts predict that it will be a must-choice for the long-term urban beautification task. The emergence of 黄花槐 supplements the winter flower market with a new talent. It blooms in summer and autumn, with a long flowering period of about 3-4 months, bright yellow flowers that are striking and not delicate, often used as an ornamental flowering tree for factories, campuses, or urban road绿化.
III: Planting technique introduction
1. Propagation and cultivation
Propagation is mainly by seed sowing, but it can also be done by cutting. Cut the current year's lignified branches, soak them in 50mg/kg ABT2 rooting powder solution for 2 hours before planting, which has a higher survival rate. It is best to do this in spring or summer, with gray shading nets used when sunlight is strong to maintain moisture in the seedbed for easy rooting. The best soil for cultivation is well-drained loam or sandy loam, with plenty of sunlight. Fertilize every 1-2 months during the growing season. Prune and shape once at the end of winter to early spring, with older plants needing strong pruning to promote new branch growth, achieving the goal of more branches and leaves. For potted plants, choose a large pot larger than 33cm, with loose and fertile soil, which can be pruned and shaped according to preference, avoiding waterlogging and drought-resistant, with an optimal growth temperature of 17-30°C.
How to plant 黄花槐
2. Seed propagation
(1) Preparation before sowing
Select a nursery site. Generally, choose flat land with convenient irrigation and drainage, fertile soil, pH below 7.0, and less pests and weeds, such as sandy loam.
(2) Land preparation and bed making
Deep plowing should be done in winter, about 25cm deep, to allow soil aeration and reduce pests and diseases. Half a month before sowing, apply 2.5 tons of organic fertilizer per hectare and disinfect the soil (using 5-7.5kg of furadan, 10kg of ferrous sulfate, and mud scattered on the nursery site), then plow and make beds. The beds should be 1m wide, 25cm high, 10-20m long, with a 30cm wide and 25cm deep walkway.
(3) Seed selection and germination induction
Seeds purchased on the market generally have low purity, so seed selection is necessary before sowing, removing seeds that are not fully developed and leaving pure seeds for germination. Soak the seeds in water for half a day, then remove them and place them on wet burlap, covered with another wet burlap on top. Germination usually occurs within a week. Once germination starts,播种 promptly. The sowing period for 黄花槐 should be from late February to early March, using a drill sowing method, with播种沟 depths of 1.5-2cm and row spacing of 20cm. The sowing rate is 2kg per 667m². After sowing, cover with fine soil 1.5-2cm thick and gently press with a board to reduce the现象 of seedlings emerging with shells. Then cover with稻草 to keep warm and moist, preventing soil compaction and facilitating seed germination.
3. Cultivation management
After covering the seedbed with grass, immediately spray it with water, making sure the spray is uniform. Keep the seedbed moist, and after about 15 days, the seedlings will start to emerge. When 50% of the seedlings have emerged, remove the grass. Removing the grass too late can cause seedling loss. After emergence, thinning is needed to ensure that seedlings have enough space for nutrition and to grow strong seedlings. Normal field management includes keeping the seedbed moist, weeding, loosening the soil, and fertilizing. "Remove weeds early and often," and when the seedlings are about 10cm tall, apply 10% dung water as a top dressing every 15 days to accelerate seedling growth.
The above sharing on how to plant 黄花槐 and the detailed introduction of planting techniques is for netizens to refer to and learn from.