Sophora japonica

Origin distribution

Sophora japonica is evergreen in the subtropics and is suitable for land cultivation in areas south of the Great Wall where the temperature is minus 17 degrees Celsius.

Morphological characteristics

Sophora japonica is a deciduous small tree or shrub, which is a cross-breeding product of traditional Chinese Sophora japonica and American Sophora japonica and Sophora japonica. The plant is 3-4 meters tall, with 5-7 pairs of leaflets. It begins to bloom in August every year, with buds like golden beans, flowers like golden butterflies, and pods belonging to the Leguminosae family. It grows vigorously, with luxuriant branches and leaves, large and bright flowers, and golden color (duck egg yellow), so it is known as the treasure-gathering golden tree. When the frost comes, the hospitality remains, and the fallen leaves do not fall, filling the gap of no ornamental flowers and trees in early winter. It is not the spring scenery, but better than the spring scenery, and the taste is quite high.

Growth habits

It likes light, can tolerate a little shade, and grows quickly. It should grow in loose, well-drained soil and bloom vigorously in fertile soil. Resistant to pruning.

Garden use

In cold areas, potted plants are used to make bonsai, and they are moved to sunny indoors or greenhouses during the winter blooming period. Accompanied by the golden auspiciousness of golden beans and fluttering golden butterflies, fashionable flowers enter a warm home, making the winter warm and joyful. The Sophora japonica plant is strong and vigorous, and the 80-100 cm seedlings can bloom as soon as they are born. The tree's appearance is clean, cool and bright, and it is very popular. Due to the limited scale of seedling breeding, greening in towns and streets is currently rare. It is a rare species. Experts predict that Sophora japonica will be a must-select variety in the long task of beautifying cities and towns; the emergence of Sophora japonica will add new talent to the winter flower market. It blooms in summer and autumn with a long flowering period of about 3-4 months. The flowers are bright yellow, eye-catching in color, bright but not delicate. It is often used as an ornamental tree species for greening factories, campuses or urban roads.

Propagation and cultivation

Propagation is mainly by seed sowing, but also by cutting. Cut the lignified branches of the current year, soak them in water with a concentration of ABT2 rooting powder 50PPM for 2 hours, and then the cuttings will survive. The rate is higher. It should be carried out in spring or summer. When the sun is strong, use a gray shading net to keep the seedbed moist and easy for rooting. The best cultivation soil quality is well-drained loam or sandy loam, and sufficient sunlight is required. Top dressing once every 1-2 months during commuting. Prune and reshape once from late winter to early spring. Aging plants should be pruned hard to promote new branches and achieve the purpose of multiplying branches. Potted plants: It is advisable to choose a large pot larger than 33 cm. The cultivation soil is loose and fertile. It can be trimmed according to the shape you like. It is more drought-tolerant to avoid flooding. The suitable temperature for growth is 17-30 degrees.