A Complete Analysis of the Key Cultivation Techniques for Plum Blossom Bonsai

Plum blossom, pine and bamboo are known together as the Three Friends of Winter. Its flowers are both simple and elegant; its branches are mottled and aged, and not prone to rotting, making it one of the few tree species in bonsai material suitable for creating shari and jin. It has extremely high ornamental and collectible value, and is therefore sought after by bonsai artists. Plum blossoms bloom in the cold winter when all other flowers have withered, and are deeply loved by people. People place plum blossom branches in vases or display them indoors when in bloom, beautifying the home with a refreshing fragrance.

Plum blossom (Prunus mume), a deciduous tree in the Rosaceae family, Prunus genus, has elegant branches, graceful and colorful flowers, and a refreshing fragrance. In winter when all other flowers have faded, it braves the frost and snow, blooming defiantly in the cold. It represents the noble quality of perseverance of the Chinese nation, and its charm, appearance and fragrance are all of the highest order, ranking first among China's ten traditional famous flowers. Plum blossom is a small deciduous tree in the Rosaceae family, Prunus genus, and can be grown as a potted ornamental. So, how do you cultivate plum blossom bonsai? Below is an introduction to plum blossom bonsai cultivation techniques:

1. Propagation

Plum blossom has a low fruit-setting rate, so seed propagation is rarely used in actual cultivation. Autumn sowing is preferable; if spring sowing is needed, the seeds should be stratified with moist sand in autumn and taken out for drilling in early spring. Due to slow growth, plum blossom seedlings take a long time to reach the flowering stage, and their offspring show great variation in traits, so they are mostly used for propagating rootstock or breeding new varieties.

2. Potting

For pot cultivation, select plants approaching their flowering period in spring and pot them with a soil ball while the new leaves have not yet unfurled. Use loose, fertile sandy soil as the potting medium, mixed with some decomposed cake fertilizer. After potting, water thoroughly twice in succession, then place in a sunny location for cultivation.

3. Watering

Plum blossom fears waterlogging; too much water will damage the roots and cause leaf drop, affecting bud formation and blooming. In summer, water once daily in the afternoon; on rainy days, lay the pot on its side and promptly drain any accumulated water. In autumn, reduce watering, and also water less during the flowering and leaf-unfurling periods. Newly purchased plum blossoms, because too many flowers weaken the tree's vigor, often struggle to sprout new buds. Therefore, from the beginning of the flowering period until budding, spray water on the tree to prevent the trunk from drying out, which helps promote budding.

4. Fertilizing

In addition to fertilizing when potting and repotting in spring, plum blossom can be given a dilute decomposed liquid fertilizer once a week during the summer growing season. In autumn during the bud formation period, stop applying nitrogen fertilizer and increase a small amount of quick-acting phosphorus fertilizer to control plant growth and promote flower bud differentiation.

5. Pruning

In terms of branches, strong branches should be lightly pruned, while weak branches should be heavily pruned. Plum blossom flower buds form on new growth of the current year; to encourage more flowers, pruning can be used to stimulate more branching. Diseased branches, water sprouts, weak slender branches, crossing branches and dead branches should be pruned away at any time. Potted plum requires heavier pruning than field-grown plum, and should involve heavy thinning and heavy heading back.

6. Shaping

To cultivate a plum blossom bonsai with both abundant flowers and a graceful tree form, in addition to careful maintenance and management, artistic processing is essential. The basic methods are pruning and wiring. A characteristic of plum blossom is that flower buds form on new growth of the current year; therefore, to make it bloom more, timely pruning is needed to produce substantial new branches. New branches of plum blossom tend to grow naturally upward; to ensure a graceful tree shape, they need to be tied with string in a timely manner.

7. Repotting

Plum blossom should be repotted once a year after flowering in spring. Every other year, repot after post-bloom pruning (in March). When repotting, completely remove the soil and rinse the roots with water. If the task of cleaning the soil is neglected, subsequent management will deteriorate beyond remedy. The key to root pruning is to first cut off thick and long roots, retaining as many fine roots as possible. Because roots and branches are closely related, as long as there are many fine roots, the number of branches will also increase, which helps produce dense small twigs.

8. Pest and Disease Control

There are many types of plum blossom diseases, the most common being powdery mildew, leaf curl disease and anthracnose. It is also prone to pests such as scale insects and aphids, so timely disinfection is needed.