How to grow potted banana shrubs? Growing methods and precautions
Banana shrub, also known as hanxiao mei, banana flower, and shaojiu hua, belongs to the Magnoliaceae family. It is an evergreen shrub native to southern China. It blooms in early summer, with flowers borne singly in the leaf axils. "The flowers resemble orchids; when they open they are often not fully open, as if smiling, and then they quickly fall, which is how it got its name." (From "Qunfangpu") The flowers are creamy yellow, and the petal edges often carry a purple tinge. There is also the "purple-flowered banana shrub."
The banana shrub has jade-green, glossy leaves and a rich, intoxicating fragrance, and is a famous garden flower in China. "The flower opens without parting its lips, shy and bowing its head, just like a jade beauty smiling, deep feelings flowing in secret." This is a wonderful portrayal of the banana shrub's graceful posture. The banana shrub is suitable for planting in courtyards, in flower beds, and in front of windows. As a potted plant at home, it is most suitable of all. It blooms for several months, filling the whole courtyard with fragrance. Tuck a banana shrub flower inside a mosquito net or on your lapel, and it is enough to make anyone enchanted and full of praise. The flowers can be used to scent tea and to extract aromatic oil.
The banana shrub has elegant branch tips and is captivating when in bloom. It is a well-known variety grown for both foliage and flowers, and is very suitable for beautifying the home. Judging by the growing methods for the banana shrub, its care is also relatively simple. If you like the banana shrub, you might as well place one in the living room or other spots at home.
The banana shrub likes light shade and cannot tolerate dryness or full sun; it likes a warm, humid climate; it is relatively cold-tolerant; and it thrives in fertile, acidic sandy loam. Spring is the better time to transplant it, though autumn also works. Transplant it with a soil ball. Grow it in a spot that is sheltered from wind, sunny yet not too exposed, and it will grow well. Fertilizing should follow the principle of frequent applications of weak fertilizer, as too strong a mix easily damages the fleshy roots. During the growing season, apply a dilute fertilizer solution once every seven to ten days. Human feces and urine should not be used. In March, thin out some of the overly dense small branches to improve ventilation and light penetration inside the canopy. After flowering, cut off the flower stalks to reduce nutrient consumption. Potted plants should be repotted with fresh soil once every other year. Place 3-4 cm of broken tiles or pea gravel in the bottom of the new pot, add some potting soil along with crushed bone and cake fertilizer, then take the banana shrub out of the old pot, remove some of the old soil, trim away some old and decayed roots, and then place it into the new pot, positioning it upright and straight. The potting soil is made by mixing sandy loam with leaf mold.
Whether grown in the ground or in a pot, the banana shrub should always have good drainage. In winter, watering should be controlled appropriately in particular, to avoid waterlogged potting soil causing root rot. But it should not be too dry either. Dry leaf tips are caused by the first watering after repotting not soaking through, or by water not soaking through for a long time; the potting soil should be soaked thoroughly in time so the leaves gradually return to normal. In winter, tie straw around it for frost protection or move it to the steps or indoors. In summer, use bamboo screens or green trees for shade to avoid scorching sun. But at night it should not be covered; let it take in rain and dew. Sprinkle water on the leaves and the ground often to raise humidity and promote growth.
The main pests and diseases include cottony cushion scale and sooty mold. Cottony cushion scale can be brushed off with a small brush, or sprayed with 40% dimethoate diluted with 1,200 parts water; sooty mold can be wiped off with a gauze pad dipped in clean water, or sprayed with carbendazim diluted with 500-1,000 parts water.
Growing methods for the banana shrub:
1. Soil: The banana shrub has fleshy roots and requires potting soil with good permeability. You can use a potting soil made of 4 parts leaf mold, 3 parts garden soil, 2 parts decomposed manure soil, and 1 part sand.
2. Watering: The banana shrub should normally keep its potting soil moist, but it must never be too wet. Because many of its roots are fleshy, too much watering or waterlogging after rain will cause root rot, so humidity must be controlled during the rainy season. It needs more water during the growing season and before flowering, with watering once a day. In hot summer weather, water the leaf surfaces to maintain a certain air humidity. In autumn and winter, because daylight is shorter, watering once or twice a week is enough.
3. Sunlight: In summer, the banana shrub should not be exposed to full sun; it needs 30% shading to prevent strong light from scorching the leaves. It can be placed at an east-facing window or balcony indoors, or outdoors under tree shade or a shade shed. After the weather cools in autumn, it can get more sunlight. In winter, place it indoors in a sunny, well-ventilated spot.
4. Temperature: The minimum temperature for overwintering the banana shrub should not be lower than 5°C. Once the temperature drops below 5°C, the plant's normal physiological activities are affected, the roots' absorption capacity weakens, and the tender branches and leaves wilt. At the same time, the maximum temperature should not exceed 15°C; if the temperature is too high, the plant consumes too many internal nutrients, which is unfavorable for the next year's growth. Therefore, in winter the banana shrub is best kept at a room temperature of 5°C to 15°C.
5. Fertilizing: The banana shrub likes fertilizer. It is usually given decomposed cake fertilizer, bone meal, chicken and duck manure, and fish offal and intestines, brewed into a liquid fertilizer and mixed with water. During the growing season (April to September), apply fertilizer once about every 15 days, and stop fertilizing during the flowering period and after October. If the leaves are found not to be bright and deep green, apply one dose of dilute fertilizer water.
6. Pests: The banana shrub often suffers from scale insect damage, which can also induce sooty mold. Scale insects can be brushed off with a small brush, or killed by spraying No. 20 petroleum emulsion diluted with 150 parts water; sooty mold can be prevented and controlled by wiping with clean water or spraying a carbendazim solution diluted with 500-1,000 parts water.
7. Pruning: The banana shrub should not be pruned excessively. Normally, after flowering, prune the leggy branches, diseased and weak branches, and overly dense, crossing branches that affect the plant's shape, and remove the fruits after flowering to reduce nutrient consumption. Before bud break in spring, thin out some old leaves appropriately to stimulate new branches and leaves.