Pinnate compound leaves alternate, with yellow flowers, fragrant flowers, about 2 mm in diameter, bisexual pedicels slightly short and thick, calyx 5-lobed, petals 5, rectangular; Berries are nearly spherical, long 10- 12 mm, and the flowering period is between summer and autumn.
Potting technique
Milan is a subtropical tree species, which is produced in Fujian, Guangdong, Sichuan, Yunnan and Southeast Asia. I like a mild and humid climate.
Milanhua
Because Milan is a southern plant, it is difficult to cultivate in Beijing, especially indoors, so it needs careful conservation.
There may be many reasons for falling leaves in Milan, such as soil pH, water pH and fertilizer problems.
Some technical points of Milan's breeding in the north are as follows: Milan mostly uses peat, rotten leaves and surface sand for planting in the north. Families can use (old) Clivia soil and plain sand to cultivate soil. The basin should not be too big, and alkaline fertilizer should not be added to the soil. The bottom of the basin should be padded with drainage layer. After planting, put the seedlings in the shade for maintenance. When the weather is dry, spray water on the leaves and the surrounding ground every day to keep the environment moist. After the new leaves grow, they will move to the shade, and then gradually adapt to the strong light, and the flowers will be more fragrant. Potted flower seedlings in spring should be topdressing before and after the arrival of beginning of autumn, especially rare organic liquid fertilizer.
From the second year, in the peak season, topdressing organic liquid fertilizer once every 20 days. If it can be applied alternately with the mixed solution of 0. 1% urea and 0.2% potassium dihydrogen phosphate, the flowers and leaves will flourish more. Pot soil should always be moist, and it should not leak because of drought, but it should not be moist for a long time. If it is placed indoors to strengthen ventilation, it will be rotated to the outside in about 15 days. When you are indoors in winter, you need to see enough sunshine, and the lowest indoor temperature should not be lower than 8℃. Control water and prohibit fertilizer, pay attention to the door and window switches to avoid direct cold air blowing and smoke pollution. Scale insects and the prevention of sooty blotch.
In North China, after the dry wind from late April to early May, it will be moved to outdoor maintenance. Milan can change pots every two years. Milan should start pruning and shaping from the seedlings, leaving a section of trunk with a height of 15cm to 20cm. Don't let the main branches grow out of the soil, but prune them at the height of 15cm above the main branches to make the plants plump. Because Milan draws flowers in the axils of new leaves, it is generally not trimmed. However, Milan often has a small number of dead branches after being cultivated indoors or outdoors for the winter, so it is necessary to prune these dead branches at any time to keep them beautiful and conducive to growth. When it grows too densely, it can also prune some non-flowering internal branches and horizontal branches appropriately to facilitate lighting and ventilation and make it grow better. Therefore, it is advisable to cut it every other year in high temperature season, so as to promote the germination of adventitious buds at the lower part of the main branch and grow new lateral branches, so that the tree can maintain a symmetrical posture, the tree is vigorous and the leaves are lush.
If the potted plants grow tall and big in a few years, and it is difficult to put them indoors, they can be propagated by high pressure with too many branches or trimmed with too dense parts to make them have more lateral branches and flowers, or they can be bent and shaped to improve their ornamental value. [4]
Overwintering management
Milan is native to the tropics and can't stand the low temperature. Generally, when first frost arrives in beginning of winter, he will move indoors and put it on a sunny windowsill or desktop. The indoor temperature should be kept at 8- 10℃, preferably not lower than 5℃. If the temperature is too high, the shoots will grow, reducing adaptability and cold resistance. Plants should not be close to stoves or furnaces; Using plastic cover can adjust the temperature and humidity, but it is necessary to cut one or two cracks at the top of the cover to avoid excessive temperature and humidity and affect normal growth.
When the soil is dry, water it slightly, but don't fertilize it. When the weather changes suddenly and the indoor temperature drops below 5℃, special measures should be taken to keep warm, such as moving potted flowers under the table at night, hanging a cloth curtain on the table, and keeping warm with a grass curtain under it; You can also put a plastic bag on the flowerpot, remove the cover curtain when the sun comes out the next day, and bring the potted flowers back from under the table. In Milan, it is not advisable to open the window for ventilation, so as not to be hurt by the cold wind.