How to grow Aglaia odorata? Potted cultivation methods and precautions

Aglaia odorata is an evergreen shrub or small tree belonging to the genus Aglaia in the Meliaceae family, also known as zhu lan, mi zi lan, shu lan, yu zi lan, and so on. Aglaia odorata is native to China's Fujian, Guangdong, Guangxi, Yunnan and other provinces, and is also distributed in Southeast Asia. It is a common fragrant ornamental plant. Now the editors of Qiangnong Network will take a look with everyone at the cultivation methods of Aglaia odorata!

Growth habits of Aglaia odorata

Aglaia odorata prefers warm, humid and sunny environments, is not cold-tolerant, and is slightly shade-tolerant. Loose, fertile, slightly acidic soil is best, and the winter temperature should not be lower than 10°C.

1. Aglaia odorata prefers warmth, sunlight and fertilizer. The optimal growth temperature is 20°C to 25°C. Under normal circumstances, with sufficient sunlight and relatively high temperatures (around 30°C), the flowers produced have a strong fragrance. If it is placed in a shaded place in summer and at the same time given a large amount of nitrogen fertilizer, this is one of the main reasons Aglaia odorata does not bloom or blooms little and has a faint fragrance. Therefore, during the growth and development period, Aglaia odorata needs to be kept outdoors in a sunny place, and attention should be paid to appropriately applying more liquid fertilizer containing more phosphorus. It is best to apply fully decomposed alum fertilizer water made by soaking crushed bone meal, fish bones, chicken bones, etc. Regularly supplementing with chemical fertilizers containing more phosphorus or fermented rice washing water, etc., all help bud formation, and also result in more flowers, golden yellow color and a delicate fragrance.

2. Aglaia odorata prefers humidity, and watering should be moderate during the growth period. If watered too much, it easily causes root rot and yellowing and falling of leaves; if watered too much during the flowering period, it easily causes flowers and buds to drop; if watered too little, it will cause dry leaf edges and withered buds. Therefore, when summer temperatures are high, in addition to watering 1 to 2 times a day, it is also necessary to frequently spray and wash the branches and leaves with clean water and sprinkle water on the ground where it is placed to increase air humidity. At the same time, fertilization should also be appropriate. Since Aglaia odorata blooms many times within a year, after each flowering, fully decomposed thin liquid fertilizer should be applied 2 to 3 times in a timely manner, so that it can bloom continuously with a rich fragrance. Aglaia odorata prefers acidic soil, and for pot cultivation a growing medium based mainly on leaf mold should be selected. During the vigorous growth period, spraying once a week with 0.2% ferrous sulfate solution results in green leaves and abundant flowers.

Propagation techniques for Aglaia odorata

Aglaia odorata is commonly propagated by cuttings and air layering.

1. Cuttings include hardwood cuttings and softwood cuttings. The former uses old branches from the previous year as cuttings, carried out from April to May; the latter uses semi-lignified branches of the current year, carried out from June to August. The standard for collecting young shoots as cuttings is that the leaves at the branch tips are thick, green, and the axillary buds are plump. The cuttings should be about 10 cm long, retaining 2 to 3 leaves at the upper end, with all other leaves removed to reduce water evaporation and nutrient consumption, and the cut surface should be trimmed flat. The cutting medium can use river sand, expanded perlite, peat, vermiculite, etc. When cutting, first make holes in the cutting medium with a bamboo chopstick, with a spacing of about 5 cm, then insert the cuttings into the holes to a depth of about 1/3 of the cutting. After insertion, press the soil firmly with your fingers so that the soil and cuttings are closely combined, and water thoroughly. Set up a shade frame to maintain a ventilated and humid environment. The speed of rooting of cuttings is greatly related to the temperature of the cutting medium. With a high bottom temperature, rooting is fast. When the bottom temperature is 30°C to 32°C, rooting can occur 40 days after cutting; at 25°C to 28°C, it takes 50 to 60 days to root. However, with a high bottom temperature, leaves evaporate quickly and the cuttings' metabolism is in an active state. At this time, if the humidity is low, it easily causes the cuttings to drop leaves. Once the cuttings drop leaves, there is no hope of survival. Therefore, high temperature must also ensure high humidity, usually maintaining a relative humidity above 85%. Before cutting, soaking the base of the cuttings in 20 ppm to 25 ppm indolebutyric acid for 12 to 24 hours, or in 50 ppm indoleacetic acid for 15 hours, has the effect of promoting rooting.

2. Air layering can be done from May to September, but the best time is during the plum rain weather in June, when the survival rate of layering is high and rooting is fast. Generally, Aglaia odorata layered in early June can successively root after 40 days. The specific method is: select a robust one-year-old lignified branch with a stem thickness of 0.5 mm. Make a ring cut at 20 cm from the branching point, with a ring width of about 0.5 cm, and depth to the xylem. Then apply moss or wet soil to the ring-cut area, wrap it with plastic film, and keep the moss etc. always moist. After rooting, cut it off from the mother plant, first acclimatize it in a shaded place, and then pot it for planting. This method has a high survival rate, and the resulting plants bloom relatively quickly.

Cultivation and management of Aglaia odorata

Although Aglaia odorata has strong shade tolerance, it is not tolerant of long-term shading. Especially when potted Aglaia odorata is in full bloom, it should not be kept indoors for a long time. When flowering, it can be moved outdoors after 4 p.m. and moved indoors before 9 a.m., so that it can receive sunlight and accumulate nutrients for producing new branches and new flower spikes. When moved indoors in winter, it should also be allowed to receive as much light as possible.

Although Aglaia odorata does not have strict soil requirements, a humus-rich, fertile, slightly acidic sandy loam is suitable. When preparing potting soil, use 2 parts peat soil plus 1 part sand, or choose 2 parts fertile garden soil and 2 parts compost soil plus 1 part sand, mixed together.

After seedlings are potted, when they grow to 20 cm to 25 cm in height, they can be pinched back to promote the development of side branches and the early formation of a crown, while also controlling plant height and increasing flower quantity.

When Aglaia odorata is potted, good drainage must be ensured. Watering should be determined according to dry and wet climate conditions, keeping the potting soil moist but not waterlogged for a long time. Maintaining relatively high air humidity is beneficial to the growth of Aglaia odorata. In dry weather and during the vigorous growth period, it is best to spray water on the leaves 1 to 2 times a day.

Aglaia odorata has dense branches and leaves and continuously produces new branches and forms flower spikes during the growth period, so it needs sufficient fertilizer. Insufficient fertility will noticeably reduce flower quantity. For this reason, after growth begins in spring, fertilizer should be applied in a timely manner. Fully decomposed cake fertilizer or sesame paste residue water is good for topdressing. Aglaia odorata cannot tolerate concentrated fertilizer, so fertilization should follow the principle of thin fertilizer applied frequently, especially when topdressing begins in spring, concentrated fertilizer should be avoided. Topdressing should preferably be applied once every 7 to 10 days, and an appropriate amount of superphosphate should also be added to the fertilizer water.

When summer is hot, place Aglaia odorata in a shaded place, such as at the edge of a shade frame, so that it is neither exposed to strong light nor deprived of more sunlight. This is because excessively strong direct light inhibits the growth and development of Aglaia odorata, while too much shade also easily causes leggy growth, weak growth and reduced flower quantity.

According to the temperature requirements of Aglaia odorata, potted Aglaia odorata generally cannot be moved outdoors until after Grain Rain, and in autumn it must be moved indoors for overwintering before Frost's Descent. During overwintering, the room temperature should preferably be kept at 10°C to 12°C. Too high a room temperature easily causes continued growth, which is unfavorable for growth and development the following year. But if the temperature is too low and drops below 5°C, it easily causes cold damage. When Aglaia odorata overwinters indoors, its leaves easily collect dust, affecting normal photosynthesis, so it needs to be rinsed once at regular intervals.

Shaping should begin from the seedling stage, keeping a section of main trunk 15 cm to 20 cm high, and not allowing the main branches to grow in clusters from the ground. Since Aglaia odorata produces flower spikes from the axils of new leaves, it is generally not pruned. If controlling the tree shape and increasing new branches, pinch back before new branches grow, or combine pruning with cuttings.

Pest and disease control of Aglaia odorata

The diseases of Aglaia odorata include stem rot, anthracnose, etc., and the insect pests include white wax cicada, aphids, red spider mites, scale insects, etc.

1. Stem rot: occurs on the stems of Aglaia odorata. At the beginning of the disease, small black spots appear, which after expanding become strip-shaped and dark brown. After encircling the stem once, they cause the plant to die. In the early stage of the disease, 0.5% to 1% Bordeaux mixture can be applied to the branches and trunk; l to 2 degree lime-sulfur mixture or 70% thiophanate 800 times aqueous solution can also be applied, with relatively good results.

2. Anthracnose: Anthracnose is the main disease of Aglaia odorata and occurs mostly from June to October. In the early stage of the disease, the lesions invade from leaf tips and leaf margins, turning the leaf tips brown. It can occur on the plant's leaves, petioles and stems. Control method: when diseased leaves and branches are found, remove them in a timely manner and improve ventilation conditions. A 1000-1200 times aqueous solution of potassium permanganate can also be sprayed.

3. Red spider mites: aphids, etc. can all be sprayed with a 40% dimethoate 1000-1500 times aqueous solution, or with a 1200 times dichlorvos aqueous solution.

Key points for growing Aglaia odorata

1. Suitable temperature: Aglaia odorata prefers warmth. The higher the temperature, the more fragrant the flowers it produces. Generally speaking, when the temperature is above 30°C and under sufficient sunlight, the flowers produced are strongly fragrant; conversely, in an environment below 30°C, if it is also in a shaded place with insufficient light, the flowers produced are not as fragrant as at high temperature. To grow Aglaia odorata well, the suitable temperature range is between 20°C and 35°C, and from June to October it can bloom as many as 5 times.

2. Sufficient light: Aglaia odorata should be placed in a sunny place in all four seasons. If Aglaia odorata is placed in a courtyard or balcony with sufficient light and good ventilation, with daily light of 8 hours to 12 hours or more, the plant's leaves will be deep green, the branches will grow thick and strong, the number of blooms will be greater, the flowers will be bright yellow, and the fragrance will also be relatively rich. If Aglaia odorata is kept in an environment with insufficient sunlight and shade, the plant will have leggy and weak branches and leaves, fewer blooms, and a lighter fragrance.

3. Reasonable fertilization: Aglaia odorata has strong flowering capacity and blooms many times, so nutrients must be supplemented in a timely manner. After each flowering of Aglaia odorata, nutrients should be replenished promptly. Insufficient fertilizer is the main reason Aglaia odorata only grows leaves without blooming or drops leaves and buds. Therefore, when the temperature rises, Aglaia odorata should be moved outdoors for care, and after one week the soil should be loosened and some thin nitrogen fertilizer applied. A 10% to 20% fully decomposed cake fertilizer water or human feces and urine can be used, and thereafter liquid fertilizer should be applied about once every 10 days to promote branch and leaf growth. Starting in June, Aglaia odorata enters the vigorous growth and flowering period, until mid-October. About once every 15 days, a relatively concentrated fertilizer based mainly on phosphorus fertilizer should be applied, or every 15 to 20 days a 0.3% potassium dihydrogen phosphate solution should be sprayed, which will make flowering more abundant. Pay special attention that during the flowering period phosphorus fertilizer must be the main nutrient, otherwise the situation of only growing leaves without blooming will occur. During the flowering period from June to October, if fertilization is insufficient, not only will the number of blooms decrease and the flowers not be fragrant, but flower buds that have already appeared will also wither and fail to open.

4. Water at the right time and in the right amount: the frequency of watering Aglaia odorata must depend on the size of the plant, climate changes, and the placement location, etc., and should be done at the right time and in the right amount. Before flowering, increase the application of phosphorus and potassium fertilizer, and often provide scattered sunlight with moderate watering, and its flowers will have a strong fragrance. Summer is the peak growth season for Aglaia odorata, and water demand increases accordingly, generally watering once a day. On hot and clear days, watering once in the morning and once in the evening is enough. If water is lacking, the leaves will turn yellow or even fall off. If there is a shower, after the rain tilt the pot to pour out water to prevent root rot.

How to grow Michelia alba? Potted cultivation methods and precautions for Michelia alba

Michelia alba has a rich fragrance and a long flowering period, blooming from June to October. Put one flower in your pocket, or place a few in a room, and the fragrance can last for more than ten days. Even after it has shriveled and turned brown, using it to make tea is still very fragrant. For home cultivation of Michelia alba, there should be a relatively large balcony and courtyard, and sufficient sunlight, because it is a sun-loving flower and tree, otherwise it cannot be grown well.

How to grow Michelia alba?

1. Michelia alba is neither drought-tolerant nor moisture-tolerant. In summer and autumn, the weather is hot, evaporation is fast, and water demand is high, so watering must be timely. The potting soil should preferably remain slightly moist. Its roots are thick and nearly fleshy, and it fears waterlogging most, so the potting soil should be a free-draining humus soil. During the plum rain season, do not let it get rained on. If the potting soil remains wet for a long time without drying, it will rot the roots, causing leaves to turn yellow and fall off and the plant to die, which is very difficult to save. This point should be especially noted for Michelia alba overwintering indoors in dormancy, because large white orchids planted in glazed jars have jar walls that are glazed and impermeable, and at this time the plant's transpiration is also low. The surface soil in the jar easily dries while the inner soil is difficult to dry. If you water just because the surface soil looks pale, the potting soil will remain constantly wet and the plant will die. Most cases of people killing Michelia alba by cultivation arise from this problem. Therefore, in winter the potting soil should preferably be slightly dry. Do not water before even the inner soil in the jar has dried.

2. Michelia alba likes fertilizer, but dislikes concentrated fertilizer. In addition to applying sufficient base fertilizer when repotting every 2-3 years, generally after the plant blooms, apply fully decomposed soybean cake water or fishy water once every 7-10 days. Master the principles of thin application, frequent application, and application in the evening. Stop fertilizing after the cool autumn.

3. Michelia alba fears cold and likes sunlight, and should receive more than 10 hours of sunlight daily. Even when brought indoors for dormancy in winter, it cannot be shaded for a long time, otherwise flowering the next year will be affected. It fears cold even more than jasmine. It should be brought indoors for overwintering in early November and can only be taken out for care in mid-April of the following year.

4. Michelia alba is not tolerant of pollution. In addition to not potting it in factory areas, home care should also avoid placing it in the kitchen for overwintering, to avoid oil fume pollution.

Precautions for potted cultivation of Michelia alba

1. Michelia alba has fleshy roots and fears water accumulation most. The potting soil should be well-drained acidic soil, and the bottom of the pot should be lined with 3-4 cm of granular furnace cinder or broken tile pieces as a drainage layer.

2. In midsummer, sunlight is strong, so appropriate shading should be provided around noon, or it should be moved under tree shade for care from June to August. During the peak growth period (May to September), apply liquid fertilizer once every 1-2 weeks, and at the same time keep the potting soil moist regularly. In summer, it is also necessary to frequently spray and wash the leaf surfaces and sprinkle water on the ground to keep the environment humid.

3. In winter, it should preferably be kept indoors for care. During the day, the room temperature should be kept at about 12°C, and at night the minimum should not be lower than 5°C. Just after being brought indoors, watering should not be too little. Around the Winter Solstice, Michelia alba enters dormancy, so watering should be controlled, fertilization stopped, and attention paid to appropriate ventilation.

4. During cultivation, if yellow leaves are found, promptly spray 0.2% ferrous sulfate solution 2-3 times, which can gradually turn the leaves from yellow back to green. Avoid concentrated fertilizer when fertilizing. When repotting every 2-3 years, sufficient base fertilizer must be applied. After flowering, apply thin fully decomposed soybean cake water and fishy water once every 10 days in the evening. Stop fertilizing after the weather turns cool in autumn. It needs more than 10 hours of light per day, and even during winter dormancy it should be placed in a weakly lit or scattered-light place indoors, avoiding oil fume pollution. When overwintering in winter, never move Michelia alba into the kitchen. Yellow leaves on Michelia alba have two situations—iron-deficiency chlorosis and root rot from excessive water.

① Chlorosis: mainly caused by potting soil being too alkaline.

② Symptoms of root rot: the root system turns black and rots, leaves wilt and yellow and fall off, leading to the death of the whole plant. Therefore, normally wait until the surface of the potting soil turns pale before watering, and loosen the soil frequently.

5. Spring care and management. When the flowers fade, promptly cut back to about 3-4 stem nodes below the spent flowers, and at the same time thin out some old stems and overly dense stem nodes to facilitate ventilation and adapt to the home balcony environment. After flowering in March, there is a short dormant period, during which fertilization and watering should be stopped.

6. Summer care. Schlumbergera can grow slowly at 15°C, grows faster at around 25°C when the air is also relatively humid, and when the temperature exceeds 30°C it should be kept in a shaded environment.

7. Autumn and winter care. In early autumn the temperature is still high, so spraying the leaf surfaces and sprinkling water in the environment should continue. Starting in September, Schlumbergera gradually resumes growth. In mid-to-late September, as the temperature drops, sunlight can be seen in the morning and evening. In mid-to-late October, full sun should be provided to promote flower bud differentiation and produce more flower buds. By early-to-mid November, as the temperature turns colder, Schlumbergera should be brought indoors to overwinter, and when brought indoors it should also be placed in a sunny place. However, during the flowering period, direct sunlight should be avoided to prolong the flowering period. In autumn, watering should be appropriate, and the potting soil should still remain moist, neither dry nor waterlogged. Excessive dryness, excessive moisture, a sudden drop in temperature, or too great a day-night temperature difference will all cause flowers and buds to drop.

8. In winter, temperatures are low, and the evaporation of Schlumbergera decreases accordingly, so watering should be watched carefully. There are often cases of root rot and death due to excessive watering in winter. Autumn and winter are the period when Schlumbergera forms buds and blooms. Every 7-10 days, apply a topdressing containing more phosphorus once, and stop fertilizing during the flowering period. Winter temperatures easily change, so good insulation and ventilation work should be done. When the room temperature drops to 5°C, prevent freezing. Cultivating Schlumbergera is common in some households in Jiangnan. When the room temperature cannot be maintained at around 15°C, even with a pot full of flower buds, it is difficult for them to open.

Michelia alba can be exposed to the sun

Michelia alba prefers warmth and sunlight, and needs sufficient sunlight throughout the year. In winter dormancy, when protecting against cold and keeping warm, it should receive a little sunlight. In summer and autumn during the growth and flowering period, it should have even more sufficient light. With sufficient light, it grows well, blooms more and the flowers are fragrant; with insufficient light, branches and leaves grow weak, it blooms less and the fragrance is poor. In addition, water when the potting soil is dry, especially in summer and autumn when temperatures are high, watering should be sufficient and thorough. Water when the potting soil is dry. If the potting soil is too dry for too long, it will cause leaves to turn yellow and fall off, affecting growth. However, note that the potting soil must drain freely to prevent water accumulation, otherwise roots and leaves will also rot. The fertilization method can be like that for Aglaia odorata and jasmine, adopting the method of “thin fertilizer applied frequently.”

Michelia alba drops a large number of leaves in winter

Whenever Michelia alba overwinters indoors or in a greenhouse in winter, it often encounters the phenomenon of dropping a large number of leaves, especially when the greenhouse is sometimes hot and sometimes cold. The reasons are: first, improper dry-wet conditions of the potting soil, sometimes dry and sometimes wet, which the fleshy roots cannot bear, causing leaf moisture to reverse flow and resulting in leaf drop. Second, the room temperature rises, the environment is stuffy and hot, and ventilation is not timely, which can also cause the same situation. Another reason is exposure to cold.

To prevent Michelia alba from dropping a large number of leaves during winter, after the potting soil dries, the amount of water used for a single watering should not be too much. Keep the room temperature between 5-10°C, not too high or too low. Increase environmental humidity and indoor ventilation, and maintain air circulation. In this way, the leaf drop of Michelia alba can be reduced somewhat. In addition, as long as the terminal buds are still healthy, Michelia alba that has dropped leaves will grow new leaves again after warm spring arrives and it is taken outdoors.

How Michelia alba overwinters

Potted Michelia alba brought indoors for overwintering often drops leaves. First, small brown spots and dry tips appear on the leaves, then they fall off. After new leaves grow, they soon fall off again. The main reason is that the room temperature is too high. When the temperature exceeds 15°C, the orchid that has entered relative dormancy sprouts again. After new buds appear, due to the physiological phenomenon of metabolism, the old leaves also fall off accordingly. However, these newly produced leaves and new shoots, because indoor light and temperature conditions are insufficient, are weak and very easily turn yellow and fall.

For home-potted Michelia alba, bring it indoors after the "Autumn Equinox." The room temperature should not be too high; around 10°C is more suitable. Pay attention to indoor air circulation, but do not directly open windows to let cold wind blow on it. Potted flowers should be placed in a place with sufficient light, watering should be controlled, and fertilization prohibited.

After the "Start of Winter," if the temperature drops, a plastic cover can be made to cover the Michelia alba. This not only ensures relative stability of temperature, but also ensures a certain temperature and prevents smoke and dust pollution. Note that the cover should have ventilation openings, to avoid excessive humidity that would promote mold growth. When the room temperature is too high in early spring, try to lower the temperature.

Around the "Pure Brightness" period, on clear and windless noons it can be moved outdoors, placed in a windproof and sunny place, and water sprayed on the leaf surfaces. At night or when a cold wave occurs, it should be moved back indoors. After transitioning this way for a period, when the temperature stabilizes above 10°C, it can be cared for normally outdoors.

How to grow Aglaia odorata, cultivation methods and precautions for Aglaia odorata

How to grow Aglaia odorata? What are the cultivation methods and precautions for Aglaia odorata? Today we will describe the planting and cultivation techniques of Aglaia odorata. Aglaia odorata is also known as shu lan and four-season Aglaia odorata. It is an evergreen shrub or small tree, and the tips of its branchlets are often covered with stellate rusty small scales. Aglaia odorata is a flower plant beloved by people, and its flowers are fragrant when they bloom.

Cultivation methods for Aglaia odorata

Aglaia odorata prefers warm, humid and sunny environments, is not cold-tolerant, and is slightly shade-tolerant. Loose, fertile, slightly acidic soil is best, and the winter temperature must not be lower than 10 degrees. It grows year-round in open forests or shrub forests at relatively low altitudes.

Temperature: the temperature suitable for the growth of Aglaia odorata is 20 degrees to 25 degrees. Generally this temperature is used as the standard, and when its flowering period arrives, if the temperature is kept at around 30 degrees, the flowers it produces will have a strong fragrance.

Fertilization: Aglaia odorata relatively likes fertilizer, but more liquid fertilizer containing more phosphorus should be applied. It is best to apply fully decomposed alum fertilizer water made by soaking crushed bone meal, fish bones, chicken bones, etc., and regularly supplement with chemical fertilizers containing more phosphorus or fermented rice washing water, etc.

Potting soil: cultivating Aglaia odorata generally uses a ceramic pot, and the soil can be loose, well-drained and well-aerated soil, such as a growing medium based mainly on leaf mold. As for repotting, it can be done once every one or two years, and at other times there is no need to pay too much attention to the potting soil.

Precautions for Aglaia odorata

Aglaia odorata blooms many times within a year, so after each flowering, fully decomposed thin liquid fertilizer should be applied 2 to 3 times in a timely manner, so that it can bloom continuously with a rich fragrance. Potted Aglaia odorata seedlings should be shaded, and strong sunlight exposure should be strictly avoided. After the seedlings grow new leaves, fertilize once every 2 weeks, but the amount of watering must be controlled and it should not be too wet. Apart from shading at noon in midsummer, it should receive more sunlight. In this way, Aglaia odorata will not only bloom many times, but also have a rich fragrance.

The above are the cultivation methods and precautions for Aglaia odorata. In fact, Aglaia odorata can also be used as an edible flower, and essence can be extracted, such as Aglaia odorata tea. In addition, potted Aglaia odorata can be displayed in the living room, study and porch, fresh and elegant, soothing to body and mind. In southern courtyards, Aglaia odorata is also an excellent landscape tree.

Further reading:

How to grow Aglaia odorata? Cultivation methods and precautions, fertilization methods, pest and disease control