Detailed Guide to Precautions for Growing Alocasia macrorrhizos
1. During the growing season, apply a dilute liquid fertilizer based mainly on nitrogen and mixed with phosphorus and potassium once or twice a month. Alocasia macrorrhizos has a certain tolerance for shade, but to keep the leaves glossy green, it is best to place it in a shaded spot on a balcony or in a courtyard during spring and autumn, and move it indoors in summer to a well-ventilated north-facing windowsill, avoiding direct sunlight.
2. The suitable growing temperature for Alocasia macrorrhizos is around 20-25°C. In winter, keeping the indoor temperature above 8°C is enough for it to overwinter safely; low temperatures make it prone to cold damage. In winter, it should be placed on an indoor south-facing windowsill, with watering controlled so that it is watered only when the soil is dry, and fertilization stopped. Every 5-7 days, rinse the leaves once with clean water close to room temperature, and the leaf color can remain deep green. As long as the air is humid, the light is suitable, and nutrients are sufficient, the leaves will be large and spread out, giving high ornamental value.
3. In southern China, Alocasia macrorrhizos often grows wild along ditches and roadsides. It likes a warm, humid, semi-shaded environment. Alocasia macrorrhizos is robust in habit and simple to manage; the growing medium just needs to not be too heavy and sticky. It likes high temperatures and grows vigorously at 30°C. When light is strong, the leaves grow smaller and thicker, and turn yellow, in order to adapt to the strong light. Only when part of the sunlight is blocked and fertilizer and water are sufficient will the leaves grow large and spread out and be full of luster.
4. Alocasia macrorrhizos likes fertilizer; apply fertilizer once every two weeks during the growing period. When short of water, the lower leaves will droop, and if water is replenished in time, they will stand up again. The overwintering temperature for Alocasia macrorrhizos is above 10°C; below 10°C, the leaves will wither and the plant will enter dormancy. During this period, control moisture so the roots do not rot, and when the temperature rises the following year, it will still grow huge leaves. The main reason household Alocasia macrorrhizos dies is that the winter temperature is low and unstable; after the leaves turn yellow and all fall off, continued watering leads to root rot and death.
5. The sap of Alocasia macrorrhizos is toxic (hence the name "Guangdong poison"), and it must not be eaten by mistake or get into the eyes; in severe cases it can be life-threatening.
By following this method, you can grow Alocasia macrorrhizos well. If you still have questions about growing it, follow Four Seasons Plants website, where everything you want to know is here!
What to Do If Alocasia macrorrhizos Leaves Droop and Turn Yellow: Precautions for Growing Alocasia macrorrhizos
Alocasia macrorrhizos is a common household plant. Its stem tissue is rather loose, and it also has certain requirements for growing temperature and humidity. Normally, as long as we water and fertilize it well, we can certainly grow a lush potted plant, but it is also often found that Alocasia macrorrhizos develops yellowing. What exactly is the reason? Let us take a look together now.
What to Do If Alocasia macrorrhizos Leaves Droop and Turn Yellow
1. Temperature causes
In fact, this is a very easy plant to grow, and it can tolerate almost ordinary temperatures, which is to say that in spring, summer, and autumn there is actually not much of a problem. However, it should be noted that this is a plant native to the Americas, so in winter it is best to ensure the temperature is above 10°C, which can very well prevent the leaves from turning yellow.
2. Improper watering
This plant is rather fond of moisture. Yellow leaves are very likely caused by insufficient water supply and overly dry potting soil, causing the plant to lack water and thus develop withered yellow leaves. There is another possibility, which flower-growing friends should be able to guess, namely waterlogging. This situation causes the plant's roots to have difficulty breathing, and nutrient transport fails, which then shows on the leaves as yellowing and wilting. Therefore, when watering, be sure to water evenly and control the amount of water reasonably.
3. Too little light
It is a light-loving plant, so during care it is best to provide light at fixed times every day. The duration is best around three hours. Long-term lack of light is also one of the causes of yellow leaves.
4. Fertilization mistakes
This is very similar to watering. Too much or too little fertilizer can actually cause yellow leaves. You should know that when a plant lacks nutrients, it will show slowed growth and yellowing leaves, while too much fertilizer or fertilizer that is too concentrated will cause the plant to suffer fertilizer damage, burn the roots, and damage the root system, and the plant will naturally wilt and turn yellow. The solution is also the same: carry out fertilization reasonably and appropriately, with the amount based on the size of the flowerpot and the plant.
5. Pests and diseases
This situation is caused by not doing a good job of cleaning the potting soil normally, which then triggers disease. In this case, drug treatment must be carried out as early as possible, and the diseased plants and leaves must immediately be cut off and removed to prevent spread and worsening.
Precautions for Growing Alocasia macrorrhizos
1. Stems. The stem tissue of Alocasia macrorrhizos is rather loose, and if the water quality is poor, it is easily contaminated, causing root rot and stem rot. Therefore, the water in the container must be kept clean. At the same time, when changing the water and the culture solution, the mucus on the tubers and roots should also be cleaned off, and rotten roots should be cut away. Temperature: Alocasia macrorrhizos is a very common household green potted plant, but because it is a tropical plant, it generally does not bloom in the north. However, if the temperature and other conditions at home are suitable, it will also bloom.
2. Temperature and humidity. Alocasia macrorrhizos can only grow well in an environment not below 18°C; if the temperature is below 18°C, Alocasia macrorrhizos will be in a dormant state and stop growing. This is especially important to note for indoor ornamental cultivation. Soil: it does not have high requirements for soil, but it grows best in well-drained sandy loam or humus loam containing organic matter. Because Alocasia macrorrhizos by nature likes a warm, humid, and semi-shaded environment and is not cold-tolerant, during the growing season the potting soil must be kept moist. But it can also tolerate a little drought. Watering: in summer, the flowerpot should be placed in a semi-shaded, ventilated place, and water should often be sprayed around it and on the leaf surfaces to increase air humidity, lower leaf temperature, and keep the leaves clean.
3. Watering and fertilizing. In summer, Alocasia macrorrhizos needs more water, but not excessively; it is suitable to alternate between dry and wet, and there must be no waterlogging in the soil, otherwise the tubers will rot. In winter it goes dormant, so water less and stop fertilizing. Fertilizing: because Alocasia macrorrhizos grows very fast, it is relatively fond of fertilizer. Apply a nitrogen, phosphorus, and potassium compound fertilizer once or twice a month (the nitrogen proportion can be appropriately higher). If a little ferrous sulfate can be applied, the leaves will be larger and greener. Long-term lack of fertilizer easily causes the lower part of the Alocasia macrorrhizos stem to become bare, affecting ornamental value. When the temperature drops and it enters the dormant period, fertilization can be reduced or stopped.
4. Toxicity. If you want to keep an indoor Alocasia macrorrhizos that is small and dainty, then simply wait until its seedlings grow to about one chi and are suitable for placement at home, then immediately spray the whole plant with a 2% paclobutrazol solution. After that, the stems and leaves that grow again will be no more than 40 cm tall, and the leaves will be thick and plump, with very high ornamental value. Spraying once about every six months can produce a good height-control effect. The sap in the leaves of Alocasia macrorrhizos can cause skin itching after human contact, so be careful when touching it.
Hydroponic Pruning Method for Alocasia macrorrhizos
Hydroponic pruning method for Alocasia macrorrhizos: when the root system grows too long and too dense, the old roots need to be appropriately cut away and the long roots shortened, in order to promote the sprouting of new roots and enhance root vitality. In addition, if the plant's roots rot, the rotten roots should be cut away cleanly in time, and the water should be changed once every 1-2 days until the plant sprouts new roots, only then returning to normal care.
Is Alocasia macrorrhizos Toxic?
First of all, everyone should be reminded that the white sap in the stem of Alocasia macrorrhizos is toxic, and the water it drips is also toxic. Accidentally touching or eating its sap will cause discomfort in the throat and mouth, and a burning pain in the stomach. Special care should be taken to prevent young children from eating it by mistake. However, Alocasia macrorrhizos does not belong to the cancer-causing plants.
Secondly, skin contact with the sap of Alocasia macrorrhizos will cause itching or strong irritation, and eye contact with the sap can cause severe conjunctivitis, or even blindness. Eating the stems and leaves by mistake will cause symptoms of nausea and pain, and in severe cases can also cause suffocation, leading to death from cardiac paralysis. Therefore, everyone should best minimize contact with Alocasia macrorrhizos. Families with small children had best not plant it, to avoid poisoning from children touching Alocasia macrorrhizos at will out of curiosity.
Although Alocasia macrorrhizos is good-looking, when planting it we must also pay attention to its problems. If it is not cared for properly, the leaves are especially prone to turning yellow, and we must also be careful of its toxins to avoid unnecessary harm.
How to Grow Alocasia macrorrhizos: Precautions for Growing Alocasia macrorrhizos
Alocasia macrorrhizos, scientific name Alocasia macrorrhizos. It is a relatively high-end evergreen plant. Many people do not understand very well how to grow Alocasia macrorrhizos. Below, we will explain it, and also share the precautions for growing Alocasia macrorrhizos, hoping everyone will pay attention.
How to Grow Alocasia macrorrhizos:
As an evergreen plant, Alocasia macrorrhizos can grow to more than 2 m at its largest. Its leaves are like fans, relatively large, and the leaf stalks are very long, so when the wind blows it feels as if it might topple. The leaf edges are wavy and rather attractive. Generally, short plants are used as household potted plants to decorate the home. So how should such a good plant be grown? Before growing it, you need to know its habits.
Alocasia macrorrhizos is a tropical rainforest plant, so it likes to grow in places with relatively high humidity, and it also needs sufficient sunlight. The most suitable temperature is around 25°C. It is a semi-shaded plant. As for fertilizer, rotten leaf soil and some humus soil can also be used, and the nutrition should be relatively rich. If grown hydroponically, the nutrient solution in the water needs to be replenished in time.
Alocasia macrorrhizos is generally divided into two types: soil culture and water culture, but whether water culture or soil culture, under suitable conditions it will bloom. If Alocasia macrorrhizos is soil-cultured, then its requirements for nutrient-rich soil are not that high, but good ventilation and drainage must be ensured. If the soil is rich in organic matter, it helps its growth, and during cultivation a certain humidity must be maintained in the soil.
As an evergreen plant, Alocasia macrorrhizos grows very rapidly. In the process of growing it to maturity, in order to obtain a healthy Alocasia macrorrhizos that can bloom, a certain amount of fertilizer must be applied, but not too much; eutrophication is not good. With such careful care, the leaves of Alocasia macrorrhizos will grow large and good.
Alocasia macrorrhizos is very fond of sunlight. If it lacks sunlight, its stems will grow relatively weak, and if there is little light, the leaves will also become very thin, which is not conducive to photosynthesis. Regular light and appropriate watering can make the leaves firm.
1. Temperature: it is suitable to grow above 20°C, and basically does not grow in winter. In winter, place it indoors to keep it warm, otherwise it will easily die.
2. Watering: watering should be done carefully and appropriately; water more in summer and less in winter. In soil culture, do not use too much water, to avoid waterlogging. In water culture, water less to avoid flooding.
3. Light: if Alocasia macrorrhizos is exposed to direct sunlight, then transpiration will be excessive and it will then wilt. Therefore, when growing Alocasia macrorrhizos, place it in a shady spot, but it should receive scattered light. In winter, take it out to sunbathe often.
Precautions for Growing Alocasia macrorrhizos:
Alocasia macrorrhizos is relatively easy to keep alive, but if some necessary details are neglected, it can also lead to failure. Moreover, some daily situations with Alocasia macrorrhizos must be dealt with in time. Below are some precautions and solutions to sudden situations.
1. What to do if Alocasia macrorrhizos has root rot
This most easily happens with soil-cultured Alocasia macrorrhizos. If in summer the humidity in the pot is too high or there is waterlogging, root rot may be caused. The solution is to cut away the rotten roots and expose the healthy root parts. Then dry the roots, but not for too long; during this period the leaves and stalks need to be appropriately sprinkled with water. After it heals, plant it in sandy soil and do not water. Later, when it is dry, water it, and place it in a ventilated place.
2. Is Alocasia macrorrhizos dripping water in the morning because it is sick
If the humidity of Alocasia macrorrhizos reaches a certain level, then changes in temperature difference will cause water dripping, and this is where the name Alocasia macrorrhizos comes from.
3. Notes on water culture of Alocasia macrorrhizos
For hydroponic Alocasia macrorrhizos, first pay attention to light, and the water in the container is stagnant water, so the water must be changed regularly to ensure the content in the water and thus ensure root respiration. When changing the water, it is suggested that its roots can be cleaned. Also note that there should not be too much water; just enough to cover the roots.
4. What to do if Alocasia macrorrhizos leaves collapse
If, when watering, care is not taken in watering the leaves and leaf stalks, it will cause the lower part to be wet and the upper part dry, with insufficient water supply, and then the leaves will wilt. Another possibility is too long a period of light; direct sunlight causes transpiration to be too strong, and then Alocasia macrorrhizos falls over. It can be placed in a shady place and then a small amount of water applied to the leaves.
5. What to do if Alocasia macrorrhizos grows too tall
Alocasia macrorrhizos grows too tall because its nutrients are sufficient, so it grows relatively quickly. A 2% paclobutrazol solution can be prepared and then sprayed, and then its height will not exceed 50 cm. It can be sprayed once about every 6 months, which can achieve height control.