Anthurium Growing Methods and Precautions: Is It Toxic, and Why Leaves Turn Yellow with Scorched Edges and Dry Up

Anthurium, also known as flamingo flower and laceleaf, is deeply loved by everyone because of its broad green leaves, spadix like a Buddha's flame, and petals red as fire, full of auspicious and festive meaning. So how do you grow anthurium? Now let us introduce the growing methods and precautions for anthurium:

Anthurium is a perennial evergreen herbaceous plant of the Araceae family. Its leaf surface has a waxy coating, and the center of the heart-shaped leaf is decorated with a spadix inflorescence surrounding an orange spiral-shaped spadix, so it is also called “flame rose” or “ox tongue”. It can bloom all year round; generally, once the plant has grown to a certain stage, flower buds can emerge and bloom from every leaf axil.

Anthurium can also absorb waste gases exhaled by the human body and absorb various harmful gases left over from renovation, while also keeping the air humid and preventing the nasal mucosa from drying out. When anthurium blooms, it looks like a small palm and also like a small flame, making it very suitable for ornamental viewing.

The flower language of anthurium: great prospects, passion, hot blood.

Home cultivation of potted anthurium

Soil selection

Before planting, the soil must be disinfected. However, if the soil you have prepared was bought from a professional store as specialized soil, this step can be skipped. Disinfection is to reduce the chance of anthurium suffering from pests and diseases in the later stages of growth.

Temperature requirements

The most suitable growing temperature for anthurium is 14~35°C. When the winter temperature is below 10°C, anthurium is prone to frost damage, so increase the temperature promptly. When the summer temperature is above 35°C, sprinkle water around the anthurium to cool it down. Summer temperatures are high, so pay attention to ventilation and sprinkling water; in winter, cultivate it in a greenhouse.

Light factors

Anthurium likes sunlight. During the vegetative growth stage, increase light to promote growth; during the flowering period, reduce light to prevent the buds from changing color and affecting the ornamental value. During the growing period, insufficient sunlight makes it difficult to bloom, but anthurium is not suitable for direct sunlight, which will scorch the leaves. The best method is to place the anthurium in a cool place where it receives diffused light, but note that it must not be too shady. This protects it from the scorching of strong light while still allowing refracted sunlight for photosynthesis.

Fertilization guidelines

Anthurium likes fertilizer and has a higher demand for magnesium fertilizer. It is best to go to a professional flower shop and buy foliar fertilizer with a relatively high magnesium content for combined use. Or choose a water-soluble compound fertilizer diluted into a liquid fertilizer to fertilize the anthurium. Anthurium generally uses root topdressing, applying liquid fertilizer about once every seven days. When fertilizing, adhere to the principle of “light fertilizer applied frequently”, preferring less rather than more, because too much will directly burn the seedlings.

Watering matters

Natural rainwater is the best water source for watering flowers; tap water needs to be left to stand. Keep the soil moist often, especially during the medium-to-large seedling stage, when the demand for water is greater; water less during the flowering period. Watering anthurium needs to be carried out according to the degree of dryness of the potting soil. The general watering pattern is once every three days in spring and autumn, once every two days in summer, and pay attention to using a sprayer to mist the leaf surface at noon in summer to increase humidity. In winter, watering once every 5~7 days is enough; when the weather is cold, water between 9 a.m. and 4 p.m. When watering, pay attention to alternating dry and wet conditions, and avoid watering when there is severe water shortage, which affects the growth and development of anthurium.

Controlling humidity

High temperature and high humidity are the environment anthurium likes. Humidity is related to temperature. When the room temperature is above 28°C, we need to manually increase indoor humidity. You can use a humidifier or sprinkle water to increase humidity. When the temperature is below 20°C, just maintain the indoor environmental humidity, and there is no need to water. In winter, even if the indoor temperature is relatively high, it is best not to lower the temperature and retain moisture too much. If the plant's leaves are too wet at night, it will reduce its cold resistance, causing frost damage and making it unfavorable for overwintering.

Pest and disease control

The pests that most commonly occur on anthurium are red spider mites, nematodes, cabbage caterpillars, whiteflies, thrips, snails, and scale insects, among which red spider mites, nematodes, and cabbage caterpillars are the main ones. However, anthurium is very sensitive to insecticides. If insecticides must be used, it is best to choose low concentrations. One point to is that all pesticides containing copper, such as dimethoate, dichlorvos, malathion, parathion, methamidophos, etc., will be toxic to anthurium and are best not used.

How to prune

In order to prevent anthurium from consuming too much, we should promptly cut off dead branches and residual branches during the growing period of the anthurium. As for the pruning techniques for anthurium, there is the saying of “three adjustments and two cuts&rdquo, namely adjusting direction, adjusting the plant, cutting suckers, cutting flower buds, and cutting old flowers.

Precautions for growing anthurium

Proper humidity for a beautiful posture

When growing anthurium, pay attention to moisturizing. Only after truly keeping the humidity required during the anthurium's growing period under our control can we have enough confidence to let the anthurium grow robustly.

Insufficient sunlight makes blooming difficult

Anthurium likes sunlight. During the growing period, insufficient sunlight makes it difficult to bloom, but anthurium is not suitable for direct sunlight, which will scorch the leaves. The best method is to place the anthurium in a cool place where it receives diffused light, but note that it must not be too shady. This protects it from the scorching of strong light while still allowing refracted sunlight for photosynthesis.

Unsuitable temperature makes it difficult to keep alive

When growing anthurium, pay attention to temperature control. The maximum temperature should not exceed 35°C, and the minimum temperature should not be lower than 14°C. Below 10°C, frost damage can occur at any time, so 18°C~28°C is best. Summer temperatures are high, so pay attention to ventilation and sprinkling water; in winter, cultivate it in a greenhouse.

What is going on when anthurium leaves turn yellow with scorched edges and dry up

Anthurium leaves turning yellow with scorched edges and drying up——its own growth

Metabolism

If you find that anthurium leaves are turning yellow, pay attention to observing the condition of the other leaves. If the leaves are fresh tender yellow-green while the flowers are growing well, it means new leaves are growing, and yellowing and falling of old leaves is a normal phenomenon.

Therefore, during the flowering period, promptly remove old leaves and cut off yellowing leaves. Promptly clean up dead branches on the surface of the potting soil so as not to affect flowering.

Pathogen infection

Symptoms of yellowing and drying leaves on anthurium are very likely caused by bacteria. You can spray a 0.3% solution of garlic juice, 0.2% vinegar, or use specialized agents such as carbendazim or chlorothalonil for treatment.

Anthurium leaves turning yellow with scorched edges and drying up——external environment

Unsuitable soil

The soil and water in most areas of the north contain relatively more salt and alkali and lack the soluble iron elements needed for plant growth. If the soil is not changed for a long time, the plant's nutrients will be deficient, and the leaves will gradually lose green and turn yellow.

You can go to a flower shop to buy professional acidic soil, or treat the original soil. Add oxalic acid to the soil to change its acidity and alkalinity. You can also water it with acidic water once a week, using diluted lemon water or edible vinegar for irrigation.

Dry air

Anthurium growth requires relatively high air humidity. When the air is excessively dry in winter when growing flowers indoors, symptoms often appear such as dry and yellow leaf tips, or scorched leaf margins, or scorched spots on the leaves and curled edges.

According to the growth characteristics of anthurium, appropriately increase air humidity and frequently mist the leaves and surrounding environment. In winter care, try as much as possible to keep the plant away from heating and air-conditioning vents.

Insufficient light

If anthurium is placed in a shaded place or a place with insufficient light for a long time, it will lead to weak growth, thin and yellow leaves, and no flowering or very little flowering. During the flowering period, the plant should be placed in a place with sufficient light and no direct sunlight for care, and the light intensity can be appropriately increased.

Unsuitable temperature

If the indoor temperature is too low in winter, the leaves will turn yellow; if the room temperature is too high, the plant will transpire excessively, and the roots will not supply enough water and nutrients, which will also make the leaves turn yellow. In winter, everyone usually moves the plant indoors to a position near doors and windows. When the door is opened and closed, the sudden cold and heat will cause the leaves to turn yellow. Therefore, the indoor temperature should be kept relatively stable.

Anthurium leaves turning yellow with scorched edges and drying up——manual care

Overwatering

When the new leaves of anthurium turn yellow while the old leaves remain normal, this situation is generally caused by watering too much and too frequently, causing the soil in the pot to remain overly wet for a long time, or even waterlogged, causing some fibrous roots to rot, hindering normal respiration and nutrient absorption, and causing the leaves to gradually turn yellow and fall off.

The accumulated water in the pot should be drained promptly. If the plant has been in an environment with overly wet soil for a long time, you can take the plant out of the pot, dry the soil, and replant it. After that, water normally, and the leaves will gradually regain their green color.

Uneven fertilization

If fertilization is insufficient, or if the pot and soil have not been changed for a long time, the lack of nutrients such as nitrogen in the soil will cause the branches and leaves to become thin and weak, and the leaves to be thin and yellow. In addition, excessive fertilization can also cause new leaves to be thick and uneven, while old leaves have dry tips and scorched yellow and fall off.

If fertilization is too little, trace mineral elements should be added, and fully water-soluble fertilizers such as “Huaduoduo“ can be used.” For leaf yellowing caused by excessive fertilization, fertilization should be stopped immediately and watering increased. In severe cases, part of the old soil can be removed, replaced with new soil, and after replanting, managed normally.

Is anthurium toxic?

Flower lovers who want to grow anthurium should first understand whether anthurium causes harm to people. Then the editor here wants to tell everyone that anthurium is toxic, but it will not kill you! Anthurium belongs to the Araceae plant family, and most plants in this family are toxic. Its toxin is contained in the sap, so pay more attention in daily life, do not get too close to it, and remember to wash your hands after pruning branches and leaves. Of course, wearing gloves is even better.