How to care for anthurium in summer? Key points of summer cultivation techniques

How do you care for anthurium in summer? I believe many people have some flowers and plants at home, which not only beautify the environment but also purify the air, and looking at them lifts your mood a little, just like the anthurium I want to talk about today; this flower is beautiful and brightly colored, and is one of the favorites of many flower lovers. Next, I will explain in detail the summer cultivation techniques for anthurium.

I. Water

Anthurium is a variety that is relatively sensitive to salt, so when planting, the pH of the growing medium should be kept between 5 and 6, which is most suitable for anthurium growth. Tap water can also be used to grow anthurium, but compared with tap water, natural rainwater is also a relatively good water source for anthurium cultivation. In the process of growing anthurium, because the growth needs differ at each stage, the water required at the development stage is also different. Therefore, during the seedling stage, sufficient moisture is needed and the dry and wet condition of the pot surface medium should be maintained. During the medium and large seedling stage, growth is fast. In short, all the needs of the anthurium growth stages must be met.

II. Fertilizer

During anthurium cultivation, root fertilization is generally much more effective than foliar feeding, because anthurium leaves have a waxy layer, which prevents good absorption of fertilizer. In autumn, a cycle of 3 to 4 days is generally used. If the temperature is high, we can also water and fertilize every 2 to 3 days, while in summer, watering and fertilizing every two days is enough, and when the temperature is high, at most once a day. It can be seen that the suitable environment also changes because of the climate environment. Two hours after applying liquid fertilizer, rinse off the fertilizer remaining on the leaves, so as to keep the leaf surface clean and prevent bacteria from breeding.

III. Light

Under the influence of photosynthesis, the assimilates produced by the plant will also be few. When light is too strong, the shaded part of the leaves will warm up, causing our leaves to change color. It can be seen that successful light management directly affects how many assimilates the anthurium produces and the quality of the later product. Therefore, to prevent the spathe from changing color, we must use shade protection. Of course, at different growth stages of anthurium, the light requirements are also different, and the specifics should be adjusted according to local conditions.

IV. Temperature

When the weather is hot and the indoor temperature is high, you can lower the temperature by spraying water mist into the air, and you can also lower the temperature by turning on ventilation equipment. In the cold winter, appropriate heating is needed to keep warm and prevent cold damage.

V. Humidity

Anthurium growth requires relatively high temperature and relatively high humidity, so in a high-temperature and high-humidity environment, it is very favorable for anthurium growth. Therefore, a spray bottle can be used to increase indoor humidity.

How to grow the flower anthurium and precautions for anthurium care

Anthurium is brightly colored, and growing it indoors also has the effect of purifying the air, which can make the indoor environment more full of life. If you want to grow a beautiful anthurium at home, you need to understand its cultivation methods to be able to grow beautiful flowers. Below is an introduction to how to grow the flower anthurium.

Anthurium is commonly propagated by division, cuttings, sowing and other methods. To grow anthurium well, you need to master the following techniques:

1. Control room temperature. The best temperature for anthurium growth is 20-25 degrees, the maximum should not exceed 35 degrees, and the minimum should not be below 14 degrees. Too low a temperature will freeze and damage the anthurium. When growing anthurium in summer, ventilation should be strengthened, more water should be sprayed, and shade should be provided. In winter, heating is needed for anthurium.

2. Maintain air humidity. The humidity of the anthurium growing environment should not be lower than 50%, and a high-humidity environment is favorable for anthurium growth. If the temperature is below 20 degrees, a natural room-temperature environment can be maintained. If the temperature is higher than 28 degrees, then spray humidification methods should be adopted to help anthurium growth.

3. Light should not be strong. Direct sunlight and excessively strong light will cause the leaves to turn yellow and dry up. Anthurium is a shade-loving plant, generally placed in a bright place indoors with scattered light, and should not be placed in a position with direct sunlight.

4. Water and fertilizer should be appropriate. Anthurium is very sensitive to salt, and the less salt in the water, the better. Tap water can be chosen for watering. For fertilizer, water-soluble chemical fertilizer can be chosen, applied once every 3 days.

5. Loose soil. For growing anthurium, choose peat soil, leaf chaff and perlite mixed in a ratio of 3:2:1.

Precautions for anthurium care

1. Daily management of anthurium

When anthurium seedlings are transplanted into pots, the flower pots should be loosened regularly to maintain fertility. Placing anthurium indoors in a place facing the sun but without direct sunlight can both maintain temperature and avoid burning the anthurium. In addition, anthurium has a high water requirement and needs moist roots and leaves, so it should be watered in time, and the stems and leaves can often be wiped. In addition, fertilization should be increased according to the growth needs of the anthurium, and attention should be paid to preventing pest and disease invasion.

2. Natural habits of anthurium

Anthurium is named because its flower resembles a human palm. It belongs to the Araceae family and originated in the tropical rainforest regions of South America. The flower shape of anthurium is not large; its leaves are emerald green, and the flower resembles a lying leaf with a glossy sheen. There are many flower colors, mainly bright red, as well as many colors such as pink and white.

Anthurium is a plant originally grown in the tropics. It likes a warm, humid, sunny climate environment. It has relatively high requirements for temperature and moisture, and prefers to grow in a humid and warm environment. Anthurium is not suitable for outdoor planting because especially in summer, the sun is too strong and will burn the anthurium, so it is generally placed indoors or in flower greenhouses for cultivation. Anthurium is suitable for growing in fertile, loose soil with good drainage.

The methods for growing the flower anthurium are as above. For people who have never grown anthurium, seeing this knowledge will certainly be confusing. If you still do not understand after reading it, it is best to consult people who truly understand flower cultivation; only they can teach you how to grow it step by step.

Propagation methods, planting techniques and care precautions for potted anthurium

Anthurium is a perennial evergreen herbaceous flower. It likes a warm, humid and well-drained environment, and is afraid of drought and strong direct sunlight. The suitable daytime temperature for growth is 26-32°C, and the nighttime temperature is 21-32°C. The highest temperature it can tolerate is 35°C, and the lowest temperature it can tolerate is 14°C. It originated in South America and is widely cultivated in Europe, Asia and Africa. Below, I will introduce the cultivation methods and precautions for anthurium.

Growing conditions for anthurium

Anthurium likes a warm, humid and well-drained environment, and is afraid of drought and strong direct sunlight. Its suitable daytime temperature for growth is 26-32°C, and nighttime temperature is 21-32°C. The highest temperature it can tolerate is 35°C, and the lowest temperature it can tolerate is 14°C. The suitable light intensity is 16000-20000 lx, and the ideal relative air humidity (RH) is 70%-80%.

Anthurium originated in tropical rainforest areas such as Costa Rica and Colombia. It often grows epiphytically on trees, sometimes on rocks or directly on the ground. It likes a warm, humid, semi-shaded environment and avoids direct sunlight. It originated in the humid, semi-shaded valley areas of South American tropical rainforests. Through introduction, improvement and greenhouse cultivation using light, temperature and water regulation systems, it is widely cultivated in Europe, Asia and Africa.

Propagation methods for anthurium

Anthurium propagation includes division and cutting propagation, seed propagation, tissue culture and other methods. At present, seeds are mainly obtained through sexual hybridization to cultivate superior plants. However, because anthurium is a cross-pollinated plant, the progeny of highly heterozygous hybrid seeds will show extensive trait segregation and great variation. Therefore, asexual propagation methods such as division, cuttings and tissue culture are often used in production, so as to obtain plants with the same traits as the mother plant.

1. Division propagation

Anthurium has a strong tillering ability. It can be combined with thinning, transplanting and removal of buds for cut flowers to separate small and medium side shoots from the mother plant, and then cultivate the side shoots into new plants. The specific method must be carried out according to the following aspects:

①The division period is mainly in the cool, high-humidity spring. It can also be divided in cool autumn weather. It must not be divided in hot summer or in dry and cold seasons.

②When dividing, attention must be paid to the principle of not harming the mother plant. Side shoots that are too large are not divided, side shoots that are too close together are not divided, and side shoots that are too weak and small are also not divided. Mainly divide side shoots that are relatively easy to separate from the mother plant and relatively robust, with at least 2 main root systems.

③When transplanting seedlings, for division you can use your hands to apply even force to separate the side shoot from the mother plant at the underground stem bud eye. When it is difficult to separate, use a sharp sterilized blade to cut it open at the bud eye. For division by removing buds for cut flowers, first open the soil layer, pay attention to the distribution of the root system and the underground stem bud eye, carefully cut open the bud eye, and then take out the side shoot.

④After cutting, wait until the wound of the side shoot is slightly dry, then temporarily plant it in a cool place to promote rooting and restore growth. When planting, the root system must be spread flat and the plant upright, with support if necessary. Do not water immediately after planting; you can spray water on the leaves to maintain humidity. After 2 days, water or apply dilute fertilizer solution as appropriate.

The disadvantage of division and cutting propagation is slower growth, and the materials are difficult to disinfect, so they easily carry pests and diseases (such as root-knot nematodes, bacteria and viruses, etc.). The cultivation technical requirements for divided plants and tissue-cultured plants are the same; the former are just taller and stronger than the latter.

2. Seed propagation

In breeding, sowing is the main way to obtain new anthurium varieties. The anthurium fruit is a berry type and must be sown immediately after harvest. Before sowing, remove the fruit skin and wash off the fruit flesh to avoid the skin and flesh rotting and becoming moldy and affecting the seed germination rate. The sowing method can use the pure sand germination method, sowing the seeds in clean river sand at a sowing depth of 0.5-0.8 cm, maintaining a certain humidity. Generally, they will germinate in about 15 days, and new leaves will soon grow. When they grow to 5-6 leaves, they can be transplanted into a medium of pure perlite mixed with peat soil or coconut coir in a ratio of 1:2 for temporary planting cultivation.

3. Tissue culture

Tissue culture is a propagation method in which cut pieces of plant material are placed in a culture medium for cultivation to obtain new plants. The whole process is completed under sterile conditions in a laboratory. The propagation material must first be strictly disinfected and undergo virus-free culture to provide a guarantee for obtaining virus-free cloned seedlings.

The propagation materials for anthurium mainly use callus tissue and leaves. The reason for using callus tissue as propagation material is that the obtained cloned seedlings are not prone to variation, but obtaining virus-free callus tissue is very difficult. Leaves are easy to disinfect and relatively convenient to handle. The disadvantage is that the leaves are not smooth, and plants formed through culture are prone to mutation, but this mutation can be controlled artificially.

At the bottle seedling stage, tissue-cultured seedlings complete their growth process under various optimal growth conditions artificially provided. The experimental conditions differ greatly from the external natural conditions. Therefore, it is very necessary to let the bottle seedlings go through a transitional hardening and acclimatization process, so that the bottle seedlings can smoothly adapt to the external natural environment conditions.

[Note] According to different growing conditions, anthurium cultivation methods are also divided into hydroponic cultivation methods and potted cultivation methods. Next, I will introduce the hydroponic cultivation methods and potted cultivation methods for anthurium.

Hydroponic cultivation methods for anthurium

A blooming anthurium stands quietly in the water, with pure roots below and lively flowers above, making people feel full of joy and relaxed and happy. Among foliage hydroponic plants, hydroponic cultivation of anthurium is relatively more difficult. Root rot is more likely to occur. This is related to the characteristics of anthurium itself. The roots of anthurium are aerial roots, and aerial roots are more sensitive to the aeration of the environment. To grow anthurium well, you must control the frequency of changing the water, the volume of water, the dissolved oxygen content in the water, and other conditions.

1. Nutrient solution selection

It is recommended to choose a foliage plant nutrient solution, and it must be replaced once every 7-10 days. Regularly changing the water for anthurium can remove the mucus secreted by the anthurium root system and some algae plants. In summer, when the temperature is high, water should be changed more frequently than in winter. It is recommended to change the water for anthurium once every 2-3 days. Water should not be added too full, to prevent anthurium root rot. It is best to keep about half of the anthurium root system exposed above the water. This can ensure the root system's oxygen absorption.

2. Light and temperature

Anthurium likes semi-shade, and a warm, humid environment is also one of the requirements for anthurium growth. It is afraid of exposure to the sun, so during cultivation special attention must be paid to the placement position. It is best to place it in a ventilated place that also avoids strong light. When growing anthurium hydroponically in summer, note that the surrounding temperature should not be higher than 28 degrees. The relative air humidity should be maintained at 80%. When the weather is relatively dry, spray a moderate amount of water on the anthurium leaf surface. In winter, the temperature for hydroponic anthurium cultivation should not be lower than 14 degrees. Below this temperature, anthurium is prone to cold damage. Pay attention to keeping it warm and increasing the temperature. Also control the air humidity at around 80%, and be sure not to place the anthurium outdoors, otherwise it is very easy to cause cold damage to the anthurium.

3. Oxygenation methods

The difficult problem faced by hydroponic anthurium is that if the dissolved oxygen content in the water is low, it will cause root rot in the anthurium. Therefore, during hydroponic cultivation, the oxygen content in the water should be increased in time. Among them, the simplest method is vibration: fix the flower plant with one hand, and hold the container with the other hand and gently shake it more than 10 times. After shaking, the dissolved oxygen content of the nutrient solution can be increased by about 30%. Or add 1% hydrogen peroxide (3% hydrogen peroxide solution) to the nutrient solution. If conditions permit, a miniature submersible pump or oxygenation pump can also be used to oxygenate the nutrient solution.

[Note] For hydroponic anthurium, a nutrient solution suitable for anthurium growth must be selected, and there must be suitable light and temperature and careful maintenance. When hydroponically growing anthurium, part of the original soil roots can be removed; light root removal is enough. If you want to enhance the root system's aquatic adaptability, you can remove the roots heavily.

Precautions for hydroponic anthurium

1. What should be done if the leaves of anthurium grown in water turn yellow?

Answer: The anthurium needs to be disinfected. It is recommended to buy a hydroponic acclimatization solution from a flower market, used to promote rooting. After dilution, it is safe to use for growing flowers. The water temperature should be close to room temperature, and tap water should not be used directly. Yellow leaves should be pruned off. Generally, flowers will have yellow leaves; just prune them. When the flower grows new leaves again, it shows that it is very healthy.

2. The leaves and flowers of my hydroponic anthurium have now dried up and died. What should I do?

Answer: Too much nutrient solution will cause the leaves and flowers to [dry up]. It is recommended to change the water, but do not add nutrient solution for now.

3. I change the water frequently, but the water of the hydroponic anthurium smells bad, and some leaves turn yellow?

Answer: Yellow leaves can indicate a lack of nutrients. The bad smell of the water is caused by root rot. It is recommended to disinfect the roots, then add a nutrient solution specially for hydroponics, and it can be improved.

4. How should hydroponic anthurium be fertilized?

Answer: For hydroponic anthurium, it is best to choose a special liquid fertilizer for anthurium, because anthurium has a high demand for magnesium, so general compound fertilizers are not only mostly alkaline, but also low in magnesium content. After each water change, drop 1-3 drops into the water; this varies depending on the size of the container.

5. Causes of blackening of hydroponic anthurium roots.

Answer: Hydroponic anthurium should be placed in a bright place in front of a window where diffused light comes in. Unlike soil-grown flowers, hydroponic flowers must not have direct light shining on their root system, otherwise it will inhibit the root system or cause photo-oxidative damage to the roots, leading to blackening of the roots, and in severe cases rot and loss of activity. The rotten roots need to be cut off, and the root system can simply be fully immersed in the nutrient solution.

Potted cultivation methods for anthurium

1. Soil medium selection

The soil medium for planting anthurium must maintain good permeability and not retain water. For home cultivation, you can choose to buy prepared culture soil from a garden store and add some expanded clay pebbles and dry tree bark mixed in (expanded clay pebbles: dry tree bark = 2:1) as the medium. Before planting, the medium needs to be disinfected to prevent anthurium from being affected by pests in the later growth stage.

2. Cultivation temperature requirements

The most suitable growing environment temperature for anthurium should be controlled between 14-35 degrees. In winter, when the temperature is below 10 degrees, it is easy to cause cold damage to the anthurium. Pay attention to keeping the anthurium warm and increasing the temperature. In summer, when the temperature is above 35 degrees, the anthurium should be humidified in time and water should be sprayed around it. If this is done, even at high temperature, if the humidity is high, the anthurium is not easily harmed.

3. How to fertilize correctly

Compared with other foliage plants, anthurium has a higher demand for magnesium fertilizer. For home cultivation, when fertilizing anthurium, it is recommended to buy Magic Kang fertilizer from a garden store and apply it together with foliar fertilizer. Or use general-purpose all-water-soluble compound fertilizers such as Huaduoduo diluted to 800—1000 times liquid fertilizer and apply regularly (no less than once a week). The principle of fertilizing anthurium is to apply less thick fertilizer and frequently apply thin fertilizer.

4. Suitable watering cycle

Water the anthurium according to the dryness of the medium in the pot. In summer, when the temperature is relatively high, it is recommended to water once every 2 days, and at noon also use a spray system to spray water on the leaf surface to increase indoor relative humidity. In winter, it is recommended to water once every 5-7 days. In cold seasons, watering should be done between 9 a.m. and before 4 p.m., to avoid freezing the root system. Generally, in spring and autumn, water once every 3 days. Avoid adding water when the plant is severely short of water, as this will affect the growth and development of the anthurium. During watering, be sure to alternate dry and wet conditions. Do not water when the plant is severely short of water, as this will affect its normal growth and development.

5. Pay attention to controlling humidity

High temperature and high humidity are favorable for anthurium growth. When the indoor temperature is above 28 degrees, the relative air humidity needs to be increased. At this time, tools such as a humidifier can be used to increase air humidity. Temperature and humidity are closely related. When the indoor temperature is below 20 degrees, it is enough to maintain the indoor ambient temperature and humidity. But in winter, even if the greenhouse temperature is relatively high, it is not suitable to reduce temperature and retain moisture too much, because overly wet leaves at night will instead reduce the plant's cold resistance, making it prone to cold damage and not conducive to safe overwintering.

[Note] The hydroponic cultivation methods and potted cultivation methods for anthurium are introduced here. Next, I will introduce the pest and disease control and care precautions for anthurium.

Pest and disease control for anthurium

1. Bacterial leaf spot

Bacterial diseases are almost fatal to anthurium. Bacterial leaf spot shows two types of symptoms:

①It appears on leaves and flowers. In the early stage, water-soaked spots can be seen on the back of leaves and flowers. In the later stage, brown spots appear on the leaf margins, accompanied by yellow halos.

②It appears on the stem. In the early stage, bacteria infect the stem, infect cells through vascular bundles and rapidly spread to the entire plant. In the early stage of the disease, it can be found that the color of new leaves is dull. This is because the vascular bundles are blocked by bacteria, hindering the flow of water and the transport of nutrients in the plant, making the leaf color dull and the leaves yellow. In a relatively short time, it will cause the peduncle and leaves to fall off the plant, and the growing point rapidly rots with bacterial ooze flowing out. Sometimes when the sap carrying bacteria flows to the leaves, water-soaked spots appear on the leaf area, similar to infection of leaves and flowers. The difference is that these water-soaked spots mostly appear near the main vein in the middle of the leaf.

2. Anthracnose

[Pathogen] Fungi of the genus Gloeosporium or Colletotrichum. The symptoms of Gloeosporium disease are round brown lesions formed along leaf veins, after which the lesions join together to form large lesions with brownish-yellow edges, and the diseased part finally dries up. Colletotrichum disease is similar to Gloeosporium disease, with black necrosis on the acervuli, and it will cause flower rot, forming black necrotic spots on the spadix.

[Control] ①Strengthen greenhouse management, ventilate frequently, and promptly clean up diseased leaves and diseased plants. ②Spray drugs promptly in the early stage of the disease, commonly 50% thiophanate-methyl, 80% mancozeb, 75% chlorothalonil, 50% captan, etc. Apply once every 7 to 10 days, for a total of 2 to 3 times.

3. Leaf spot

[Pathogen] Fungi of the genus Septoria. The main symptom is brown spots on the leaves, with the tissue in the center of the spots dead and a ring of yellow tissue outside.

[Control] ①Adjust the fertilizer ratio, increase the application of phosphorus and potassium fertilizer, improve the disease resistance of the plant, and promptly destroy or deeply bury diseased plants and diseased leaves when found. ②For chemical control, 50% captan, 75% chlorothalonil, 50% iprodione, 64% oxadixylM8 can be sprayed regularly, once a week, for 4 to 5 consecutive applications.

4. Cylindrocladium disease

[Pathogen] Cylindrocladium disease is a fungal disease. The main symptoms are that the leaves gradually dry out, become yellow and wilt, and the base of the plant turns brown.

[Control] 5% procymidone, 50% thiophanate-methyl, etc. can be used.

5. Pests

The main pests on anthurium are mites, thrips, noctuid moths, whiteflies, snails, locusts, etc. Among them, noctuid moths occur relatively seriously, even more so after July, occurring in batches one after another about 6-7 times each year, followed by snails. Thrips harm only some varieties, but occur throughout the year. From July to September, mites occur relatively seriously.

Precautions for anthurium care

1. Humidity control

During anthurium cultivation, attention should be paid to moisture retention. If the humidity required during the anthurium growth period can be correctly controlled, the anthurium can grow robustly, with fiery red petals, exceptionally bright colors, and a very graceful posture.

2. Light control

Anthurium likes sunlight. If there is insufficient sunlight during the growth period, it is difficult for it to bloom, but it is also not suitable to let sunlight shine directly on it, as leaf burn will occur. The best method is to place it in a bright shaded place, where it can both avoid strong light burning and receive refracted sunlight.

3. Suitable temperature

Anthurium cultivation requires attention to temperature control. Its suitable growth temperature is 18°C---28°C. The maximum temperature should not exceed 35°C, and the minimum temperature is 14°C. Below 10°C, cold damage may occur at any time. Therefore, when the temperature is high in summer, attention should be paid to ventilation and sprinkling water, and in winter, greenhouse cultivation should be carried out.

The cultivation methods and precautions for anthurium are introduced here. Under normal conditions, it can bloom about 150 days after planting. The flowering period is mostly between summer and autumn. The plant should be watered frequently to keep the soil moist. If the weather is dry, appropriately spray water on the leaf surface to help wash away dust. This reduces the burden of water absorption by the roots. Apply topdressing once about every 15 days. Peanut bran soaked with human urine can be used, and after it is fully decomposed, dilute it 10 times and apply it. This has a significant effect on promoting flowering.