Why Are Anthurium Leaves Turning Yellow with Scorched, Dry Edges?

Anthuriums can be seen in many places. They are ornamental, with unique flowers and bright colors, and are very popular. When growing anthuriums, one problem comes up often: anthurium leaves turning yellow. Below, we introduce the causes of yellowing anthurium leaves and the solutions.

If you notice an anthurium leaf turning yellow, observe the other leaves carefully. If the leaves are a fresh, tender yellow-green and the flowers are growing well, it means new leaves are growing, and old leaves turning yellow and dropping off is normal.

In most parts of the north, the medium and water contain relatively high levels of salt and alkali. Because the medium lacks the soluble iron the plant needs to absorb, the leaves gradually lose their green color and turn yellow. Solution: treat the medium and the watering water with oxalic acid or similar.

When the new leaves of an anthurium turn yellow while the old leaves remain normal, this is usually caused by watering too much and too often, which keeps the potting medium overly wet for a long time or even waterlogged, causing some of the fibrous roots to rot, hindering normal respiration and nutrient uptake, and leading to leaves gradually turning yellow and dropping off. Solution: water normally.

When the air indoors is too dry in winter when growing plants, the leaf tips often dry out and turn yellow, or the leaf margins become scorched, or scorched spots and curled edges appear on the leaves. Solution: according to the growth characteristics of the anthurium, appropriately increase the air humidity.

If an anthurium is kept for a long time in a shaded spot or a place with insufficient light, its growth will weaken, the leaves will be thin and yellow, and it will not bloom or will bloom very little. Solution: according to the growth characteristics of the anthurium, appropriately increase the light intensity.

If the indoor temperature is too low in winter, the leaves will turn yellow; if the room temperature is too high, the plant transpires excessively and the roots cannot supply enough water and nutrients, which also turns the leaves yellow. Solution: keep the temperature in the greenhouse relatively stable.

Fertilizing too little, or not repotting or changing the soil for a long time, means the soil lacks nitrogen and other nutrients, so the branches and leaves become weak, and the leaves thin and yellow. In addition, over-fertilizing can also cause new leaves to be thick and uneven, while the tips of old leaves dry out and turn scorched yellow and drop off. At this point, stop fertilizing immediately, increase watering, remove some of the old soil, replace it with fresh potting soil, and carry out normal care.

1. When yellow leaves appear on an anthurium, check carefully for root rot, and cut away any rotten roots promptly.

2. Overwatering or excessive light can both easily cause yellow leaves and curled edges, so adjust the position of the pot.

3. Anthuriums have wide leaves and large flowers, so when misting, also wipe the flowers and leaves at the same time. Keeping them fresh and clean is the key to a beautiful plant.

4. Anthurium flowers are slightly toxic, with the toxin mainly in the sap. Never ingest them, and wash your hands after every care session.

5. Anthuriums are best grown outdoors, or in a well-ventilated corner that is not easily touched.

As for the pot size for anthuriums, generally it is best to plant one plant per pot. Once a smaller plant has grown to nearly fill the pot, it can be placed permanently in a pot with a diameter of 20 to 25 cm.

Anthuriums like loose, fertile soil. Use a mix of peat soil, leaf bran and perlite in a 3:2:1 ratio as the potting mix.

As introduced before, anthuriums like moisture. In summer and autumn, during dry periods, it is best to keep the pot moist, and regularly mist the leaves or the surrounding area to increase humidity. Winter is the flowering season, and anthuriums bloom in winter, haha, so at this time be sure not to let them go short of water. Even though winter is colder, do not water too much; water appropriately. A reminder: when the anthurium is blooming, do not spray water on the flowers, as that easily damages them.

For fertilizing anthuriums, we should wait until spring, when new leaves appear, to start fertilizing. Generally, fertilizing about 10 times is enough. In the last part of autumn, once the temperature drops by 15 degrees, stop adding fertilizer. So at the end of autumn, in winter, and in the first few days of spring, do not fertilize. Anthuriums like fertilizer but cannot tolerate too much of it; everything must be in moderation.

Why Are Anthurium Leaves Turning Yellow with Scorched, Dry Edges?

Anthurium Leaves Turning Yellow with Scorched, Dry Edges - The Plant's Own Growth

Metabolism

If you notice an anthurium leaf turning yellow, observe the other leaves carefully. If the leaves are a fresh, tender yellow-green and the flowers are growing well, it means new leaves are growing, and old leaves turning yellow and dropping off is normal.

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 they do not affect flowering.

Bacterial infection

When an anthurium shows symptoms of yellowing, drying leaves, it is very likely to have been harmed by bacteria. You can spray a 0.3% garlic juice solution, 0.2% vinegar, or use special chemicals such as carbendazim or chlorothalonil for treatment.

Anthurium Leaves Turning Yellow with Scorched, Dry Edges - External Environment

Unsuitable soil

In most parts of the north, the soil and water contain relatively high levels of salt and alkali and lack the soluble iron the plant needs to grow. Not changing the soil for a long time causes nutrient deficiency in the plant, and the leaves gradually lose their green color and turn yellow.

You can buy specialized acidic soil at a flower shop, or treat the existing soil. Add oxalic acid to the soil to change its acidity and alkalinity. You can also water with acidic water once a week, using diluted lemon water or edible vinegar.

Dry air

Anthuriums need relatively high air humidity to grow, and when the air indoors is too dry in winter when growing plants, the leaf tips often dry out and turn yellow, or the leaf margins become scorched, or scorched spots and curled edges appear on the leaves.

According to the growth characteristics of the anthurium, appropriately increase the air humidity and frequently mist the leaves and the surrounding environment. In winter care, keep the plant as far as possible from radiators and air-conditioner vents.

Insufficient light

If an anthurium is kept for a long time in a shaded spot or a place with insufficient light, its growth will weaken, the leaves will be thin and yellow, and it will not bloom or will bloom very little. During the flowering period, place the plant in a spot with plenty of light but no direct sunlight, and appropriately increase the light intensity.

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 transpires excessively and the roots cannot supply enough water and nutrients, which also turns the leaves yellow. In winter, people usually move plants indoors to a spot near doors and windows, and as doors open and close, the sudden changes from cold to hot can cause leaves to turn yellow. Therefore, keep the indoor temperature relatively stable.

Anthurium Leaves Turning Yellow with Scorched, Dry Edges - Manual Care

Overwatering

When the new leaves of an anthurium turn yellow while the old leaves remain normal, this is usually caused by watering too much and too often, which keeps the soil in the pot overly wet for a long time or even waterlogged, causing some of the fibrous roots to rot, hindering normal respiration and nutrient uptake, and leading to leaves gradually turning yellow and dropping off.

Promptly drain the standing water from the pot. If the plant has been in an overly wet soil environment for a long time, take the plant out of the pot, let the soil dry in the sun, and replant it. Then water normally, and the leaves will gradually regain their green color.

Uneven fertilizing

Fertilizing too little, or not repotting or changing the soil for a long time, means the soil lacks nitrogen and other nutrients, so the branches and leaves become weak, and the leaves thin and yellow. In addition, over-fertilizing can also cause new leaves to be thick and uneven, while the tips of old leaves dry out and turn scorched yellow and drop off.

If too little fertilizer has been applied, add trace mineral elements; you can use fully water-soluble fertilizers such as "Flower Duoduo". For leaf yellowing caused by over-fertilizing, stop fertilizing immediately and increase watering. In severe cases, remove part of the old soil, replace it with fresh soil, replant, and then carry out normal care.

What to Do When Anthurium Leaves Turn Yellow with Scorched, Dry Edges

What to Do When Hydroponic Anthurium Leaves Turn Yellow

Many people generally believe that hydroponic plants are easier to keep alive and switch to hydroponics, but in fact hydroponic plants also run into many problems. So what do you do when hydroponic anthurium leaves turn yellow? Below, we introduce the solutions for yellowing leaves in hydroponic anthuriums.

Causes of Yellowing Leaves in Hydroponic Anthuriums

In fact, the most important thing in hydroponic anthuriums is the water. The plant gets most of its nutrients from the water, and part of them from photosynthesis. If water is not added to the hydroponic container in time, the nutrients in the water are insufficient, or there is not enough light, any one of these will cause anthurium leaves to turn yellow.

How to Handle Yellowing Leaves in Hydroponic Anthuriums

Add water in time

Regularly check the water level in the hydroponic container. When the water level drops below 1/3 of the roots, replenish the water promptly. As long as there is enough water in the hydroponic container, there is no need to sprinkle water on the leaves every day; if the leaves get dirty, just gently wipe them with a damp cloth.

Add nutrient solution at the right time

How often you change the water for a hydroponic anthurium does not really matter; the key is to get the nutrient solution concentration in the water right. Over time, the water is absorbed by the plant, and the daily process of adding water actually completes the step of changing the water.

So to ensure there are enough nutrients in the water, add a few drops of nutrient solution when adding water to the container. As for exactly how many drops, you can be flexible according to how well the anthurium is growing. At minimum, add two drops each time, then observe the plant's growth: if it is normal, keep it as is; if growth is poor, add a little more.

Supplement sunlight

Compared with soil-grown anthuriums, hydroponic anthuriums need more sunlight, with 2 to 3 hours of direct sunlight every day (avoid direct sunlight at noon). Getting more sun in winter can prevent the branches and leaves from becoming weak and yellow.

Why Are Anthurium Leaves Turning Yellow with Scorched, Dry Edges?

Anthurium Leaves Turning Yellow with Scorched, Dry Edges - The Plant's Own Growth

Metabolism

If you notice an anthurium leaf turning yellow, observe the other leaves carefully. If the leaves are a fresh, tender yellow-green and the flowers are growing well, it means new leaves are growing, and old leaves turning yellow and dropping off is normal.

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 they do not affect flowering.

Bacterial infection

When an anthurium shows symptoms of yellowing, drying leaves, it is very likely to have been harmed by bacteria. You can spray a 0.3% garlic juice solution, 0.2% vinegar, or use special chemicals such as carbendazim or chlorothalonil for treatment.

Anthurium Leaves Turning Yellow with Scorched, Dry Edges - External Environment

Unsuitable soil

In most parts of the north, the soil and water contain relatively high levels of salt and alkali and lack the soluble iron the plant needs to grow. Not changing the soil for a long time causes nutrient deficiency in the plant, and the leaves gradually lose their green color and turn yellow.

You can buy specialized acidic soil at a flower shop, or treat the existing soil. Add oxalic acid to the soil to change its acidity and alkalinity. You can also water with acidic water once a week, using diluted lemon water or edible vinegar.

Dry air

Anthuriums need relatively high air humidity to grow, and when the air indoors is too dry in winter when growing plants, the leaf tips often dry out and turn yellow, or the leaf margins become scorched, or scorched spots and curled edges appear on the leaves.

According to the growth characteristics of the anthurium, appropriately increase the air humidity and frequently mist the leaves and the surrounding environment. In winter care, keep the plant as far as possible from radiators and air-conditioner vents.

Insufficient light

If an anthurium is kept for a long time in a shaded spot or a place with insufficient light, its growth will weaken, the leaves will be thin and yellow, and it will not bloom or will bloom very little. During the flowering period, place the plant in a spot with plenty of light but no direct sunlight, and appropriately increase the light intensity.

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 transpires excessively and the roots cannot supply enough water and nutrients, which also turns the leaves yellow. In winter, people usually move plants indoors to a spot near doors and windows, and as doors open and close, the sudden changes from cold to hot can cause leaves to turn yellow. Therefore, keep the indoor temperature relatively stable.

Anthurium Leaves Turning Yellow with Scorched, Dry Edges - Manual Care

Overwatering

When the new leaves of an anthurium turn yellow while the old leaves remain normal, this is usually caused by watering too much and too often, which keeps the soil in the pot overly wet for a long time or even waterlogged, causing some of the fibrous roots to rot, hindering normal respiration and nutrient uptake, and leading to leaves gradually turning yellow and dropping off.

Promptly drain the standing water from the pot. If the plant has been in an overly wet soil environment for a long time, take the plant out of the pot, let the soil dry in the sun, and replant it. Then water normally, and the leaves will gradually regain their green color.

Uneven fertilizing

Fertilizing too little, or not repotting or changing the soil for a long time, means the soil lacks nitrogen and other nutrients, so the branches and leaves become weak, and the leaves thin and yellow. In addition, over-fertilizing can also cause new leaves to be thick and uneven, while the tips of old leaves dry out and turn scorched yellow and drop off.

If too little fertilizer has been applied, add trace mineral elements; you can use fully water-soluble fertilizers such as "Flower Duoduo". For leaf yellowing caused by over-fertilizing, stop fertilizing immediately and increase watering. In severe cases, remove part of the old soil, replace it with fresh soil, replant, and then carry out normal care.