What is going on with the yellowing of hydrangea leaves in winter

Hydrangea leaves are yellow, how to tell the cause? Make no mistake.

<> the yellowing of hydrangea leaves may be caused by improper watering, improper fertilization or improper light, unsuitable soil, etc., the root cause is the lack of water and nutrients, and proper watering and fertilization are needed to supplement these necessary elements, but not too much watering or use thick fertilizer to avoid excessive damage.

1. Improper watering.

Water is very important for the growth of hydrangeas, if not watered for a long time, it will lead to drought in the potting soil, unable to absorb water and lose water, which will lead to yellowing of leaves, and long-term loss of water will lead to plant death. If you water too much, it will also affect the aerobic respiration of the roots, resulting in rotten roots and yellowing of the leaves.

2. Improper fertilization.

Hydrangeas are in a state of lack of fertilizer for a long time, which will lead to nutrient deficiency, yellowing of leaves, and weak growth. If the fertilization is too much and the concentration is too high, the root system can not absorb it, and it is easy to form the phenomenon of burning seedlings in the root system. It is necessary to judge whether fertilization is necessary according to the growth of plants, and when fertilizing, it is necessary to cooperate with watering to reduce the concentration and promote absorption.

3. Discomfort in light.

If hydrangeas are kept in a place with less light, the plant will lack photosynthetic limb combustion and cause the leaves to turn yellow. If the skin is not injected in the summer, the plant will be exposed to direct light for a long time, which will take away the water in the leaves and cause the leaves to turn yellow. When curing, you can keep it in the sun with sufficient scattered light, and avoid direct exposure.

4. Soil discomfort.

Hydrangeas prefer acidic soil, if the soil is alkaline or soil compaction will also lead to yellow leaves, the acidity and alkalinity of the soil can affect the selectivity of absorbing nutrients, soil nutrients are insufficient, and the leaves are yellow. At this time, the soil should be replaced with a suitable one, or a small amount of lemon water should be added to the watering to enhance the acidity of the soil.

Stuffy roots:

The common is stuffy roots, in fact, hydrangea yellow leaves are basically related to the root system, the root system is not prosperous, the absorption of water and nutrients is insufficient, it is easy to appear yellow leaves, for stuffy roots, especially the hydrangea bought back, most of them are planted with coconut pran, the root system is too much, the root system is squeezed into a ball, and it is easy to stuffy the roots after watering, we recommend breaking the roots and potting, and try to let the hydrangea grow more new roots.

Iron deficiency:

Of course, hydrangea is a slightly acidic plant, for potted water, it is difficult to satisfy, a little attention to the lack of iron, the typical feature of iron deficiency is the loss of green between the veins, simply put, when the yellow leaves, the leaf veins are still green, of course, if the iron deficiency is serious, it will lead to the curling and withering of the buds.

Fertilizing and burning seedlings:Hydrangea likes fertilizer, but when the root system is not prosperous, it is necessary to thin fertilizer many times, although it is recommended to water and maintain with large water and fertilizer, but for weak seedlings, seedlings with poor root system, it is recommended to thin fertilizer**, organic fertilizer is the same, and the use of sheep manure leads to yellow leaves.

The causes of yellowing of hydrangea leaves include too much light, insufficient moisture, uncomfortable temperature, etc., and the specific analysis is as follows:

1. The light is too strong

Hydrangea likes to grow in a semi-shady environment, it is not resistant to strong light, if its leaves appear yellow, it may be caused by too strong light, at this time you need to cut off the yellow leaves, and then move the plant to a semi-shady environment to grow, to ensure that it has the right amount of scattered light irradiation.

2. Insufficient moisture

The yellowing of hydrangea leaves may also be caused by insufficient water, it likes to grow in a humid environment, so after this phenomenon, it needs to be replenished in time to make the soil in a slightly moist state, and at the same time, it is also necessary to sprinkle water around the plant frequently to increase air humidity.

3. The temperature is uncomfortable

The most suitable growth temperature for hydrangea is between 18-28, it appears that the leaves are yellow, and it may be caused by temperature discomfort, so in summer, we need to maintain it in a cool and ventilated environment, and when the temperature is too low in winter, you can cut off its yellow leaves, and then move it to a warm place indoors for maintenance.

The environment in which hydrangeas grow

Hydrangea is native to China and Japan. Prefers warm, humid and semi-shady environments. The suitable temperature for the growth of hydrangea is 18-28, and the temperature in winter is not less than 5.

Flower bud differentiation takes 6-8 weeks under 5-7 conditions, 20 temperature and good beam degree can promote flowering, maintain 16 after flowering, and prolong the flowering period of the socks. But the high temperature makes the flowers fade quickly.

The hydrangea potting soil should be kept moist, but the watering should not be too much, especially in the rainy season, attention should be paid to drainage, to prevent the vertical waterlogging caused by rotten roots. In winter, indoor potted hydrangeas are better to be slightly drier. If it is too wet, the leaves are perishable.

The reasons for the yellowing of hydrangea leaves include potting soil compaction, too little light, oak hail trapping, too strong light, too much watering, too much fertilization, etc.

1. Potting soil compaction.

If there is a lack of nutrients in the hydrangea potting soil, it begins to compaction, and it is usually not fertilized to supplement nutrients, and the plant will be maltrophied yellow leaves. Usually the more common is iron deficiency yellow leaves, the more obvious symptoms are the leaves are yellow, the veins are still green, especially the newly grown leaves, this symptom will appear.

2. Too little light.

Hydrangea is a very shade-tolerant plant, but it does not need sunlight, and when the light is not very strong in spring, it can be exposed to more sunlight. If the hydrangea lacks sunlight for a long time, the branches of the plant will grow thin, and the leaves will not be so dark green, and will be slightly yellow.

3. The light is too strong.

After summer, with the enhancement of light, it is necessary to transfer the hydrangea to a cool and ventilated place for maintenance, because strong direct sunlight will easily sunburn the branches and leaves, resulting in yellow leaves and dry up.

4. Watering too much.

Hydrangea is actually a plant that is very afraid of waterlogging, usually when watering it, do it dry and wet, don't let the potting soil too wet. If the pot is too wet, the root respiration will be affected, and over time, it will cause damage to the root system, so that it cannot absorb water and nutrients normally, and it will also cause the branches and leaves of the plant to turn yellow. Especially for potted hydrangeas placed outdoors in summer, drain them in time after rain to prevent waterlogging.

5. The fertilization is too thick.

In the process of raising hydrangea, in order to make it grow lush and bloom more, it is necessary to fertilize it regularly to supplement nutrients, but it is often caused by improper fertilization by Liang Nian. When fertilizing, not grasping the concentration of fertilizer solution well will cause burns to the root system of the plant, making the leaves yellow and dry and tipped up.

There can be several reasons why hydrangea leaves turn yellow. First of all, it can be due to a lack of nutrients. Hydrangeas need proper soil fertility and nutrients** to maintain healthy growth, and if the soil is poor or lacks certain key nutrients, the leaves will yellow.

Secondly, overwatering or lack of water can also lead to yellowing of leaves. Too much water can cause suffocation in the root system, resulting in poor nutrient absorption, while water deprivation can affect the normal metabolic activity of plants. In addition, pests, diseases, and fungal infections can also be one of the reasons for the yellowing of the leaves.

Common pests and diseases such as aphids and mites can suck up the sap of plants, causing the leaves to turn yellow. Fungal infections can damage leaf tissue, causing yellowing and browning. For the yellowing hydrangea leaves, the health status of the plants can be improved by adjusting soil fertility, watering appropriately, and timely controlling pests and pests.