Hydrangeas always dry up after the leaves turn yellow, what s the matter?

Judge with Xiaoqing what is the reason for the yellowing of the fallen branches of hydrangea.

Hydrangea is a plant of the genus Hydrangea in the family Saxifrageae. Lack of sufficient nutrients during the growth process can lead to problems such as yellowing of leaves and wilting of leaves. Sometimes, when hydrangeas are attacked by pests and diseases, the leaves will also turn yellow and wilt.

Generally, the yellowing of hydrangea leaves is caused by insufficient nutrition. It is recommended that the state imitate: top dressing outside the roots.

Fertilization in this method is mainly to make up for the lack of nutrients in the soil, so as to solve the problem of lack of fertilizer in the plant, so that the seedlings grow fast and the flowers and fruits grow hypertrophied. Extra-root fertilization is to spray the dilution of the fertilizer return material directly on the leaf surface of the plant with a mist, so that the nutrients can penetrate into the tissues of the leaf socks through the leaf epidermal cells and stomata and then be transported to the whole body of the plant. It is recommended to use the house treasure blue bottle to spray the hydrangea leaf surface regularly, the nutrient absorption is faster and more sufficient, and the leaf spot, leaf blight, stem rot and other diseases of the hydrangea are removed, so that the hydrangea is fully nutritious and no longer yellows the dead leaves, and has the effect of promoting flowers and flowers.

Regular use of Zhaiqibao blue bottle care can also prevent the occurrence of leaf spot, leaf blight and stem rot, and ensure that the leaves are green and the flowers are gorgeous.

The solution to the yellowing of the hydrangea leaves and the dry edges is as follows:

1. Improper watering. Hydrangeas like a moist growth environment, and need to replenish water in time for high temperatures in summer, or they are not easy to dehydrate and turn yellow. In addition, hydrangeas do not like too humid environments, resulting in rotten roots and yellowing and drying of hydrangea leaves.

Therefore, when we maintain it daily, we should follow the principle of watering to see dry and wet, and then watering the soil after the soil is completely dry.

2. Improper lighting. Hydrangeas are suitable for growing in a semi-shady environment, and they should be placed indoors under astigmatism, especially in summer, when they are exposed to sunlight, it is easy to make the leaves of hydrangea yellow and dehydrated. Therefore, when maintaining hydrangeas, do not put them in direct sunlight in summer, and if the light is too little, they should be placed in a sunny and ventilated environment.

3. Soil alkalization. Hydrangeas like acidic soil, if the soil is alkalized, it is easy to cause plant growth discomfort, the leaves of the plant are yellow, and the later stage slowly withers. If this is the case, the best way is to simply change the pot of slightly acidic soil, then transplant the hydrangea into it, and then take care of it.

4. Improper fertilization. Hydrangea is a fertilizer-loving plant, if you do not fertilize for a long time, it will cause the nutrient deficiency of hydrangea, the most direct manifestation is that the hydrangea leaves begin to wither and yellow, in addition, if the fertilizer is excessive, it will also cause fertilizer damage, resulting in root burning and leaf burning. Therefore, when fertilizing hydrangeas too much, it is necessary to pay attention to increasing the amount of watering, and to replace the soil appropriately to reduce the fertilizer in the soil.

Hydrangea Introduction:

Hydrangea, also known as wood hydrangea, hydrangea, hydrangea, hydrangea viburnum, pink ball flower. It belongs to the genus Hydrangea in the family Saxifrageae, deciduous shrubs or small trees. The leaves are opposite, ovate to ovate-elliptic, covered with stellate hairs.

Blooms in summer, with clusters at the top of the branches and high white neutral flowers on the edges. The flowers are green at first, then turn white, and have a clear fragrance.

Because of its shape Bicha ruler like hydrangea, hence the name. It is native to central and southwest China. He likes dampness and is afraid of drought and waterlogging.

Hydrangea is a common garden flower, and its umbel-shaped inflorescences are like snowballs, clustered among oval green leaves, which is very beautiful. Flowers that bloom from summer to autumn. Hydrangea of its kind.

There are scenic spots all over Japan.

The causes and solutions for the yellowing of the leaves of hydrangeas are as follows:

1. Iron deficiency or soil alkalization.

There are many reasons for the yellowing of hydrangea leaves, but most of the common leaf yellowing is caused by physiological iron deficiency. Because it is an acidic plant, if it is planted in alkaline soil or watered with more alkaline water or fertilizer for a long time, resulting in a lack of soluble iron in the soil, the leaf color will gradually change from green to yellow. After the plant is damaged, the young leaves at the top of the branches show yellow leaves, the mesophyll turns pale yellow or yellow, but the leaf veins are still green, with the development of the disease, the whole leaf becomes yellowish-white, the leaf edge is scorched, and withers and falls off by itself.

When found, ferrous sulfate, or potassium dihydrogen phosphate solution, or 150 250 times edible rice vinegar solution should be poured every 10 20 days (the most mountainous ambush is used in turn, or foliar spraying), 3 or 4 times in a row can make the leaves turn from yellow to green, and can also make the alkaline soil slightly acidic. It can also be mixed with sulfur powder in the cultivation soil (1 cubic soil mixed with 100 200 grams of sulfur powder), and its validity period can be maintained for 2 3 years; In the spring and autumn growth period, apply alum fertilizer water or ferrous sulfate solution every half month, which can prevent the occurrence of yellowing disease, promote the flourishing of branches and leaves, and the leaf color is thick and green.

2. The light is too strong or insufficient.

Hydrangea is shade-tolerant, avoid direct sunlight, and grow well under scattered light. If the leaves are yellow and whitish in summer, and there are chloasma spots, it is caused by sunlight burns and too strong light, and it should be moved to a cool and ventilated place to prevent direct sunlight. At the same time, water is often sprinkled on or around the leaves to increase air humidity, so that most of the lightly damaged leaves can return to green.

If the light is insufficient, the branches are slender and long, the internode spacing is long, the leaves are thin, large and thin, and the leaf color is yellow, the light time should be increased and it can be recovered slowly.

3. Improper watering.

Hydrangeas like moisture, but are afraid of standing water and drought. If you water too much, the potting soil is hypoxic, resulting in root rot, and the leaves will gradually turn yellow, dull, or even fall off. After the rain, the water in the basin hall should be poured out in time; If the watering is too little, the potting soil is too dry, it will cause the root system to often not absorb water, the leaf tip is dry and yellow, and the lower leaves are yellow and fall off, at this time, a small amount of water should be watered first, and then watered thoroughly after half an hour, and at the same time spray water on the branches and leaves.

Therefore, hydrangea watering should be dry and thorough, and do not water half of the water (waist water).

4. Excessive fertilization or long-term lack of fertilizer.

In the process of fertilization, if the top dressing is too concentrated or applied to the fertilizer, it is easy to cause "burning roots", resulting in the leaves are scorched and fall off, at this time, the fertilization should be suspended, and the amount of watering should be increased, so that the fertilizer flows out of the drainage hole at the bottom of the pot or immediately poured into the pot to remove the fertilizer, and then rinse the soil with clean water after teasing the stove, and replace it with new culture soil. If there is no soil change and fertilizer for a long time, especially the lack of nitrogen fertilizer, the nutrients are insufficient, and the leaves will lose green and yellow, at this time, they should be replaced with new nitrogen-containing fertile and loose soil in time, and water thin liquid fertilizer or compound fertilizer every 10 days or so, and pay attention to timely watering "soul" water, soon, the leaves will turn from yellow to green.

Remedies for yellowing hydrangea leaves and dry edges include: blocking from strong light, watering moderately, and replacing the soil.

1. Block strong light

Hydrangea is resistant to shade and late cavity, afraid of the sun, afraid of strong code light, exposed to direct light for a long time, the leaves are easy to dry up, at this time to shade as soon as possible, potted hydrangea should be moved to the shade and ventilation of the circle, the ground can be planted in the upper part of the cover of a layer of shade net.

2. Watering appropriately

Hydrangeas like moist soil, not drought tolerant, lack of water will hinder growth, resulting in yellow and dry leaves, when breeding hydrangea, to water every 1 week, keep the soil slightly moist, can not let the plant grow in the dry soil.

3. Replace the soil

Hydrangea likes soft and breathable soil, if you do not change the soil for a long time, the soil compaction is serious, it will hinder the root respiration, so that the edge of the leaf is dry, at this time to change the soil for the hydrangea, it is best to change the potting soil once a year when the potting is maintained.

The flower language of hydrangeas

1. Hope: When it blooms in winter, it seems to tell us that spring is coming, and spring usually represents hope, so its first flower language is hope.

2. Loyalty and eternity: It refers to the loyalty to love and the eternal love between two people, which has a very special meaning and also tells people that there are many beautiful things in the world.

3. Happiness and reunion: Its flowers are spherical and rely on each other tightly, which is like the feelings between family members, no matter at any time, they will be reunited again.