General information

Causes of yellowing and drying of hydrangea leaves


Hydrangia appeared in England and France at the beginning of the 14th century and was represented by only 2 types: white and scarlet.

Hydrangea bush can grow up to 3 meters in height, but there is a liana-like species that can reach a length of 30 m.

In Europe, only deciduous hydrangias are grown.

Types of hydrangeas

The following types of plants are found:

The flowering period lasts from late spring to late fall.

In inflorescences there are flowers of two types:

  • fertile, or small-fruited,
  • sterile, or barren.

Fertile are in the center of the inflorescence, and barren - at the edges. Some species have inflorescences that contain only fertile flowers. On the hydrangea bush, there are two types of inflorescences: paniculata and scutum.

Hydrangeas are grown with inflorescences of the following colors:

The color of the inflorescences depends not only on the variety, but also on the composition of the soil on which the bush grows. On acidic soils, the inflorescences will be blue, on neutral (pH 5.5) beige, on alkaline, pink or lilac. Blue color flowers hydrangia growing on the sour soil, give aluminum compounds that are contained in acidic soils.

The hydrangea fruit has the form of a box, in which there are from 2 to 5 separate chambers, each of which contains small seeds.

One of the most popular types of hydrangia is the large-leaved species, whose inflorescences have sterile large flowers. About 600 varieties of this shrub have been developed.

Attention! Hydrangea is a poisonous plant, therefore it is prohibited to use it for food.

Features of growing

Hydrangea develops best on acidic soils. For better air penetration into the soil, the ground around the shrub needs to be loosened periodically.

Hydrangea does not grow well in sunny areas, so it is better to choose a place to plant in the shade or partial shade. In the sunny area, the plant develops more slowly, and the flowers become smaller.

Hydrangea grows poorly in sunny areas

Watering hydrangia should be done with separated or rain water, as the shrub does not tolerate lime. Watering time - morning or evening. This will allow the plant to avoid sunburn. Once a week at least 2 buckets of water are poured under an adult bush.

Propagation of hydrangea green cuttings.

Planting is usually carried out in the spring during the absence of night frosts.

2-3 weeks before planting, they dig a hole, up to 0.5 m deep, and with sides up to 0.7 m. Sod, leaf soil, sand and peat are put into it in equal proportions. It is not recommended to prepare an alkaline soil, because its alkalinity is a possible cause of hydrangea disease chlorosis. Further, mineral fertilizers and organic matter are introduced into the landing hole. The root neck of the seedling should be at ground level.

Propagation of hydrangea green cuttings.

Starting from 3-4 years, perform the annual molding of the bush.

What to do if hydrangea dries

First you need to determine the cause of the disease. If the leaf dries, then the reasons for this may be:

  • wrong pH of the soil
  • direct sunlight,
  • watering the plants with tap water
  • lack of moisture in the soil,
  • insufficient or excessive amount of trace elements in the soil.

Incorrect soil composition

For a shrub to develop well, an important condition must be met - the soil can be acidic or moderately acidic. For hydrangea, the pH should be in the range of 4.0-6.0. In the case of alkaline soil, the leaf begins to dry over the entire area.

Attention! From the acidity of the soil depends on the color of the leaves of the plant. Than it is sour, the more dark leaves have hydrangea.

If the soil is alkaline, then the acidity of the earth can be restored by irrigation with acidified water (for example, with the addition of lemon juice).

Insufficient plant nutrition

If the leaves turn black or yellow, then perhaps iron or nitrogen is not enough in the soil.

During the flowering period it is necessary to feed the hydrangea with a complex fertilizer intended for flower plants.

Top dressing of shrub with iron chelate

Also, the lack of trace elements can occur in the spring, when hydrangea begins to actively develop. How to reanimate the hydrangea in this case? For this you need to conduct foliar feeding of the shrub with iron chelate.

However, hydrangia responds poorly not only to deficiency, but also to excess fertilizer. Therefore, after completion of flowering, it is necessary to reduce the dose of fertilizer applied.

Excessive solar lighting

One of the reasons why the leaves dry in hydrangea is that the plant is not in the shade, but in the sun.

Hortensia develops poorly in direct sunlight. Therefore, resuscitation consists in transplanting plants in partial shade or creating artificial shadows using a special shading net.

Excessive solar lighting

If the bush is home and grows indoors, then it is best to place the pot on the west or east window. You also need to ensure that the leaf does not touch the window glass. If the sheet touches the glass, the sun can burn it.

Not enough wet soil

Due to lack of moisture, the leaves of the shrub will eventually dry out.

Hydrangia is a moisture-loving plant, so mandatory regular watering will allow you to get beautiful flowers.

To reanimate a street bush will allow an increase in watering, as well as mulching of the soil. If the bush is indoor, you can use a humidifier. Instead, you can install a container near the flower, which is periodically poured water.

However, the plant does not like too much moisture, as it contributes to the development of root rot.

Use hard water when watering

Tap water contains many impurities, including lime. And hydrangea is sensitive enough to them. Therefore, it is best to use separated water for irrigation. To do this, you can use special open containers that are best located in the sun. In this case, you can get warm and soft water for irrigation.

Root system damage

Hydrangea has a very delicate root system, so plant transplantation must be done very carefully, without damaging the small roots. Damage to them can lead to the fact that the bush will be difficult to take root and be sick for a long time.

Attention! Buying a sapling is a very important matter. It is important to check the status of the root system.

Also, you can not prune the roots during planting. It is allowed to trim the roots only if they are rotten, diseased or damaged by insects. The rotted roots are dark brown in color, and healthy roots are white. Cut locations are processed with crushed activated carbon.

Better survival of the plant can help watering with the addition of Zircon, which is performed 1 time per week.

Errors when choosing a landing site

If the soil is not acidic, but alkaline or neutral, then the plant will be difficult to take root. Therefore, in this case it is necessary to acidify the soil, otherwise the bush may dry out.

If the soil is not acidic then the plant will be difficult to take root.

If a garden is chosen for planting, then it is important not to have a sapling in a draft, it is also necessary to protect it from sudden changes in temperature and undercooling.

Wet blackening

The leaves darken and lose their elasticity. The reason for this may be:

  • sudden changes in temperature
  • susceptibility to drafts of the place where the bush grows,
  • over-watering
  • heavy ground.

Why else garden hydrangea fades. A possible cause is a fungal infection of the plant.

White rot

Fungal disease of the roots. With this disease, the bush gradually dies, because the affected root system cannot provide the plant with the right amount of nutrients.


  • white, resembling cotton wool, scurf on shoots,
  • blackening shoots.

For the treatment of the affected plant, the fungicides Fitosporin, Chloroxide Copper, etc. are used.

Gray rot


  • Flower tissues become soft and watery,
  • The affected parts of the plant die off in a dry environment. After them, there are holes on the stems,
  • In a humid environment, the affected areas are covered with a gray bloom.

Diseased areas are mechanically removed. Then home plants are treated with Chistotsvet, Fundazol or Scor. Garden species are treated with Rovral Flo 255 SC, every three weeks.

The appearance of dark brown spots, up to 6 mm, on the leaves. The affected leaves gradually begin to dry out and die.

Treatment with copper-containing preparations, for example, copper sulphate.

Mealy dew

Formation of yellow-green spots on the leaves. Gradually, the spots darken and become brown. The back of the sheet is covered with a purple or gray bloom. Winter for the sick plant usually brings death.

At the first symptoms of a lesion, the fungicide Phytosporin is used, and in its advanced form, Scor, Topaz or Chistotsvet.

Thus, buying a seedling through a store or on the market, you need to make sure that the young plant is not susceptible to fungal disease.

Disease prevention

Inspection of seedlings and proper care of the plant are the main disease prevention. Be sure during the entire growing season you need to loosen the soil around the plant.

In the spring, the plant can be treated with copper-containing preparations, for example, copper sulphate (100 g per 10 liters of water). You can also use drugs Topaz, Fitosporin, etc.

At the end of spring it is necessary to make nitrogen-containing feedings, in the summer - phosphorus-potassium supplements, and in the fall - phosphorus ones.

How to save a withered hydrangea

If the bush is withered, then you can try to revive it. If the plant is a garden, in the spring all frozen parts are removed. If the plant is affected by rot, the cutting is performed 1 cm below the affected part. Cut places must be covered with ash, activated carbon, etc. After pruning each lesion, the secateurs are disinfected. Treatment bush perform drugs, depending on the disease.

Wood ash for fertilizer

How to revive cut hydrangea? If a withered flower is in a vase, then you need to take it from there, cut it obliquely at the bottom and place the plant in boiling water for 3-5 minutes. After the air bubbles leave the stem, they need to reach the plant, cut off the part that was in the boiling water, and put the flower in cold water. After that, your vase will look smart again.

Dries hydrangea at home in a pot

If the beginning of a houseplant disappears, then it must be brought into the house (if the pot was standing outside), cut off the entire affected part and treat with HOM from fungal lesions.

In the case when even the entire green part has died, the hydrangea will not need to be thrown away anyway. It is necessary to continue to moderately water the land in a pot. Perhaps after that the sleeping buds will wake up, and the plant will grow again.

Why does hydrangea dry up?

The reasons may be many, among them:

  1. Poor watering,
  2. Dry air in the room where hydrangea grows,
  3. Incorrect transplant,
  4. Wrong lighting,
  5. Insufficient soil fertilization (reduced acidity),
  6. No spraying of foliage,
  7. Incorrect choice of soil for planting.

Hydrangea, dry leaves, what to do?

First of all, you need to decide whether the acidity of the soil where hydrangea grows is correct. The optimum pH for the soil in which hydrangea grows is 4.0-5.5. therefore leaves turn yellow due to lack of necessary acidity.

In this case, water the flower with acidified water (5-7 drops of lemon per liter of water). In the future, use special fertilizers.

Hortensia generally needs loose soil to make it easy for air and moisture to penetrate.

Also leaves turn yellow due to lack of iron with nitrogen. Often this occurs during the period of active growth (spring), so do not forget to fertilize.

This should be done since February once every two weeks. In winter, the plant does not bloom, so that at this time of the year root dressing is not needed.

Hydrangea, dry leaf tips.

In this case, the cause is either insufficient watering, insufficient leaf spraying, or too dry indoor airwhere hydrangea grows.

Hydrangea home blooms in spring, lasts a flowering period of 1.5-2 months. So at the time of flowering the plant pleased you with a riot of flowers, which can be from one to seven on one bush, it should be timely water.

Wait for the top layer of potted earth to dry and water again. Water should be defended with warm water, not hard! Hard water may cause disease - chlorosis. The signal will be yellowed leaves with green veins.

Also do not forget to spray the leaves and flowers with water and maintain the humidity of the air in the room. For hydrangea, these two factors must be properly balanced - the air is wet, the soil is wateredBut do not overdo it, the excess moisture is also harmful, the roots will begin to rot.

The main sign of over-wetting is the appearance of black spots with a yellow outline on the leaves..

Hortensia, dry leaves, causes.

Another reason that the hydrangea leaves dry, is considered to be the wrong lighting. Hortense categorically dislikes direct sunlight, so she has no place on the windowsill! It is better to put it on the table near the window, there is a lot of light and the sun will not burn the leaves of the plant, which will simply darken from direct rays.

Hortensia home, dry leaves after transplanting.

Another important process in the care of hydrangea is its transplant, since improper transplantation will result in drying of the leaves and flowers of the plant. Home hydrangea grows for four years, then you plant a new one.

In order to transplant hydrangea take a wide pot, this is because the hydrangea roots develop horizontally. At the bottom of the new pot, put a drain.

Then dig a flower from the old pot, do it carefully, so as not to damage the root system. Therefore, dig, keeping an earthen clod around the roots.

You need to plant a new pot in such a way that the stem goes three centimeters into the ground; you don't need to go deeper. And do not forget that the soil for transplantation should be low-acid. By the way, for planting hydrangeas you can use the soil for geraniums.

After transplantation you need to pour water on the plant abundantly. Fertilize will be as soon as the flower starts to grow. But suddenly the leaves will dry, use with watering drug Cycron.

Observing all these simple rules, you keep the flower healthy, and he, in turn, will delight you with a riot of flowering.