Why don't hydrangeas bloom outside? White rot of hydrangeas

Often even experienced flower growers are faced with the problem of lack of flowers in the garden. This plant is demanding on growing conditions. The slightest mistake in care can lead to the fact that its buds wither and fall off, or even do not appear at all.

To ensure long-term and abundant flowering young and adult bushes, you need to know what factors most often affect their flowering. In this case, you can quickly fix the problem when it occurs.

The main reasons for the lack of flowering and their solution

Most often, novice flower growers make the following gross mistakes in caring for a flower. Why garden hydrangea does not bloom:

Often there are anomalies in the growth and development of the root system, especially in newly acquired plants. This leads to a violation of the development of the bush and the lack of flowering.

Consider the reasons why the hydrangea does not bloom in more detail.

Preparing for the winter

Hydrangea does not tolerate frost. Any decrease in air temperature below 0ºС can lead to freezing of flower buds. In this case, the plant will not bloom. To protect the bush from frost, it must be covered for the winter.

Without waiting for the autumn frosts, the leaves are cut off from the bush, the branches are pulled together with a tourniquet and wrapped with covering material. The bush is bent to the ground and covered with spruce branches. In the spring, it is gradually freed from spruce branches, but finally opened only with the departure of frost and the onset of heat.

pruning

In order for the plant to bloom, it must be cut correctly. In the spring, dry, old and weak branches are pruned.

All well-developed shoots of the previous year are not touched. Usually it is on their tops that flowers form. If an inexperienced grower cuts off these shoots, the plant will not form buds and will not bloom.

top dressing

Hydrangea does not respond well to excess fertilizer in the soil. It is especially harmful to apply nitrogen fertilizers to the soil in summer and early autumn.

They are used to enhance the growth of green mass and do not contribute to flowering. And the rapid growth of shoots in the fall leads to the fact that they do not have time to ripen for the cold and freeze.

Proper feeding of the plant is carried out several times a season. At the end of spring, nitrogen fertilizers are applied to enhance the growing season. In summer, fertilizing with potassium-phosphorus fertilizers is used to stimulate and maintain flowering. In early September, potassium-phosphorus preparations are applied to strengthen the shoots and prepare for winter.

Root development and flowering

For flowering, the bush must have a powerful root system. If the roots are poorly developed, there is no hope for early flowering. Bushes that are too young or overfed with fertilizers can take several years to form roots. And only after that such bushes bloom.

Choosing the right place for planting a bush and caring for it will allow you to overcome all difficulties and achieve annual flowering.

Also affect the flowering of the bush can:

• Insufficient watering;
• High air temperature;
• Excess sunlight or its lack;
• Heavy clay soil.

Reasons for the lack of flowering in some species and varieties

At various kinds hydrangeas have their own, peculiar only to this variety, reasons for the absence of flowers and buds. Among garden hydrangeas, the most popular are:

Consider the most likely reasons why they do not bloom.

Panicled hydrangea is the most frost-resistant species. It tolerates cold so easily that it can not be covered at all for the winter. Its buds do not freeze over, as inflorescences are formed on the shoots of the current year. However, this species may not bloom for some other reason.

The main reason why panicle hydrangea does not bloom is the unsuitable composition of the soil.. For such a plant, heavy loamy soil with weak acidity is more suitable. Light sandy soils are not acceptable for this species.

Also very often the plant refuses to bloom due to lack of nutrition. Therefore, feeding should be given Special attention.

Why large-leaved hydrangea does not bloom: most often due to freezing of shoots and buds. There are many varieties of this species, which have different winter hardiness.

If some of them can be grown in open ground, covering for the winter, then others freeze out even with careful shelter. These varieties can only be grown in enclosed spaces like potted plants.

pruning large-leaved hydrangea also need to be careful. Flowers are formed on the shoots of the previous year, which cannot be touched during pruning. If they are shortened, then the flower buds will be removed and the plant will not bloom.

This species is quite cold hardy. However, if the bushes are not covered, in a harsh winter most of flower buds will freeze. In summer, a frozen bush will not bloom. Therefore, the plant needs to be covered for the winter.

This species needs to be fed regularly., first with fertilizers for leaf growth, then with fertilizers for flowering. Without top dressing, the plant will refuse to bloom.

The reason why it doesn't bloom tree hydrangea, may be improper watering. In dry soil, especially in summer heat, such a bush develops very slowly and never blooms.

Garden hydrangea refuses to bloom for several years

Your garden beauty pleased with annual flowering, but for several years now there have been no flowers on it. What is the reason? If the bush was protected from frost, it was properly fed and watered, most probable cause lack of buds are diseases and pests. A plant that is sick or affected by harmful insects will not bloom.

On the garden hydrangea aphids settle, spider mites, weevils and many other pests. To kill insects, it is recommended to treat the bush with insecticides.

Hydrangea is most often affected by viral mosaic disease and fungal diseases.: downy mildew and gray mold. To destroy fungi, the bush is treated with fungicidal preparations. At viral infection all affected areas of the plant are cut out and burned.

Proper feeding of garden hydrangea for flowering

What to do if the garden hydrangea does not bloom - perhaps the reasons are in feeding. Top dressing of hydrangeas is a mandatory procedure for proper growth and flowering. Spring, summer and autumn fundamentally differ in the composition of the fertilizers used.

At the beginning of spring when there is an active increase in leaf mass, nitrogen fertilizers are required for the plant. Usually a mixture of urea and potassium sulfate is used. One tablespoon of these substances is diluted in 10 liters of water. For an adult hydrangea bush, about 5 liters of solution are needed. Sometimes slurry is used for irrigation, which is diluted with water in a ratio of 1:10.

At the end of spring when the budding period begins, it is recommended to feed the plant with potassium-phosphorus fertilizers.

Superphosphate gives the best results. One tablespoon of this substance is dissolved in 10 liters of water. You can also use any other mineral complex fertilizer.

During the summer period when the plant is actively blooming, it is fed 2-3 times with special fertilizers for flowering garden plants. It is also useful to acidify the soil in the place where the bush grows.

To do this, use whey or citric acid. Serum is diluted with water in a ratio of 1:3. citric acid take on the tip of a tablespoon and dissolve in 10 liters of water.

At the beginning of autumn to strengthen the shoots and prepare for winter, potash-phosphorus fertilizers are applied. Dissolve 1 tablespoon of potassium sulfate and superphosphate in 10 liters of water and water the hydrangea bushes.

Now you know why the hydrangea does not bloom in the garden, but what if you have a houseplant?

Why hydrangea does not bloom indoors

AT room conditions The following reasons are possible due to which the hydrangea refuses to bloom:

• Wrong choice of lighting;
• Unsuitable soil composition for the plant;
• Lack of moisture in the soil and in the air;
• Sharp jumps in temperature;
• Bush age.

For the plant in the room to bloom every year, it must be kept in a bright place but straight Sun rays should not fall on the leaves. With a lack of lighting or its excess, flowering most likely will not occur.

The plant loves acidic soil. Also for indoor varieties it doesn't have to be very heavy. Clay soil is not suitable.

It is better to choose a purchased fertile earthen mixture without clay, but with a small amount of peat. Also, we must not forget about the annual transplantation of the bush in new ground so that it blooms long and abundantly.

The flower does not tolerate drying out of the soil and too dry air. For creating optimal conditions its growth and flowering, it is necessary to keep the earthen ball in the pot always wet, and spray the leaves with settled water.

Do not allow a sharp change in temperature in the room where the flower grows. In such conditions, she does not grow buds. If the buds have already formed, then they can fall off from a sharp drop in temperature.

Over time, the plant, even with good care stops blooming. It is recommended to grow a bush for no more than 4-5 years, after which it is better to replace the plant with a young one. You can read more about caring for hydrangeas at home.

Many beginners in the field of floriculture often make simple mistakes when growing hydrangeas. Because of this, plants can stop flowering, and put all the useful substances into the development of foliage.

Hydrangea is perennial shrub, which gives flowers of amazing beauty. But it is not always possible to see these flowers on your plant. When growing these plants, you should know why the hydrangea does not bloom, but only leaves. This will help flower growers to observe the flowering of their plants every year.

white flowers

Hydrangea has more than 80 varieties, and they can differ in a large number of characteristics. The main part of the varieties are small shrubs, 1-2 meters high, and creepers can climb to a height of more than 30 meters.

Hydrangea

Flowering of plants begins in late spring and lasts until late autumn. The main part of the flowers is white, but the flowers of some varieties of hydrangea can be painted in pink, red, blue and lilac colors. As a rule, the color depends on the level of soil acidity.

Reasons for not flowering

Many flower growers, having decided to grow hydrangeas on their garden plot, fail to flower. There may be several reasons, and you should know the main ones in order to avoid mistakes when growing plants.

• Incorrect pruning.
• Lack of moisture.
• Underdevelopment of the root system.
• Buying fraud.
• Wrong transfer.
• Insufficient lighting.
• Freezing of kidneys in winter.
• Wrong nutrition.
• Choice not suitable variety.
• Diseases and pests.

pruning bushes

Hydrangeas, like other shrubs, need timely and proper pruning. It greatly affects the amount of foliage and the abundance of flowering. Incorrect pruning is often the reason why hydrangeas do not bloom, but only give leaves. This phenomenon is very common in large-leaved hydrangea varieties.

As a rule, the main part of pruning is carried out in the spring after the snow has melted. In the fall, work on cutting hydrangea bushes is rarely left, only faded parts are removed. spring pruning produced before the formation of foliage. Pruning methods may differ for each individual type of hydrangea.

Watering

Hydrangea loves moisture. Even its name in Latin is translated as "a vessel with water." Watering for bushes should be plentiful. AT summer period up to 50 ml of water is used for each bush.

Watering is done regularly. In the summer, the bushes are watered twice a week. If the weather is rainy, then watering should be reduced to once. The amount of watering should be adjusted according to the current weather.

root system

Young plants that have only recently been planted in the soil have a weak root system. They need long time to finally strengthen and begin to give flowers.

Full flowering of plants begins only at the 4th year of hydrangea growth. Therefore, you should not panic if the hydrangea does not bloom immediately after planting. With proper care, you can get stunning flowers every year.

Purchase of planting material

When buying hydrangeas, you should not contact little-known sellers of planting material. Often unscrupulous sellers can use growth and flowering enhancers. When buying, you can observe excellent flowering, and by planting such plants in your soil, flowering may stop.

The use of bloom enhancers is very high load on plants. Subsequently, such a plant will not produce flowers for a very long time. And in the worst case, you can not see the flowers at all.

Buy planting material only in conducted companies, and before buying, you should carefully study the reviews about it.

Bush transplant

Improper transplantation very often becomes the reason why it does not bloom pink hydrangea, and gives only foliage. Novice flower growers can easily damage the root system, disrupting the usual metabolism of plants.

planting flowers

Also choosing a container that is too tight or too spacious for growing indoor plants can lead to a slowdown in development and, as a result, the cessation of flowering of hydrangeas.

The choice of a suitable soil is also very important, because a sharp change in the composition of the soil can adversely affect the general condition of the plants.

Lighting

The reason for poor flowering or its absence may be insufficient lighting. This is often observed in places where the natural solar lighting not fully available.

To solve this problem, additional lighting should be established by other methods or plants should be transplanted to places where there will be plenty of sunlight.

pink flowers

Shelter for the winter

In severe frosts, flowering buds can easily freeze. Such buds will no longer be able to produce flowers, and they will only have to be cut along with damaged stems. To prevent this from happening, the plants take cover for the winter.

Shelter for the winter

• You should tie together the stems of hydrangeas and spud them with sawdust. After that, it remains only to sprinkle them with earth.
• If it is possible to cover the hydrangea with a non-woven covering material, then this opportunity should be used.
• Coniferous branches will be a good covering material. They will not only save the bushes from freezing, but also increase the acidity of the soil, which hydrangea bushes love.
• Plants can be covered even if all the leaves did not have time to fall. Neither pests nor diseases hibernate on hydrangea leaves.

top dressing

Fertilization

For the full flowering of hydrangeas, regular, but moderately dosed top dressing is needed. An excess of nitrogen fertilizers is the reason why paniculate hydrangea does not bloom, but only leaves. The flowering of the bushes stops, and the nutrients go to enhanced education foliage.

• In the spring, at the beginning of the growth of the bushes, it should be applied for one square meter soil 25 gr. urea, 40 gr. superphosphate and 35 gr. sulfuric potassium.
• With the onset of the budding phase, the supply of nitrogen fertilizers is reduced. For one square meter of soil, 80 gr. superphosphate and 45 gr. sulfuric potassium.
• The use of nitrogen fertilizers is relevant after flowering. Under each bush, 15 kg of compost or rotted manure should be added.

There are special fertilizers for hydrangeas. They contain a set of minerals and trace elements necessary for the full development of plants. You can use them as the main top dressing. Please read the instructions carefully before use.

Selection of varieties

Each plant requires certain growing conditions. It is not always possible to achieve them in different regions of the country. Varieties that are initially accustomed to a lot of light and heat will feel uncomfortable in the northern regions.

Variety selection

On the other hand, a variety intended for growing in northern climates is unlikely to take root in hot, dry regions.

Choosing the right variety is one of the many basic conditions for the full growth and flowering of hydrangeas.

Diseases and pests

Diseases and pests on hydrangeas are rare, but even they suffer from similar troubles. The most common hydrangea problems are:

They do not directly damage flowers, but they can interfere with plant development by slowing the onset of flowering or stopping it altogether. Use to control diseases and pests modern facilities on a biological or chemical basis, as well as folk methods.

Knowing why the hydrangea does not bloom, but gives only foliage, you can easily eliminate all the reasons that interfere full development plants. Applying these tips in practice, you can enjoy the pleasant flowering of your pets every year.

One of beautiful flowers decorating the garden is the hydrangea. But, despite the simple care, some gardeners are wondering why panicled hydrangea does not bloom.

To help hydrangeas bloom and prolong flowering, you need to find out what is the reason for the lack of flowering.

Agrotechnical conditions for the growth of hydrangeas

Hydrangea paniculata is a shrub, up to 3 meters high, with upright spreading branches. small flowers collected in large pyramidal inflorescences, 20-30 cm long. Flowering is abundant from June to October (depending on the variety). The color of the inflorescences varies from white to pink, lilac, blue. Some varieties can change the colors of the inflorescences with changing weather conditions.

The main conditions for the successful development, growth and flowering of a plant are:

It is possible to make a large-leaved variety of panicled hydrangea bloom or accelerate growth only if the recommendations for planting and proper quality care are followed.

Reasons for the lack of flowering

This type of hydrangea reacts sharply to insufficient (improper) care, which is noticeable when the foliage grows excessively in the plant, the flower becomes very small in size, while it becomes rarer, not so lush, and the color of the inflorescences is faded.

The main reasons for the lack of flowers in the paniculate hydrangea are as follows.

Wrong watering

For successful growth and flowering, the plant needs regular watering. In hot weather, water should be 2 times a week, in dry, cool weather - 1 time per week.

Watering is carried out with clean settled water under the root, at least 10 liters of water under each hydrangea bush.

Note! It is important to monitor the root system and the drying of the earthy coma. An excess of moisture has a detrimental effect on flowering.

Fertilization

With untimely application of fertilizers of unsuitable compositions, the plant experiences severe stress, which negatively affects external state hydrangeas. Top dressing is necessary, according to the schedule recommended by experienced gardeners:

• during landing, in early spring and before flowering, mineral fertilizers (containing phosphorus, potassium, magnesium, zinc) and nitrogen-containing fertilizers are applied weekly under the root. You can mulch the root zone with organic fertilizers (household plant waste, mowed grass, sunflower tops, etc.).
• In the summer (during budding or the beginning of flowering), potassium-phosphorus fertilizers are applied once every 7-10 days, and nitrogen fertilizing is stopped.
• AT autumn period(after the end of flowering) make phosphorus top dressing to strengthen and better winter hardiness of the kidneys. You can add rotted cow dung.

The hydrangea garden will grow, bloom and decorate with its color only on fertile, loose, well-moistened and fertilized soil. If the acidity of the soil is insufficient, you can add a little wood ash to the soil (experienced gardeners advise grapevine ash, fruit trees: cherries, peaches, apples).

Wrong landing site

Planting hydrangea paniculata in a shady place or under the scorching rays of the sun in a draft is fraught with dropping leaves, lack of flowers, or flowering with very small rare inflorescences.

Planting hydrangeas

The best place for planting hydrangeas is an area in partial shade or with diffused sunlight, protected from drafts, sudden gusts of wind, with fertile soil and adequate water supply. Planting in a lowland with constant stagnant water contributes to the decay of the root system, its underdevelopment, lack of growth and flowering.

Paniculata hydrangea planted in the shade of fruit trees will not bloom, even if watering and fertilizing are increased.

Wrong autumn pruning

With improper pruning during the formation of the crown, the shrub stops blooming. Proper pruning consists in shortening weak and thin shoots. Only dry branches and shoots growing inside the crown and thickening the bush can be completely cut off.

It is strictly forbidden to cut off the upper shoots on which buds form in autumn, because. from these buds in the spring buds will awaken, which will open into a magnificent flower.

Insufficient shelter in winter

Despite the fact that panicled hydrangea is the most frost-resistant variety, when growing this species in the northern regions of Russia, it is necessary to cover the shoots in the winter.

Shelter is carried out after autumn pruning with the onset of cold weather, when all the inflorescences have already faded. The hydrangea flower bush is tilted to the ground, covered with agrofiber (lutrasil) and covered with peat or earth. You can use fallen dry leaves, spruce needles.

Important! Under no circumstances should it be used for cover. polyethylene film to prevent greenhouse effect and rotting of the root system of the shrub.

Bend to the ground the branches of an adult shrub (over 5 years old) should be extremely careful not to break them.

Shelter should be removed in the spring, when the threat of frost has completely passed. You should not cut dry, at first glance, branches, because with sufficient watering, buds can wake up on them, which will eventually turn into a luxurious flower.

Adaptation after landing

After planting a hydrangea bush, it is important to pay due attention to the development of the plant. For the first time after planting, it is often necessary to water only the planted bush in order to speed up the process of rooting and development. Also apply top dressing and growth stimulants. The first time after planting, the leaf may become more faded, lighter. But with the rooting of hydrangea growth, the leaf will become brighter and stronger.

You should also refrain from buying and planting hydrangeas grown in greenhouse conditions. Since in this case was held drip irrigation, was introduced into the soil a large number of fertilizers and growth stimulants, which will negatively affect flowering in the years following planting.

Planting hydrangeas

Poor development of the root system

Hydrangea blooms in the second year after planting, when it is sufficiently formed. root system. Young bushes overfed with fertilizers, weak underdeveloped roots - the reason for the lack of flowering.

If you do not make the above mistakes, this will help the plant to overwinter and delight its owner with a lush color.

The lack of flowering for several years is another of the problems that beginner gardeners face. The main causes of this problem are the abnormal development (underdevelopment) of the root system, over-fertilization, excessive watering, and severe freezing of the shoots.

Reasons for late flowering

If panicled hydrangea began to bloom late, then the reasons may be:

• ¾ Planting a plant in unsuitable infertile soil with high acidity, heavy, loamy, sandy.
• ¾ Shortage nutrients. The lack of fertilizing and fertilizers manifests itself in the form of late flowering of the bush, regardless of varietal affiliation and early ripeness.
• ¾ Too much moisture.
• ¾ Defeat by fungal infections (powdery mildew, late blight),
• ¾ Pest damage: weevils, aphids, spider mites.

On a note! You can speed up flowering with the help of fertilizers. It is recommended to apply complex fertilizers that are suitable for the composition and varietal affiliation of the plant. Positively proven fertilizers are: Agricola, "Crystal" (Fertika), Pokon, Green Boom, Flower Paradise.

At home, you can make the hydrangea bloom earlier in the following ways:

• ü Reduce the amount of watering, and then sharply increase. Such changes will provoke an artificial onset of flowering.
• ü Make light pruning of the youngest shoots to speed up the growing season and make the hydrangea bloom earlier.
• ü Thoroughly loosen the soil, mulch it with organic matter, feed it with curdled milk (mix 3 liters of fresh curdled milk in 10 liters of water and water the roots abundantly).

To avoid FAQ when panicled hydrangea does not bloom (blooms late) what to do, it is important to strictly observe agrotechnological measures that contribute to the rapid development of the root system, timely and abundant flowering.

Variety selection

When choosing a type of panicle hydrangea for planting, it is important to pay special attention to the variety, the conformity of the plant climate zone, planting and care requirements.

A variety bred for cultivation in the southern regions of Russia, when planted in the northern regions, will either bloom late or not bloom at all.

Proper and proper care helps to grow a healthy plant, and the accelerated growth of the root system contributes to abundant and lush bloom, regardless of the variety and color of hydrangea.

Hydrangea - popular among gardeners decorative flower. It belongs to the category of capricious cultures. Errors in growing technology lead to a lack of flowers. There are several reasons why the plant does not bloom. It is important to diagnose them correctly, and then eliminate the negative factors.

Features of the cultivation of hydrangea

Hydrangea is grown as climbing liana, small tree or shrub. The plant has many varieties. A variety of shades and shapes allows you to create a unique decorative combination in the flower garden. It is necessary to understand why the hydrangea does not bloom in the spring, when they noticed the absence of buds.

Novice gardeners may encounter such a problem: they bought a ready-made flowering plant in the store, but at home it withered. It is not possible to achieve the appearance of new buds. The reason for this was most likely special means, which stimulate flowering, but greatly deplete the strength of the hydrangea. After treatment, the plant may not form new flowers for several more years.

Advice. In this case, you can help the culture by adding a growth activator.

If you purchase a young specimen and plant it yourself, then it can bloom in the first summer after breeding. However, without proper attention and care, you can be left without flowers even in the second season, if the stalk turned out to be weak and did not get stronger in the first year. And in this case, growth activators help. The drugs allow:

hydrangea bloom

• strengthen and develop the root system;
• form stems and branches;
• ensure green growth.

Feeding hydrangeas: the basis of full flowering

Proper hydrangea fertilizer technology will help grow a plant that can bloom normally. The first dressing is needed for the flower immediately after it is planted - with a weak solution organic fertilizer for good adaptation. In the process of growing fertilizers are applied according to a certain scheme.

In early spring, the crop needs a lot of nitrogen. This mix works well:

• urea - 1 tbsp. l.;
• potassium sulfate - 1 tbsp. l.;
• water - 10 l.

Attention! Watering is carried out at the rate of 5 liters per 1 bush.

An alternative is slurry diluted in water (1:10). Later, at the stage of bud formation, the plant is fed with mineral complexes with a high content of phosphorus and potassium. To further strengthen the bush, pour the root zone and the stem directly with a solution of potassium permanganate. The procedure must be repeated three times. In this case, there should not be situations when the hydrangea does not bloom.

In summer, the shrub must be treated with a complex strengthening agent for flowering crops. Nitrogen during this period should be used carefully. Its excess will lead to the strengthening of greenery and the inflorescences themselves, which will negatively affect the strength of the branches. Total number top dressing in the summer months is limited to 3 times.

During flowering, gardeners also use non-standard dressings:

• lactic acid (yogurt, kefir, whey);
• soaked sour bread.

Advice. In autumn, hydrangeas need to accumulate potassium and phosphorus, so repeat the course of mineral fertilizer application.

How to understand why hydrangea does not bloom

The main reasons for the lack of buds in an adult specimen of hydrangea:

Before experienced gardener the question of flowering hydrangea is not worth it. The main factor in this is proper care behind the plant.

How to make hydrangea bloom: video

Hydrangea - very beautiful and unpretentious flower. His lace hats adorn any garden, bringing special tenderness and comfort to the site. You can plant hydrangea bushes in flower beds, near a fence, or use as a hedge. And although the hydrangea has a rather unpretentious disposition, not all gardeners succeed in achieving its flowering.

In order for a flower to be beautiful and give a lush color, it must be properly looked after, properly watered, cut and fertilized. Why does the hydrangea not bloom, but only give foliage? Let's take a look at the possible reasons.

Why does the hydrangea not bloom, but only give foliage?

• Weak root system - it will be like this when improper care or if the seedling is less than two years old. Some varieties (and there are about 70 of them in total) do not bloom at all in the first 6 years after planting.

• Wrong landing site chosen - hydrangea loves slight partial shade or diffused natural light. Perhaps the flower will grow and bloom normally in the sun, but in most cases, direct sunlight is fatal for him. It is also not recommended to plant bushes under the crowns of trees, next to a roof slope or a house.

• Something is wrong with watering - in hot and dry weather, it should be done at least twice a week, rain or settled water will do. For a one-time watering of a bush, a bucket and a half of water should go, no less.

• Poor soil characteristics - hydrangea will only bloom if the soil in which it grows is loose, fertilized and well moistened. For most varieties, it should be slightly acidic - on alkaline and neutral it will be much less likely to wait for flowering (measure the acidity of the soil and change it if necessary - this can be done by watering with a solution of sulfuric acid).

• Incorrect fertilization - application of nitrogen fertilizers stimulates foliage growth, and top dressing with potassium and phosphorus affects the abundance of flowering. Nitrogen compounds need to be applied, but only in the spring - in the summer, the bushes need a different top dressing, otherwise they will not bloom.
• Excessive pruning of bushes - if you cut off all the branches for the winter, the plant will not bloom next year. autumn pruning involves the removal of dry branches that do not have leaves, thin and weak shoots, branches growing towards the stem - leave the rest
• Buds are frozen or branches are broken off - to prevent this from happening, place stones or bricks under the branches, another option is to close the plant for the winter.

It is impossible to say unequivocally why your hydrangea bush does not bloom, so check all the above possible factors. Something must help!