A blossoming rose can become a real decoration of a suburban area. However, the decorative culture is, unfortunately, rather capricious. Caring for roses in the garden must be done correctly. Sometimes gardeners with such plants have all sorts of difficulties. For example, in some cases buds may not bloom on rose bushes. The reasons for this unpleasant phenomenon are different.
Why roses don't bloom
The main reasons for the death of the buds of this culture before blooming are:
improper care;
diseases
insect damage.
The problem of the lack of flowering may be encountered by people who grow almost any variety of roses on their site. But some varieties of this plant are still considered resistant to the death of buds.
Early flowering
Very often the death of the buds of this decorative culture occurs precisely for this reason. In gardens and parks, roses usually bloom in mid-June. The buds that appear at the beginning of this month and especially at the end of May should be removed. In spring, the weather in the middle zone of Russia, in the Urals and Siberia is quite cool. Yes, and the roses themselves in this period may not yet be strong enough after the winter cold. Accordingly, a plant will simply not have enough strength for flowering.
Why roses don't bloom: decay
Another reason for the death of rosebuds before flowering is poor crown ventilation. The bushes of this decorative culture should not be too thick. Otherwise, the moisture balance is disturbed in the crown of the rose. As a result, some parts of the plant will begin to rot away. And first of all, this will affect, of course, the delicate and fragile rosebuds.
In order for the bushes to subsequently bloom profusely and continuously, in the spring they must be checked and trimmed if necessary. Performing this procedure, you should delete:
You also need to check the bushes for the presence of improperly growing branches remaining from the fall (for example, directed inside the crown).
Why do rose buds dry without blooming: burns
This is another reason flowers may not open. Burns of this crop are usually obtained after "blind" rains. In this case, drops of water remain on the delicate, developing rose petals, acting in the sun like lenses. Particularly susceptible to burns are varieties with flowers of significant diameter with a large number of petals. In this case, both the buds themselves and the already blossoming roses can dry up and fall off in plants.
To avoid such a problem, in hot weather, branches of bushes with a large number of buds should be hidden in the thick of the crown - under the foliage. If there is a chance of "blind" rain, a temporary tent made of waterproof material can even be pulled over the plant.
And of course, you can water roses, including by sprinkling, only in cloudy weather, in the morning before sunrise or in the evening after sunset.
What diseases can interfere with flowering
Improper care causes the death of rosebuds often enough. To fix the problem and achieve abundant flowering in this case is usually quite easy. The situation is a little different when the problem is caused by a disease. In this case, in order to achieve the flowering of roses, the gardener will have to work hard.
If the rosebuds do not bloom and dry, the garden owner, among other things, should check the bushes for symptoms of diseases such as:
Gray rot is the most common cause of lack of flowering. In this case, rosebuds and pedicels are covered with a coating of the corresponding color. Further, these parts of the plant begin to dry out and die. Gray plaque with this disease can also form on other parts of the plant. But nevertheless, it is the buds that suffer most in this case.
With powdery mildew, a white coating appears on the roses. It can cover both the stems of the plant and its leaves and flowers. In this case, the rosebuds do not bloom and flowering does not occur.
Gray rot: how to fight
If the falling of the buds is caused by just such a fungus, the rose must be treated using some kind of biofungicide. This could be, for example:
"Fitodoktor."
Planriz.
"Fitosporin."
"Trichophyte."
If the rot has hit the plant very much, for spraying, most likely, you will have to use more serious means. It can be, for example, “Switch”, “Teldor”, “Fundazol”.
Of the folk remedies for combating gray rot, a milky-aqueous solution (1/10) and a decoction of ash (300 g per 10 l) are often used. The same compositions can be used to prevent infection of roses with gray rot. In addition, in the spring, to prevent infection with a fungus, bushes of this decorative culture can be sprayed with Bordeaux liquid 5%.
Preventive treatment of roses from gray rot should be done without fail. The disease is really very serious and dangerous. Roses “infected” with gray rot can literally “burn” in just a couple of weeks.
Powdery Mildew
In this case, fungicides are also usually used for treatment. It can be, for example, “Ordan”, “Oksikhom”, “Chistotsvet”. From folk remedies for powdery mildew of roses, iodine (10 ml per 10 l of water) and potassium permanganate (2.5 g per 10 l) help well.
In this case, a milk solution can also be used for treatment. But to breed it with powdery mildew is recommended in a proportion of ½. For every 10 liters of such a product, it is worth adding 10 drops of iodine.
Such folk remedies, as well as Bordeaux liquid, can also be used to prevent the development of powdery mildew on plants. When carrying out preventive measures using such solutions, blooming roses are likely to delight the owners of the site later on all summer.
Disease resistant varieties
And gray rot and powdery mildew can nullify all the gardener's efforts to grow roses. It is quite difficult to deal with these diseases even with the use of modern fungicides. Fungal infections develop in roses, usually in wet weather. Therefore, summer residents from humid regions should acquire plant varieties resistant to such diseases.
Powdery mildew, for example, rarely varieties of roses such as:
Halle.
Crocus Rose.
Glory Day.
Hot chocolate.
Roses with dense buds almost never get gray rot. For example, such a disease is unlikely to be encountered by people growing the following varieties:
Also resistant to this infection are Jasmine and Larisa.
Insect buds die
The attack of various pests is also often the answer to the question of why rose buds do not open. Such a problem can be caused, for example, during infection:
Aphids, if you do not take measures to destroy it, can cling to rose bushes very densely. As a result, the plants will begin to bend the shoots, and the buds will stop opening. Of course, roses will not bloom roses.
When infected with thrips, dark spots appear on the buds of plants. The same formations can be noticeable on partially or fully bloomed roses. Looking in the middle of the flower, in this case, you can find the actual insects themselves. The shape of the body thrips are elongated, and the color is dark. Formed buds upon infection with these insects are deformed and die.
How to deal with aphids and thrips
Kill insects on roses, usually using insecticides. It is believed that aphids can help, for example:
"Spark".
"Detis."
"Aktara."
Fitoverm.
From thrips on roses, gardeners most often use:
"Actofit."
Fitoverm.
"Akarin."
Of folk remedies for the fight against aphids and thrips, summer residents most often use garlic broth. For its preparation, 3-4 carefully chopped cloves of burning vegetable are placed in 0.5 l of boiling water and the remedy is insisted for 5 hours. Roses are treated with such a solution by spraying.
Indoor Varieties
Roses are planted by lovers of decorative cultures, of course, not only in gardens and courtyards, but simply on window sills. Such varieties are usually small in size. Flowering problems in indoor roses occur as often as in outdoor roses. In this case, the fight against the withering away of buds follows the same methods. That is, use fungicides or insecticides for this purpose. The only thing is that indoor roses are usually not sprayed during processing. Leaves, buds, shoots and flowers are smeared with prepared solutions with a brush.