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Culture in natural conditions grows in mountainous areas and forests. Rowan occurs and blooms in the spring everywhere: both in countries with harsh climatic conditions, and in the middle lane in the northern hemisphere.
Does the rowan blossom
There are more than 80-100 species of this tree. In central Our Country, mountain ash most often blooms in spring.
You can catch the period of bud opening in varieties such as Titan, Businka, Spark. All representatives of the Rosaceae family have their own distinctive characteristics, features of care and use.
What is the inflorescence of rowan
The rowan flowers are very numerous, five-membered, collected like a shield, up to 10 cm in diameter.
The inflorescence of mountain ash is a modified panicle, with shortened internodes of the main axis. The internodes of the lateral axes in the complex shield are strongly developed. The endings reach the level of the apical flower.
The receptacle has a narrow-like calyx shape with five wide-angle ciliated sepals. Corolla white color, 0,8-1,5 cm in diameter, only five petals and numerous stamens. The pistil at the inflorescence of this culture is one, three columns, the ovary is located below.
When rowan blossoms
Rowan in bloom in spring is very beautiful: hairy white inflorescences cover the tree from late May or early June.
The buds have an unpleasant aroma, similar to fish, and in some varieties it is bitter almond. Flowering time is 1-2 weeks. The tree feels most comfortable in hot weather, so in the southern and central regions you can see flowers on mountain ash in the spring in early May. In northern latitudes, this process is postponed to the beginning or middle of June.
How rowan blossoms
The timing of flowering varies depending on the varietal characteristics of the crop. Most often in the gardens in the spring you can see ordinary and chokeberry.
Flowering of mountain ash
The tree is often found in the forests of Europe, the Caucasus, North Africa and Asia. Mountain ash does not tolerate marshy and saline soils.
Of all the flowers that appear at the end of May, the fruits are formed by about one third. As they develop and mature, some of them fall off.
Aronia flowers
It is possible to see this shrub in the east of North America, where it grows in natural conditions. Aronia is found in the temperate climate of the globe: it is grown in Our Country, Kazakhstan, and the Volga regions.
Photos of flowering mountain ash and chokeberry allow us to assess the degree of similarity. In this variety, the flowers are bisexual, regular, medium in size. The corolla of the buds is white or pinkish with 15-20 stamens. The flowers are collected in shields, reaching a diameter of 6 cm. The first buds appear in May-June, fall off after 2-3 weeks.
Why the rowan does not bloom
Despite the ubiquity and unpretentiousness of the culture, often after planting, the owners cannot wait for the first fruits. The reasons why rowan blossoms do not occur are numerous.
Improper care
Rowan in bloom in spring suggests a rich harvest, but it is also possible that there are no panicles with buds on the tree. Violation of the rules of agricultural technology is one of the reasons.
Growing a crop involves regular watering and loosening the soil, adding nutrients to the soil and pruning. Humidification of the earth is necessary in the absence of precipitation at the rate of 2-3 buckets per bush. Pruning of shoots is carried out before the awakening of the kidneys, allows the plant to receive a sufficient amount of sunlight and has a positive effect on flowering.
In the spring, before flowering, it is important to inspect the trunk and shoots for damage, and feed the seedling. Damaged and dry branches are removed, the integrity of the bark on the trunk is checked.
Rowan flowers do not appear in the spring if it is planted incorrectly. It is recommended to place the seedling on the borders of the garden so that it does not obscure other plantings. Despite the unpretentiousness of the plant, she feels safe on fertile: loamy soils. Wetlands and lowlands are not the best option for growing crops.
Unfavorable climatic factors
Pollination of rowan flowers with further formation of the ovary is possible not only with proper care, but also with the predominance of certain climatic factors. The tree withstands frosts down to -50 ° C, grows safely in open spaces. Despite shade tolerance, the culture blooms and bears more abundantly if it is provided with access to the sun’s rays.
The tree grows slowly when grown in a dry, hot climate without adequate moisture.
Lack of pollinators
Most rowan species are self-infertile. To provide trees with cross-pollination, gardeners are advised to grow at least 2-3 varieties on their site. They are placed close to each other.
If there are no pollinators, then in order to capture a photo of how the mountain ash blooms, you can graft a cutting to the tree. After the procedure, it is possible to obtain a rich harvest.
Diseases and pests
Among the fungal infections that can harm spring-blooming crops is powdery mildew. The disease spreads through the fruits and leaves in the form of a white coating that is easily removed with the fingers.
The appearance of convex spots on the leaves of a rusty shade is a symptom of a fungal disease rust. It quickly spreads throughout the plant, feeding on important trace elements and tree sap. Without treatment of a seedling blooming in spring with Bordeaux liquid, it quickly dies.
In an unfavorable climate and violation of the rules of agricultural technology, the plant is affected by brown spotting. The fungus lives on leaf plates, which is manifested by dark circles. The brown spot multiplies rapidly and actively progresses during the heavy rainy season.
With the development of gray spotting, the leaves on the branches gradually turn yellow and fall off, which leads to the premature death of the plant. The first symptoms of the disease are the appearance on the mountain ash of small brown spots of an angular shape. As the gray spot progresses in the habitats of the fungus, the leaf cracks and falls to the ground.
Among the viral diseases that affect a flowering seedling in the spring is a ring mosaic. It appears as yellow spots with green circles, merging into one, creating a mosaic pattern. As the virus spreads further, the leaves curl and fall off. There are no effective measures against the disease; they prefer to destroy the tree.
Moths are capable of parasitizing crops. These are nocturnal butterflies whose caterpillars damage flowers and leaves. For prevention, the tree is treated in the spring with Karbofos or Cyanox.
The spider moth lays its eggs on young shoots. Yellow caterpillars with a brown head weave cobwebs on leaf plates, damaging them. To destroy the spider moth, a spring-blooming culture is sprayed with a 0,2% solution of chlorophos, the affected shoots are cut off and burned, and the soil around the trunk is dug up.
The weevil after wintering in cracks in the bark feeds on rowan buds, and then lays eggs in a bud. The hatched larva damages the flowers. To combat the weevil beetle, mountain ash is sprayed with insecticides in the spring.
The fruit sawfly damages spring-blooming mountain ash. The insect lays eggs in buds, which leads to their premature death. To destroy the pest, it is recommended to treat with a solution of mustard (10 g of the powder is diluted in water in a ratio of 1:5).
What to do if the rowan does not bloom
In the absence of fruits on the tree, it is necessary to study the varietal characteristics of the planted plant. Some varieties bloom in the spring in the 4th year of planting, but more often the first berries can be seen in the 5-7th year of the tree’s life.
It is imperative to provide the selected variety with pollinators, it is important to make sure that the seedling is planted in compliance with the basic rules of agricultural technology, regularly receives all the necessary nutrients.
If the placement of the tree is unsuccessful or the soil is infertile, it is recommended to transplant rowan. If it is impossible to perform this procedure, the soil is fertilized with top dressing and mulched.
Every spring, a flowering crop is checked for pests and prophylactically treated for diseases.
Conclusion
Rowan blossoms very beautifully in spring, allowing you to give your site a decorative look. The tree is planted not only to decorate the garden, but also to obtain fruits known for their beneficial properties. Rowan is an unpretentious plant, but may not bloom due to climatic conditions, violations of the rules of agricultural technology and the attack of pests and diseases.
