Blueberry North Blue is a medium early hybrid that produces a bountiful harvest of large and tasty berries, despite its short stature. The plant is winter-hardy, suitable for growing in harsh climatic conditions. Care for blueberries without complications.
The North Blue Blueberry variety has been bred by US breeders in a crop propagation program since 1973. Parents are called seedlings US-3, G-65, Asworth. The intermediate hybrid of tall species and narrow-leafed Canadian blueberry is particularly frost resistant.
Description of berry culture
The hybrid amazes with a plentiful gathering of fruits, therefore it is rapidly spreading in regions with a short warm season.
The general idea of the variety
The shrub rises only 60-90 cm. The root system of blueberry is fibrous, densely branched, located in the upper soil layer. A hybrid of medium vigor, for a season creates up to 5 young shoots. Direct powerful skeletal branches radiating out from side to side, forming a spreading crown, which is approximately equal to the height along the circumference. Annual growth of blueberry North Blue from 30 cm, green with a matte effect. Old branches are light brown. The leaves are ovate, pointed, glossy from the upper side of the plate, 4-6 cm long. On the side branches of the blueberry bushes there are floral panicles, 6-10 white-cream flowers of a beautiful bell-shaped form.
In the hands of the fruits are collected in a heap. In tall blueberry North Blue berries of large size with a small scar. Fruits from 15 to 18 mm wide, weighing up to 2.5 g. North Blue fruit pulp of dense structure, attractive taste, fragrant, sweet, without cloying, with a slight sourness. Tasters gave them the highest score.
The peculiarity of the North Blue hybrid berries is a high content of pigments of the group of glycosides - anthocyanins. The strong skin of berries under their influence acquires a rich shade of ultramarine, on top of a wax coating. There are 6.73 g of anthocyanins per 100 g of dry berries of North Blue, which exceeds the characteristics of other blueberry varieties by a factor of 2-3. These are not just dyes, they are active antioxidants.
Important! Anthocyanins give the berries a bright dark blue color and reward them with healing properties.
The compact bush North Blue is popular for its unpretentiousness and sufficient decorative effect.
Cultivate the variety in those regions where tall blueberries freeze over. Shrub stands up to -35 aboutC. Frost resistance decreases in snowless winters. At the same time, a hybrid created on the basis of low-growing species, moderately resistant to drought, withstands short-term drying out of the soil. In the hot summer the plants are watered. According to the reviews about blueberry North Blue, the plant develops well in acidic light soils, care is undemanding. Ripe berries are stored for 10 days, they have a dry separation from the stem, suitable for transportation.
Flowering period and ripening time
The buds of the blueberry blueberry bloom in the last days of May, flowering lasts up to 20 days. Ovaries ripen for two months. Fruits are harvested from late June or early August to September. Spring frosts, air temperature, soil moisture and the presence of mineral supplements affect ripening of blueberries.
Yield indicators, terms of fructification
In the descriptions of blueberry North Blue mentions its self-fertility, but many gardeners still advise planting a few culture bushes next to it. As a result of cross-pollination, the harvest increases significantly, and the standing bush alone provides only a third of the berries from the total number of flowers. In addition, observations show that the fruits on plants surrounded by neighboring blueberry bushes are sweeter and more tender. North Blue fruit steadily every year, for the season they collect from 1.2 to 2.5 kg of berries from the bush.
Signal berries are formed under good conditions and in the first season after planting. Experienced gardeners recommend allowing blueberries to grow wood and tear ovaries. In the fruiting bush enters the 2-3rd year.Comment! The bush is prone to crop overload. After abundant fruiting the next year, part of the flower buds are pruned so that the berries are larger.
Scope of berries
Fruits of blueberry are useful fresh or in the form of fresh juice. From berries prepare jam, compotes, freeze. Apply as a fragrant filling in pies.
Disease and Pest Resistance
According to the characteristics of the variety, Blueberry North Blue is not susceptible to such diseases as anthracnose, moniliosis, white spot, gray rot, which affect berry bushes. The plant is protected from aphids, various caterpillars and mites, and larvae of the hruscha.
The advantages and disadvantages of the variety
The clear benefits of shrubs contribute to its spread:
- frost resistance;
- high consumer qualities of fruits;
- yield relatively compact form of the bush;
- decorative plants.
Requirements for a sunny landing site are related to the shortcomings of the variety.
The hybrid will grow well and produce a bountiful harvest if the planting rules are followed.Attention! Between the bushes of blueberry North Blue leave an interval of 1-1.5 m.
Spring is the best time to move blueberries to the garden. Plants in containers are planted later in the beginning of summer. In areas with a warm climate, you can plant North Blue Blueberry in the fall, with a long interval before frost, so that the bush will settle down.
Choosing the right place
Although a low shrub was cultivated on the basis of wild plants from wetlands, garden blueberries require completely different conditions:
- drained light soils, preferably peatlands, sandy or loamy, and good lighting without a penumbra will provide the expected yield of berries;
- With the help of testers, it is necessary to analyze the soil acidity in the garden - optimum pH values: 3.8-5;
- groundwater is not higher than 60 cm.
Plant blueberry North Blue should be in a carefully prepared substrate, if the garden soil does not meet the requirements of the variety. A pit 70 x 70 cm wide is prepared such that a 30-50 centimeter layer of red peat is placed. Or prepare the substrate of 3 parts of peat, 1 - leaf, 2 - coniferous earth. At the bottom is placed 10 cm of drainage.
Selection and preparation of seedlings
The stems of a healthy North Blue Blue shrub are resilient, the buds are alive, the bark is intact. If the seedling is purchased in a container, before planting it is soaked in water for several hours. The roots are straightened, because in cramped quarters they lump together.
Algorithm and landing pattern
Before planting, the peg for the garter stem is hammered:
- the prepared seedling is deepened in a hole, straightening horizontally woven roots in an earthy coma;
- root neck is 5 cm below ground level;
- powdered with substrate, tamped, watered, mulched with pine needles or pine sawdust;
- seedlings above 40 cm pruned 100-120 mm.
Subsequent care for the culture
Growing blueberry North Blue requires a gardener to pay attention to pruning and mulching the tree trunks.
Blueberry North Blue watered in periods without rain of 10 liters under a bush in 2-3 days. The soil is moistened, but without stagnant water. A variety planted in the south requires sprinkling 2 times a week or more often during heat. Ammonium and potassium sulfates or minerals in a special complex are used as fertilizer in spring at the beginning of flowering and creating ovaries.Tip! Preventing excessive evaporation of moisture, the layer of mulch is raised to 15 cm.
In early spring, they carry out sanitary and formative pruning. The latter type is used after a heavy previous harvest to relieve the bush.
Preparing for the winter
Despite the fact that the North Blue Blueberry blueberry variety is frost-resistant, bushes in the fall cover in regions with a small amount of snow. Wrap shoots in agrotextiles, to protect against icing. Layer the mulch up.
Harvesting, processing, storage of the crop
Planting and caring for blueberry North Blue is simple, and the trouble of processing berries is pleasant. Fruits are harvested for a month, up to 10-14 days they are stored in the refrigerator.
Diseases and pests, methods of control and prevention
Viral red leaf spot
Red spots, shoots and leaves are small
The fight against insects and mites, vectors: "Karbofos", "Fufanon"
Brown spots, cracks and ulcers on the bark
Trimming by the rules.
Spraying Bordeaux mixture
Gauls on the branches
Iron vitriol, "Nitrafen"
Cleaning fallen leaves, affected shoots
Blueberry North Blue is a winter-hardy and fruitful variety that can be not only a valuable fruit crop, but also a decorative one. Low compact shrub looks spectacular from the second half of summer and autumn in bright crimson decoration. Growing garden blueberries gives aesthetic pleasure and health.