Barberis of Thunberg “Coronita” is an unpretentious, but very beautiful shrub, which is an ornament of any site. Gardeners appreciate it for the rounded shape of the crown, a scattering of light orange flowers and bright red fruits.
Thunberg’s barberry “Coronita” is a beautiful shrub reaching a height of 50 centimeters to a meter and a half. Description Coronita should begin with the fact that the culture forms a beautiful rounded crown with a diameter of 1.2 to 1.4 meters. Roots are located close to the surface. The shoots are covered with red spikes with a length of 0.5 to 2 centimeters. The leaves, growing in length up to 2.5-3 centimeters, have a beautiful egg-shaped and even border. The width of the plate is only a centimeter.
The plate itself is brown in color, but the border is close to a yellow-green color. Red kidney leaves grow to just 5 millimeters. Vertical shoots bend over time. The flowers of barberry grow in May either individually or in hands. Light orange, and sometimes just yellow flowers bloom for only two weeks, but in October bright, but inedible fruits of an oblong shape and a bright red hue appear on the shrub.
Landing and care
Barberry “Coronita” develops best on loose soils, namely in sandy loam and loam. The level of acidity cannot go beyond the boundaries of 5-7.5 units. In addition, we must not forget about soil drainage. The culture will develop poorly with excess moisture, for example, in wetlands, and where underground waters are close or stagnation often forms after snowmelt. Although Coronita is best manifested in fertile lands, its quite acceptable development is possible in arid or impoverished areas.
Mandatory is high-quality lighting throughout the day, because even a slight shadow for several hours will lead to a deterioration in the quality of the plant.
Landing of barberry Thunberg on open ground is carried out in early spring or autumn. Previously, containers with seedlings are kept for some time in water so that the soil is nourished and the culture is extracted without any damage to the root system. Between separate landings, it is necessary to maintain a gap of 1.6 to 2.2 meters wide. If barberry is to become part of a hedge, then this gap is reduced to a length of 50 to 60 centimeters.
The depth of one hole is from 40 to 50 centimeters, and its diameter is equal to similar indicators.
Drainage is laid out in the pit, then a soil mixture consisting of part of sand, part of humus and two parts of sod land. The seedling is placed on a mound formed from a substrate in such a way that the root neck rises above the ground by about 4-5 centimeters. The roots are covered with earth, after which the plantings are watered and mulched. Immediately recommended to cut the shoots so that there are 3 buds.
The first month of barberry will need to be watered once a week or 10 days. Next should be guided by the state of the soil. A rainy summer allows you to do without irrigation, and in hot weather you need to pour water about once a week. The trunk circle is necessarily periodically loosened and cleaned of weeds. In spring, complex fertilizers are applied or humus with compost is applied. Before the winter season, you will need to mulch using peat, compost and humus.
Pruning is best done in early spring, until the movement of juices has begun. In principle, there is no need to form a crown, but barberry can be given a decorative look if desired. The hedge will have to be adjusted throughout the season. In the fall, old bushes are freed from almost all shoots for complete rejuvenation. Sanitary pruning will need to be carried out in mid-spring in order to remove frost-bitten parts and otherwise affected shoots from the bush.
To propagate the Barberry of Thunberg “Coronite” will turn out in all possible ways. The division of the bush is carried out in the spring, as soon as the soil warms up, or in early autumn before the onset of frost. The mother bush is dug up, after which it is separated with a sharp tool.
It is important to ensure that each part has a sufficient number of roots, as well as 4 to 7 shoots. Finished delenki must be immediately dropped off to a new place.
Breeding by layering is also recommended in spring. The lower branches are covered with soil so that their tops remain above the ground. Additionally layering is fixed with metal brackets. With regular irrigation, sprouts should appear somewhere in a couple of weeks. The land next to them loosens a little, and irrigation is set at around once a week. Cuttings are landed on a new place either in spring or in autumn. The shoots that appear on the roots can be cut off immediately and immediately transplanted to a new place, provided that there is a well-developed root system.
When choosing cuttings, you can choose two types of cuttings: either green or partially woody. Green shoots are separated from the bottom of the mother bush with a sharp knife at an angle of 45 degrees. If they are partially numb, then fifteen-centimeter branches are simply separated from the bush.
Cuttings should be treated with growth stimulants that help the root system.
Planting is carried out in a mixture of sand and non-acid peat, with sand being laid on top, and peat forms the bottom. On top of the cuttings are closed with a plastic dome, and then subjected to regular irrigation. Planting cuttings in open ground can be carried out in spring or autumn.
The seeds of barberry “Coronita” are not particularly good germination, but you can still use them. Previously, the material is aged for 3 months in a refrigerator, soaked in a weak manganese solution for several minutes, and then planted either in a container or in open ground, but only in autumn.
In principle, the Coronita barberry has good frost resistance, so it can survive the cold, reaching up to -30 degrees without special shelter. However, it is worthwhile to be prepared for the fact that the northern winds are still able to damage the tops of shoots of the age of one year.
Before going into hibernation, the shrub must be mulched or spud with ordinary soil , creating elevations of 10-12 centimeters from the level of the root neck. In winter, you can warm the plantings with ordinary snow, but with the onset of spring it will be necessary to quickly remove the soil, after waiting for the precipitation to melt.
Diseases and Pests
Barberry “Coronita” is exposed to fairly common diseases and pests. In most cases, the plant can be safely saved. Barberry aphid affects the leaves of the bush , which are first deformed, and then dry. To cope with the insect will help soap solution, prepared from 300 grams of household bar, dissolved in 10 liters of water. Additionally, you can supplement the drug with 500 grams of shag and use the resulting liquid to spray plantings.
The fruits of the Coronite can be eaten by the flower moth. Only a suitable insecticide will allow to cope with it, for example, chlorophos from 0.1% to 0.3%.
Thunberg barberry is sometimes sick with powdery mildew. Its main symptom is an unpleasant whitish coating on both sides of leaf plates, berries and even shoots. In the autumn period, black formations are formed, which make it possible to winter the fungus. For treatment, colloidal sulfur of the required percentage or sulfur-lime broth, which is used every 2-3 weeks, will be required. The most affected parts will need to be cut and burned. If orange spots appeared on the bush, then we are talking about rust, which Bordeaux fluid successfully copes with.
If “Coronita” became covered with brown or yellow spots, and then the leaves began to fall off, then it is worth treating the culture with copper-containing preparations.
Use in landscape design
In Thunberg’s barberry garden, Coronita is most often used as an accent. It may turn out to be a contrasting spot in the composition of conifers, part of a rock garden, or the main part of a hedge or a border. To grow into a full-fledged border, by the way, it will be from 6 to 7 years. It is impossible without barberry and the design of the garden in the eastern style. It is also necessary to mention that barberry lends itself well to shaping, therefore skillful gardeners can transform the bush into an original figure.
See below for how to care for this type of barberry.