Kerria Japanese - gorgeous and hardy
Spring-flowering shrubs, which can argue in their brightness of colors with the best primroses, are always associated with forsia. But there is one more culture, already in May setting the tone for lush spring flower beds and discounts, and then repeating the show also on the eve of autumn. This magnificent Japanese kerriya is one of the best plants in its adaptability. Even in winter, Kerry has something to show off.
- Solar Magnificence Kerry
- Decorative forms and varieties of Kerria
- The use of kerry in decorative gardening
- Conditions needed by Kerries
- Features planting Kerria
- Japanese Kerry Care
- Trimming and shaping Japanese Kerry
- Fertilizers for Japanese Kerry
- Winter Kerry Japanese
- Pest and Disease Control
- Reproduction of Japanese Kerria
Solar Magnificence Kerry
Among the ornamental shrubs, Kerry Japanese is considered a special, rare and exclusive star. She is not as popular as Forsythia. Often the plant bypasses their attention, thinking that such its pompous color and effect is a sign that the plant will have to provide complex and tireless care. But Kerria is one of the most unpretentious plants that can be recommended even to the most inexperienced gardeners. The endurance and unpretentiousness of this shrub can only compete with its decorative advantages.
Kerria Japanese (Kerria japonica) - Oriental in origin, and in style too, decorative deciduous shrub from the Pink family. The specific name of Kerria often leads to confusion, because the birthplace of this plant is actually considered not Japan, but China. The folk names of the plant are vivid evidence of its extraordinary beauty of flowering. Easter or Japanese rose - this is how Kerria is known all over the world, and it is especially loved in European landscape design.
The average height of kerry is limited to 1.5-2 m (up to a maximum of 3 m kerry grows both in nature and with free cultivation without formation in gardens), it is easily regulated by formation and pruning. These are compact deciduous shrubs with thin shoots. The shoots of kerry are green and straight, at first they form a rather strict pyramidal crown, but with age, the bush becomes more lush and curly, the shoots bend, the shape of the bush changes. One of the most valuable features of Japanese kerriya - amazingly elegant, not too thick, but seemingly curly crown. This shrub seems fluffy and elegant at any time of the year, even in winter impressing with its lace pattern and bright green color of shoots. Kerry shoots are thin, look amazingly elegant and only emphasize the beauty of the plant. All kerries have small, but beautiful leaves of lanceolate shape, the length of which varies from 2 to 10 cm, and a width of up to 5 cm. The saw-edged edge of the leaves decorates the plant, as well as their light green color, in summer. The underside of the leaves is pubescent; the upper side is bare. The yellow spring and autumn bloom of kerria seems to pick up the crown too: in the fall, the leaves of the plant repaint in a bright yellow color, completing the yellow parade of the plant.
Flowering Japanese kerriya starts in April, and in regions with severe winters - in May and continues in June, it is striking in its duration. In favorable weather and high temperatures, sufficient soil moisture, shrubs bloom repeatedly in August or September. On average, the flowering period of Kerria lasts from 25 to 35 days, sometimes more than a month and a half. The duration of the flowering period directly depends on the weather and growing conditions. If Kerria froze over the winter, then the bush blooms only by August-September.
Kerry flowers are solitary, outwardly strongly resemble buttercups with their rich yellow color, simple petals and a fluffy center of stamens. Flowers are located at the ends of shoots or in the axils of future leaves. The diameter of the flowers ranges from 3 to almost 5 cm in the best varieties. Along with simple forms, there are terry varieties. Kerry is most similar to dandelions in its smell.
After flowering, almost black prefabricated spherical fruit drupes are tied, but only in regions with mild winters. Kerry does not bear fruit in the middle lane.
Decorative forms and varieties of Kerria
It is very difficult to get lost in the diversity of kerriyos, because in the genus of these shrubs, kerriya is the one and only plant. Yes, and decorative forms or varieties can literally be counted on the fingers. But you can’t call boring kerry. For those who want something unusual or even more vibrant, Kerria offers a large selection of decorative varieties. Kerrias with simple and double flowers are on sale, and varieties allow you to choose between sizes and structural features of the bushes, lush color or various silhouettes.
The best varieties of keriya for the middle band are rightly ranked:
- Japanese kerria "Picta" with a meter bush, variegated leaves, on the surface of which almost white spots and rims unevenly appear (Japanese variegata "variegated" is sold under the same name, these names can conditionally be considered synonyms);
- slow-growing form with asymmetrical white-fringed leaves and a more plain-looking bush “Albomarginata”;
- Japanese Kerry "Argenteomarginata" with a thinner white border and fairly high two-meter bushes;
- Japanese Kerria "Plena", which is often called a buttercup bush in catalogs and nurseries - an actively growing form, especially suitable for hedges due to the formation of numerous root shoots;
- one of the most popular Japanese curria "Pleniflora", famous for its golden shade of the color of double flowers, more like pompons;
- Golden Guinea variety with an impeccable shape of simple flowers, a dazzling lemon-dark color and an unusual profusion of flowering;
- Kin Kan variety with simple but surprisingly blooming flowers;
- white-flowered form "Albiflora".
The only “but” when choosing varietal plants - you must definitely choose the varieties that are grown in your area, because imported or non-acclimatized cultivars can unpleasantly surprise you with loss in the very first winter or poor flowering.
The use of kerry in decorative gardening
Japanese Kerria is equally good as a solitary shrub (soloist), and in a large group. This plant is able to cope with any task. Kerria can be combined with other shrubs and woody, herbaceous plants of any size, provided that the same conditions are suitable for them.
Kerria can be used even in the gardens of the smallest size, in particular, on the small courtyards of the townhouse. This is a compact and highly decorative shrub that will not get lost in a large garden and can perform a variety of decorative tasks in small areas.
The main feature that Kerria appreciates is early and double flowering. This is one of the most spectacular spring flowering shrubs. As a spring or autumn accent, Kerry is introduced into the continuous flowering baton, grown in seasonal compositions.
Japanese Kerria in the design of the garden is used:
- in hedges;
- on flower beds;
- in mixed discounts;
- on single flower beds;
- for decorating lawns (singly or in small groups);
- to create background arrays;
- to decorate the front garden;
- on glades from groundcover;
- in landscape landings.
This shrub feels good not only in open soil, but also in container culture. And in tubs, and in pots, and in stone flower girls or socles, Kerria will place magnificent accents in the garden, fit into the pot garden or add expressiveness to relaxation areas.
Japanese Kerria can also be used for distillation, decoration of winter and spring interiors with flowering branches.
The best partners for Kerry Japanese:
- hazel, rhododendrons, spirea, Forsythia, mahonia, cicatris, derain, cinquefoil and other landscape shrubs;
- decorative leafy perennials and groundcover - heicher, phlox, periwinkle, tiarella, tenacious;
- spring stars from tulips and daffodils to primroses and forget-me-nots
Conditions needed by Kerries
Kerria perfectly adapts to a wide variety of lighting. This shrub will be an adornment for sunny, light, half-shaded, and even shady locations, where only white-flowering shrubs can compete with the effect of highlighting with kerry. The ability to grow large trees even in the scattered shadow of the trees without completely losing their ability to bloom magnificently is simply explained: Kerria begins the parade long before the bulk of the leaves bloom in the trees. But the intensity and abundance of blooming kerria in strong shading is reduced compared to plants growing in open areas. In sunny southern places, flowers are prone to burnout. When choosing a place for planting kerry, it is worth remembering that the plant does not like open and blown places, is not windproof enough due to the fragility of the shoots and will reveal its beauty only in protected areas.
The soil requirements of this shrub are also quite modest. Kerria is able to take root anywhere, but reaches the greatest decorative effect on high-quality garden soils. Japanese Kerria prefers moderately moist soils, it can grow even in damp conditions provided that good drainage is laid. The main thing is that the soil is loose, loamy or loamy, not too fertile and not depleted. Sand should be added to heavy soil during planting, and organic and mineral fertilizers to infertile soil.
One of the main advantages of Kerry is its resistance to polluted environments. It can be used in urban landscaping, decorating areas near highways and other places with increased gas contamination.
Features planting Kerria
Japanese Kerria can be planted in spring and autumn. For the middle lane, spring planting is considered preferable, but Kerria can be planted in the fall, provided that there is good shelter for the winter - a month and a half before the arrival of stable frosts. In spring, planting seedlings is carried out before budding. If you buy Japanese Kerry seedlings with a closed root system, then plants can be planted throughout the active garden season.
Kerria is planted in landing pits with a depth and diameter of about half a meter. In places with high soil moisture, pits are made deeper and a high drainage layer is laid at the bottom. The excavated soil is improved by adding organic and mineral fertilizers. Kerria is installed in the landing pit while maintaining the same level of deepening, with the root neck not lower than the soil level. After planting, it is necessary to carry out abundant watering and mulching.
Japanese Kerry Care
Kerries are considered easy-to-care shrubs, but they still need additional watering. Without drought-compensating water procedures, Kerria can lose its attractive foliage much earlier than expected, its flowering will deteriorate and decrease. Kerria does not need regular and frequent watering: it’s enough not to forget about the basic 2–3 very plentiful waterings during the summer, which will not allow the plant to lose its decorativeness in the driest of seasons. Additional procedures are carried out during flowering and on the hottest days.
Trimming and shaping Japanese Kerry
The main cropping is carried out in the spring. Like planting, sanitation and shaping procedures must be completed before the sap and kidney swelling begin. The plant must be cut off all dry, damaged shoots affected by frost to healthy wood. After sanitary cleaning, all remaining shoots (if necessary, maintain strict forms of the bush) are shortened by a quarter to a third of the height to stimulate thickening and get a more effective and abundantly blooming crown. In kerrias growing without formation, pruning can be omitted or the tips of the shoots slightly shortened to stimulate growth.
In the summer on this shrub, pruning is reduced to shortening faded shoots to stimulate the growth of young twigs. Shortening is usually carried out in June, a few days after flowering, to shoots that did not bloom during the first wave. On adult kerrii older than 5-6 years old, also, after flowering, the oldest, four- and five-year-old shoots are removed so that the bush is constantly updated. In summer, if necessary, thinning overly thickened bushes is also carried out.
The branches of the plant are thin and pruning is easy, but you need to use only very sharp tools and try not to cause the branches much harm, making clean and smooth cuts.
Fertilizers for Japanese Kerry
Mandatory top dressing is made for the bush after pruning - early spring and summer. Kerria is content with mulching with compost and full mineral fertilizers in liquid form. The plant does not like manure, but loves additional feeding with wood ash.
Winter Kerry Japanese
Kerry frost resistance directly depends on where the plant was cultivated. Typically, for this shrub, frost resistance is stated below average, the ability to withstand frosts down to -20 degrees and freezing to snow level with more severe frosts. But in fact, it is better to clarify the frost resistance for each particular plant, because the Kerries grown by local nurseries, as a rule, do not freeze even during a very unstable winter with sharp jumps in temperature. Freezing to the level of snow cover as a result of severe frosts, kerria recovers after trimming damaged tissues in just a few weeks and blooms with bloom in the terms typical for the second wave of unfrozen shrubs - in late summer and early autumn.
The main difficulty in organizing the proper wintering of the bush is the need to guarantee the dryness of the plant. When jamming, warming, stagnation of thawed melt, the reason for Kerry will almost certainly die. Therefore, in the fall, even local, acclimatized plants always additionally protect. You can simply cover the shrub with waterproof materials and mulch the trunk circle with dry leaves. But if you make the shelter more thorough, save the shoots until spring from freezing, flowering will come in typical terms and will be amazingly plentiful. As a shelter, it is enough to organize the binding or bending of the crown, filling the bush with dry leaves with a light cover with a waterproof covering material (any film is suitable) with holes for ventilation. Such a simple protection will help protect the plant from severe frosts, and from excess moisture. Shelter for the winter is created only when the air temperature drops to minus 10 degrees (this is done to prevent warming).
Shelter is removed gradually, only after strong return frosts have gone away, carefully accustoming sensitive shoots to the sun. Kerry unrolling is carried out in stages, first removing the film, then reducing the height of the dry hilling to 15 cm, and then removing the shelter altogether.
Pest and Disease Control
Japanese Kerria is one of the most resistant decorative flowering shrubs. It can suffer from freezing, but pests and diseases on the plant are very rare.
Reproduction of Japanese Kerria
This garden shrub easily allows you to independently grow your collection. Kerria is propagated by seeds and vegetative methods.
Branch root growth is the easiest way to get seedlings from all Japanese kerrias, even varietal ones.The shrub is constantly expanding, growing due to root processes. And this property simplifies not only the creation of dense hedges, but also allows you to get large offspring. New plants can also be obtained thanks to the rooting of the layering: it is enough to fix the shoots in the soil and constantly maintain its moisture, and in the spring of next year, new bushes can be planted from the mother plant.
Kerry cuttings take root quickly, and plants grow quite actively, reaching decorativeness in a few years. Kerry, when treated with growth stimulants, is characterized by a very high rooting rate - up to 100%. Rooting is carried out in a standard substrate under a hood.