How to propagate Kerria japonica? Mastering these key points is important
Kerria japonica is native to China from North China to South China, prefers warm, semi-shaded locations, and is not demanding about soil. It can be propagated by division, cuttings, and sowing; division is suitable for double-flowered varieties. The editor will now introduce the commonly used propagation methods for Kerria japonica.
Kerria japonica
I. Key points for rapid propagation
In spring, collect one-year-old branches as explant material for rapid propagation and propagate them directly on a smart seedling bed. In the growing season, collect current-year semi-lignified softwood shoots as explant material, keep 1-2 leaves at the upper end, or use one leaf and one bud, and propagate on a seedling bed with river sand or perlite as the substrate. Turn on the rapid propagation smart system, and the survival rate reaches 100%.
II. Division
Often used for double-flowered varieties, carried out after leaf fall in autumn and before bud break in spring. Propagation method: division is mainly used for propagation; the mother plant does not need to be dug up. Carry it out in early spring and late autumn, using a knife or spade to directly separate new plants each with 1-2 branches from the mother plant in the soil, then take them out and transplant them. The mother plant left in the soil can be divided again the following year. Double-flowered Kerria japonica is suitable for the division propagation method.
III. Cuttings
In the plum rain season, cut softwood shoots for cuttings; for early spring cuttings, use hardwood cuttings (in March) with ungerminated one-year-old branches. In the plum rain season, around June, use softwood cuttings with robust current-year branches, keep half of the leaves, and the cutting length is 12-450px. Insert them into brown soil, matured soil, or sandy soil. If inserted in the open field, shade them to prevent drying.
IV. Sowing
Suitable for single-flowered varieties; germination occurs about 20 days after sowing. The sowing propagation method is only used when mass-propagating the single-flowered original species. After the seeds are harvested, they need low-temperature sand storage at 5°C for 1-2 months, and are sown the following spring. After sowing, cover with fine soil and then with grass; after seedlings emerge, build a shade frame.
Introduction to Kerria japonica, cultivation methods for Kerria japonica, care knowledge for Kerria japonica
Kerria japonica, also known as Fengtang flower. Kerria japonica can be planted in the ground or in pots. Kerria japonica also has two varieties, one is double-flowered Kerria japonica, and the other is white Kerria japonica. The former has layer upon layer of petals and grows like a small ball, and is a variety with ornamental value. White Kerria japonica is relatively rare and is highly esteemed by Japanese people. Now let's learn the planting methods for Kerria japonica.
Morphological characteristics of Kerria japonica
Kerria japonica is a deciduous shrub, 1-2 m tall, rarely up to 3 m; branchlets green, cylindrical, hairless, often arching and pendulous, young branches angular. Leaves alternate, triangular-ovate or ovate, apex long acuminate, base rounded, truncate, or slightly cordate, margin with sharp double serrations, both surfaces green, upper surface hairless or sparsely pubescent, lower surface pubescent along veins or in vein axils; petiole 5-10 mm long, hairless; stipules membranous, band-shaped lanceolate, ciliate, caducous. Flowers solitary, borne at the apex of current-year lateral branches, pedicel hairless; flower diameter 2.5-6 cm; sepals ovate-elliptic, apex acute, with a small tip, entire, hairless, persistent in fruit; petals yellow, broadly elliptic, apex concave, 1-4 times longer than sepals. Achenes obovoid to hemispheric, brown or blackish brown, surface hairless, wrinkled. Flowering period April-June, fruiting period June-August. Leaves ovate to ovate-lanceolate, 2-10 cm long, 1.5-4 cm wide, apex acuminate, base rounded or slightly cordate, margin with sharp double serrations, surface hairless or sparsely short-pubescent, underside or along veins and between veins with short pubescence.
Ecological habits of Kerria japonica
Kerria japonica likes warm, humid, and semi-shaded environments, has poor cold resistance, and is not demanding about soil; it grows best in fertile, loose sandy loam, and grows in mountain slope thickets at an altitude of 200-3000 m. Kerria japonica is native to China from North China to South China, likes warm, humid, and semi-shaded environments, has poor cold resistance, and is not demanding about soil; it grows best in fertile, loose sandy loam. It is commonly propagated by division, cuttings, and sowing. Division is suitable for double-flowered varieties. Cuttings include spring hardwood cuttings and plum rain season softwood cuttings. Kerria japonica can be planted in the ground or in pots. Transplanting or repotting should be done before spring bud break (February to March) or during October, and the original soil should be kept. When transplanting, apply base fertilizer to encourage many new branches and more flower buds.
Propagation methods of Kerria japonica
Kerria japonica is propagated by division, cuttings, and sowing.
Key points for rapid propagation
In spring, collect one-year-old branches as explant material for rapid propagation and propagate them directly on a smart seedling bed. In the growing season, collect current-year semi-lignified softwood shoots as explant material, keep 1-2 leaves at the upper end, or use one leaf and one bud, and propagate on a seedling bed with river sand or perlite as the substrate. Turn on the rapid propagation smart system, and the survival rate reaches 100%.
Division
Often used for double-flowered varieties, carried out after leaf fall in autumn and before bud break in spring. Propagation method: division is mainly used for propagation; the mother plant does not need to be dug up. Carry it out in early spring and late autumn, using a knife or spade to directly separate new plants each with 1-2 branches from the mother plant in the soil, then take them out and transplant them. The mother plant left in the soil can be divided again the following year. Double-flowered Kerria japonica is suitable for the division propagation method.
Cuttings
In the plum rain season, cut softwood shoots for cuttings; for early spring cuttings, use hardwood cuttings (in March) with ungerminated one-year-old branches. In the plum rain season, around June, use softwood cuttings with robust current-year branches, keep half of the leaves, and the cutting length is 12-450px. Insert them into brown soil, matured soil, or sandy soil. If inserted in the open field, shade them to prevent drying.
Sowing
Suitable for single-flowered varieties; germination occurs about 20 days after sowing. The sowing propagation method is only used when mass-propagating the single-flowered original species. After the seeds are harvested, they need low-temperature sand storage at 5°C for 1-2 months, and are sown the following spring. After sowing, cover with fine soil and then with grass; after seedlings emerge, build a shade frame.
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Cultivation methods for Kerria japonica and disease control for Kerria japonica
Kerria japonica with golden flowers covering the tree has a unique charm. In addition to being ornamental, it can also be used as medicine and has effects such as reducing swelling, relieving pain, relieving cough, and aiding digestion. So how is Kerria japonica cultivated? Let's take a look at the cultivation methods for Kerria japonica.
I. Cultivation methods for Kerria japonica
Kerria japonica buds in mid-March, and it is generally suitable to transplant before budding. After planting, attention should be paid to pruning dead branches and old branches. During the growing season, fertilize once every 2 months, and comprehensively renew it once every 2-3 years by cutting off the aboveground part to encourage many new branches. When cultivating in the north, soil should be mounded in winter to prevent branch tip dieback.
Propagation methods of Kerria japonica. Kerria japonica is propagated by division, cuttings, and sowing.
1. Key points for rapid propagation: In spring, collect one-year-old branches as explant material for rapid propagation and propagate them directly on a smart seedling bed. In the growing season, collect current-year semi-lignified softwood shoots as explant material, keep 1-2 leaves at the upper end, or use one leaf and one bud, and propagate on a seedling bed with river sand or perlite as the substrate. Turn on the rapid propagation smart system, and the survival rate reaches 100%.
2. Division: Often used for double-flowered varieties, carried out after leaf fall in autumn and before bud break in spring. Propagation method: division is mainly used for propagation; the mother plant does not need to be dug up. Carry it out in early spring and late autumn, using a knife or spade to directly separate new plants each with 1-2 branches from the mother plant in the soil, then take them out and transplant them. The mother plant left in the soil can be divided again the following year. Double-flowered Kerria japonica is suitable for the division propagation method.
3. Cuttings: In the plum rain season, cut softwood shoots for cuttings; for early spring cuttings, use hardwood cuttings (in March) with ungerminated one-year-old branches. In the plum rain season, around June, use softwood cuttings with robust current-year branches, keep half of the leaves, and the cutting length is 12-450px. Insert them into brown soil, matured soil, or sandy soil. If inserted in the open field, shade them to prevent drying.
4. Sowing: Suitable for single-flowered varieties; germination occurs about 20 days after sowing. The sowing propagation method is only used when mass-propagating the single-flowered original species. After the seeds are harvested, they need low-temperature sand storage at 5°C for 1-2 months, and are sown the following spring. After sowing, cover with fine soil and then with grass; after seedlings emerge, build a shade frame.
II. Disease control for Kerria japonica
1. Yellow leaf disease: Symptoms. When the disease occurs, it first appears as yellowing of the young leaves at the top shoots of the plant. The leaf tissue becomes yellow or pale yellow, but the veins remain green. As the condition worsens, the entire leaf turns yellow or yellowish white, and the leaf margin becomes grayish brown and dies.
Control method: In the early stage of the disease, use a 200-fold ferrous sulfate solution for root irrigation, and spray with a 0.5% ferrous sulfate solution, once every 10 days. After 3-4 consecutive irrigations and sprays, the symptoms can be noticeably improved.
2. Brown spot disease symptoms: In the early stage of the disease, grayish brown lesions appear on the leaf margins. The lesions expand irregularly, grayish brown inside with reddish brown edges. In the later stage of the disease, the lesions dry up, turn brown, and bear black granular bodies.
Control method: Spray with 75% chlorothalonil wettable granules at 800-fold dilution, or 70% mancozeb wettable granules at 400-fold dilution, or 50% anilazine wettable granules at 500-fold dilution, once every 11 days. Spraying 3-4 times continuously can effectively control the disease.
The above iscultivation methods for Kerria japonicaI hope it is helpful to everyone. Friends who like Kerria japonica can try planting some.