Siebold Walnut
Siebold nut (lat. Juglans sieboldiana) is a representative of the genus Walnut of the Walnut family. Its natural habitat is Sakhalin, the Kuril Islands and the mountain forests of Japan (the islands of Hokkaido, Hondo, Kyushu, Honshu, etc.).
It grows mainly in deciduous and mixed forests, as well as in plantations of cryptomeria, scarlet, palmate maple, Manchurian ash, arborvitae and other plants. A relatively long-lived species, the average age is 200-300 years.
Characteristics of culture
Siebold”s walnut is a deciduous tree up to 20 m high with a trunk covered with greenish-gray bark. The branches are bare, gray, often with a yellow tint. Young shoots are light gray, glandular-hairy. The buds are flattened, elongated or rounded, up to 0. 3 cm in diameter.
The leaves are quite large, sitting on a glandular-pubescent petiole in the amount of 9-21 pieces. The leaves are elliptical or oblong-ovate, up to 18 cm long, rounded at the base, pointed at the ends, serrated along the edge. On the outside, the leaves are green, pubescent with sparse hairs; on the inside, they are light green, densely pubescent with reddish or yellow hairs. The flowers are small, inconspicuous, collected in earrings, the length of which varies from 15 to 30 cm.
The fruit is round or ovoid, with a hairy adhesive surface, and does not spontaneously crack when ripe. The nut is ovoid, slightly wrinkled or smooth, has a pointed apex and a rounded base. The nut shell is thick; inside there is a small core, occupying 25-30% of the endocarp (nut). The fruits ripen in September — October. The fruits are used for food. Wood is valued in the furniture industry.
Subtleties of reproduction
Siebold nut is propagated by seeds, cuttings and grafting. Sowing is carried out in the fall, immediately after harvest. Seed germination is 30-70%. It is necessary to plant at least 3-5 seeds at a time. The substrate for crops must be absolutely clean, loose, fertilized and moderately moistened. On soils contaminated with rhizomatous weeds, the seed will not germinate. The seed is placed in the hole in a horizontal position. Deep embedding is undesirable. It is important to protect crops from the invasion of mice and other rodents; for this purpose, the beds are covered with a metal mesh.
Shoots appear the next year, usually in June — July. Initially, a white root emerges from the seed, and then a green stem and two leaves. Siebold nut seedlings are transplanted no earlier than after 3-4 years. Experienced gardeners advise sowing seeds immediately in a permanent place, since plants are difficult to tolerate transplantation, because already at a young age they form a long root that goes deep into the soil. If replanting cannot be avoided, then during sowing, slate or other dense material is placed in the hole (at a depth of 40-60 cm). It will prevent active root growth in depth.
Care
The Siebold nut cannot be called a whimsical plant. The main procedures for caring for a crop include regular watering, sanitary pruning, application of mineral and organic fertilizers, prevention of diseases and pests, loosening the soil in the tree trunk area, removing weeds and mulching. Young plants need shelter for the winter. Siebold nut is watered at least 2 times a month at the rate of 25-30 liters per adult tree. During drought, the amount and frequency of watering is increased. Plants are fed in two stages: in the spring — with nitrogen fertilizers and organic matter, in the fall — with phosphorus and potassium fertilizers.
Siebold nut or ailantholifolium in St. Petersburg
Siebold Walnut
Siebold nut (lat. Juglans sieboldiana) is a representative of the genus Walnut of the Walnut family. Its natural habitat is Sakhalin, the Kuril Islands and the mountain forests of Japan (the islands of Hokkaido, Hondo, Kyushu, Honshu, etc.).
It grows mainly in deciduous and mixed forests, as well as in plantations of cryptomeria, scarlet, palmate maple, Manchurian ash, arborvitae and other plants. A relatively long-lived species, the average age is 200-300 years.
Characteristics of culture
Siebold”s walnut is a deciduous tree up to 20 m high with a trunk covered with greenish-gray bark. The branches are bare, gray, often with a yellow tint. Young shoots are light gray, glandular-hairy. The buds are flattened, elongated or rounded, up to 0. 3 cm in diameter.
The leaves are quite large, sitting on a glandular-pubescent petiole in the amount of 9-21 pieces. The leaves are elliptical or oblong-ovate, up to 18 cm long, rounded at the base, pointed at the ends, serrated along the edge. On the outside, the leaves are green, pubescent with sparse hairs; on the inside, they are light green, densely pubescent with reddish or yellow hairs. The flowers are small, inconspicuous, collected in earrings, the length of which varies from 15 to 30 cm.
The fruit is round or ovoid, with a hairy adhesive surface, and does not spontaneously crack when ripe. The nut is ovoid, slightly wrinkled or smooth, has a pointed apex and a rounded base. The nut shell is thick; inside there is a small core, occupying 25-30% of the endocarp (nut). The fruits ripen in September — October. The fruits are used for food. Wood is valued in the furniture industry.
Subtleties of reproduction
Siebold nut is propagated by seeds, cuttings and grafting. Sowing is carried out in the fall, immediately after harvest. Seed germination is 30-70%. It is necessary to plant at least 3-5 seeds at a time. The substrate for crops must be absolutely clean, loose, fertilized and moderately moistened. On soils contaminated with rhizomatous weeds, the seed will not germinate. The seed is placed in the hole in a horizontal position. Deep embedding is undesirable. It is important to protect crops from the invasion of mice and other rodents; for this purpose, the beds are covered with a metal mesh.
Shoots appear the next year, usually in June — July. Initially, a white root emerges from the seed, and then a green stem and two leaves. Siebold nut seedlings are transplanted no earlier than after 3-4 years. Experienced gardeners advise sowing seeds immediately in a permanent place, since plants are difficult to tolerate transplantation, because already at a young age they form a long root that goes deep into the soil. If replanting cannot be avoided, then during sowing, slate or other dense material is placed in the hole (at a depth of 40-60 cm). It will prevent active root growth in depth.
Care
The Siebold nut cannot be called a whimsical plant. The main procedures for caring for a crop include regular watering, sanitary pruning, application of mineral and organic fertilizers, prevention of diseases and pests, loosening the soil in the tree trunk area, removing weeds and mulching. Young plants need shelter for the winter. Siebold nut is watered at least 2 times a month at the rate of 25-30 liters per adult tree. During drought, the amount and frequency of watering is increased. Plants are fed in two stages: in the spring — with nitrogen fertilizers and organic matter, in the fall — with phosphorus and potassium fertilizers.
