Family: Rutaceae long green vine Alias: two back needles, Jinniu Name source: The double-sided needle is named after its blade has two sides of the midrib. Morphological characteristics: Its stems are darkish brown in colour, with a few pairs of feathered leaves, and dark greenish-brown ovules. Pale yellow flowers with aromas, stems, branches, leaves have prickles, seeds black ovoid. Flowering from March to April, fruiting from September to October. Due to its beautiful tree-like posture, evergreen season, resistance to transplanting, and easy survival as well as excellent plant characteristics, it has been used for making bonsai or potted plants in recent years. Growth habits and distribution areas: The double-faced needles have ample sunshine, warm and moist environment, and are also shade-tolerant. The suitable growth temperature is 30°C. In addition to watering in a timely manner to keep the basin soil moist, it can be applied every 15 days or so to apply a thin rot cake water, or diluted urea liquid fertilizer. In the saline-alkali area in the north, the manure fertilizer water mixed with ferrous sulfate and soybean cake can be poured once every ten days to improve the soil quality and prevent alkalinization of potted soil. The cold resistance of Ziziphus auratus is somewhat poorer. In the area north of the Yangtze River, it should be moved into an indoor environment where the sunlight is sufficient and the temperature is above 5°C. Two-sided needles were born in the wilderness and mixed forests of the mountains in southern China and were cultivated artificially. Maintenance method: Two-handed bonsai with pots should choose Yixing zisha basin, color glazed pots and so on. The two sides are not strict with soil requirements, but avoid salt and alkali, avoid water, potted soil to loose air, slightly acidic mountain humus, garden soil is appropriate, can also be used slag 50%, sand 10%, rot 40% soil mixed preparation. After the new pile is placed on the basin, cover the pile with a transparent plastic bag or film, leaving a 3 cm to 5 cm vent, keep the basin moist, and place it in the shading place. When most sprouts grow to about 5 cm, they can be removed on rainy days. After October, it can be gradually transferred to sunny places for normal maintenance. Use characteristics: The two-sided needle-shaped body is beautiful and changeable, suitable for processing into cliff-shaped, natural-shaped, water-like and other bonsai art forms. Machining styling techniques, mainly pruning, supplemented by climbing, trimming from March to September are available, and the squatting is mostly based on slinging. By pulling the tying method, the main branches need to be shaped in a general manner. Gradually improve molding through pruning. On both sides of the bonsai bonsai stems are vigorous, squishy, ​​colorful, floral leaves odd, dignified, extraordinary bearing, in addition to the performance of the ancient mountains and clear and elegant charm, but also more vigorous and simple, solemn and elegant unique beauty. Zanthoxylum nitidum is a traditional Chinese medicinal material, with heat and detoxification and other effects.
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Scientific name: zanthoxylumnitidum (Roxb.) DC.