Cultivation method of Oshima cherry
As a representative variety of Japan's native cherry blossoms, Oshima Sakura is favored by gardening enthusiasts for its snow-white petals and unique aroma. However, many flower lovers often encounter problems such as poor flowering and withered leaves during home maintenance. The fundamental reason is that they fail to grasp their growth characteristics. This article will systematically sort out five key maintenance dimensions to help you create a cherry blossom landscape with lush flowers and leaves. 1. Soil matrix ratio plan Soil selection with acid-base balance is extremely sensitive to the soil environment. The ideal cultivation substrate should be composed of 70% clay soil +30% river sand, and the pH value should be strictly controlled within 5.5-6.5 range. It is recommended to use pH test paper every quarter. When the value is high, it can be adjusted by embedding pine needle soil or watering diluted rice vinegar (1:50). Organic matter improvement techniques incorporate 20% decomposed sheep manure and 10% perlite into the basic soil, which not only improves air permeability but also provides sustainable nutrients. Special reminder: Most commercially available nutrient soils contain a large amount of coconut bran. Such dry substrates may easily cause root dehydration and need to be completely avoided. 2. Light control strategy As a strong positive tree species, it is recommended to ensure 6 hours of direct light every day. Garden planting needs to ensure that the tree spacing is ≥3 meters, and balcony potted plants should be rotated 180° every week to allow the plants to receive even light. At noon in midsummer, a sunshade net is needed to filter 30% strong light to prevent leaf burns. 3. The scientific water supply cycle table establishes a "three-look watering method": look at the soil layer (the surface layer is 3cm dry), look at the leaves (there is no dew in the morning), and look at the seasons (15 days per time in spring and autumn, 10 days per time in summer, water supply in winter). It is recommended to use the circular ditch irrigation method, digging a 15-cm deep ditch along the outer edge of the crown projection to slowly infiltrate, so as to avoid directly watering the root neck. 4. Fertilizer application Timeline: Bone meal + decomposed cake fertilizer (3:1) is applied during the germination period in February; ferrous sulfate (1000 times solution) is top-applied after falling flowers in May; potassium dihydrogen phosphate (800 times solution) is sprayed during the autumn shoot growth period in September. Special note: Excessive nitrogen fertilizer will cause branches to grow excessively, and the annual application rate will not exceed 200g/plant. 5. Disease emergency treatment plan for pest and disease prevention and control map Gummosis occurs most frequently in the plum rainy season. If the trunk is found to have gum seepage, the diseased tissue should be scraped off immediately and a mixture of 50% carbendazim 200 times solution + Vaseline should be applied. Rhizobia requires thorough removal of the tumor, irrigation of the roots with K84 biological inoculant, and replacing the soil within 50cm around. Biological pest control method hangs yellow sticky insect boards (3-5 pieces per plant) during the aphid outbreak, and red spiders can be sprayed with the whole plant with neem oil (10ml mixed with 1L water), twice a week for three weeks. It is recommended to mix planting peppermint, rosemary and other insect repellent plants to form an ecological barrier.
By accurately controlling the five dimensions of soil environment, light intensity, water supply, nutrient ratio and pest and disease control, Oshima cherry can fully achieve an ideal annual growth of 80-120cm in a family environment. It is recommended to establish a maintenance log to record data on each pruning and fertilization, and continuously optimize the management plan based on the plant's response, so that this cherry blossom treasure from Tokyo can shine in the land of China.