Location: Osmanthus fragrans bonsai should be placed in a warm and sunny place, and it should be properly shaded in summer to avoid direct sunlight. The area north of the Yangtze River must be kept indoors in winter, and it is safer to keep the room temperature at 0 ~ 5℃. You can leave the house next spring.
Watering: Osmanthus fragrans pot soil should master the principle of not watering, and it should be watered thoroughly. Generally, it is watered once every 3-4 days in spring and autumn, once every day in summer and once every 7- 10 day in winter. Water in the morning and evening in summer and around noon in winter, so that the water temperature is close to the soil temperature, and the roots will not be damaged by sudden cooling and heating. Water properly in autumn, and prevent the basin soil from getting too wet or accumulating water in rainy season.
Fertilization: Osmanthus fragrans is mainly ornamental, and sufficient fertilizer should be supplied. Nitrogen fertilizer can be applied 1 ~ 2 times when topping to promote the growth of branches and leaves; Before flower bud differentiation and flowering, phosphate fertilizer is mainly applied. Before fertilization, the pot soil should be slightly dry, and the soil should be loosened first to facilitate the absorption of fertilizer. Water it once the next day after fertilization. If compost or manure is used, it must be completely decomposed before use. The concentration of chemical fertilizer calcium superphosphate shall not exceed 2%.
Pruning: Pruning of osmanthus fragrans should be carried out after autumn, and the upper branches should be cut off to balance the tree potential. Too dense branches should be thinned, weak branches should be removed, and nutrients should be concentrated to facilitate flowering. Plastic pruning combined with water and fertilizer management can improve the robust growth of osmanthus bonsai and maintain a beautiful posture.
Pot turning: Osmanthus bonsai can be turned over every 2 ~ 3 years to change the soil. The new pot should be bigger to facilitate the growth of osmanthus roots. Combined with turning pots, cutting off some old roots and withered roots, removing some old soil with bamboo sticks, replacing it with loose and fertile new soil, putting rotten cake fertilizer at the bottom of the pot as base fertilizer, and compacting the soil, which can promote the prosperity of osmanthus fragrans.
Pest control: Common diseases of Osmanthus fragrans include leaf spot, sooty blotch, algae spot, root rot, iron deficiency, etc., which should be controlled according to the condition. Leaf spot, sooty blotch and algae spot can be controlled by spraying 0.5 Bordeaux solution or 5% carbendazim 500 ~ 1000 times solution; In the prevention and control of root rot, attention should be paid to keeping the soil loose and breathable, without water accumulation; If root rot is caused by fungi, the roots can be watered with 200 ~ 300 times amobam solution. The common pests of osmanthus fragrans include sawfly, whitefly, mite, white scale, yellow thorn moth and so on. Sawflies, whiteflies and mites can be sprayed with 40% dimethoate 1500 ~ 3000 times, except for manual brushing. The first and second generation nymphs can be sprayed with 40% dimethoate 1000 times solution or 40% chlorpyrifos 500 times solution.
(2) View
Osmanthus fragrans is a famous fragrant flower, with green leaves all year round, beautiful and clean tree posture, full of golden branches and green leaves and yellow flowers when it is in full bloom, and its fragrance is overflowing for a long time, which makes people feel relaxed and happy. Osmanthus fragrans is mostly open in autumn, so it has the reputation of "monopolizing Sanqiu better than others". Osmanthus fragrans blooms in four seasons and has a long viewing period. There is also a kind of "cold dew osmanthus", which is open in late autumn and has a late flowering period. Wang Wei, a poet in the Tang Dynasty, wrote a poem "Coody Leng is silent and osmanthus is wet"