2, soil: osmanthus likes fertilizer, suitable for fertile loose, well-drained sandy loam. Potted osmanthus culture soil, usually with garden soil, heap of stable manure and river sand 1 to 3 preparation, pay attention to disinfection, so as not to infect pests and diseases.
3, cultivation: osmanthus should be planted in early spring or autumn, before potting in the bottom of the pot on a layer of river sand or vermiculite, in order to facilitate aeration and drainage, and then a layer of peat or fine mud about 2 to 3 cm thick, up to the depth of the pot of 1 to 3. Then, the roots of osmanthus seedling with a ball of soil into the pot, congested with cultured soil, pressed tightly with a finger, fill the soil to close to the mouth of the pot, the soil surface than the mouth of the pot should be lower than the 2 to 3 cm, in order to water and fertilize. In order to facilitate watering and fertilization. After planting should be watered thoroughly, and then moved to the shade for about 10 days, so that it "potting", and gradually resume growth.
4, watering: osmanthus potting soil to master not dry not water, watering is watered through the principle. General spring and fall watering every 3 to 4 days, summer high temperature watering once a day, every 7 to 10 days in winter watering, summer watering in the morning and evening, winter watering before and after noon, so that the water temperature and soil temperature close to the temperature, not to sudden cold and heat, injury to the root system. Fall watering should be moderate, rainy season to prevent potting soil too wet or waterlogged.
5, fertilization: osmanthus bonsai to flower-oriented, should be supplied with adequate fertilizers, tips can be applied 1 to 2 times nitrogen fertilizer to promote the growth of branches and leaves, bud differentiation and flowering before the application of phosphorus fertilizers based on the fertilizer before the potting soil should be a little drier, and it is desirable to loosen the soil, so that the absorption of fertilizer. Fertilizer the next day should be watered once. If you use compost or stable fertilizer, must be completely rotted before use. Application of chemical fertilizer calcium superphosphate, its concentration should not exceed 2%.
6, pruning: osmanthus tree shaping and pruning, it is appropriate to carry out in the autumn, cut off the upper too strong branches, in order to balance the tree. Too dense branches should be thinned, and remove the sick and weak branches, so that nutrients are concentrated, in order to facilitate flowering. Plastic pruning with water and fertilizer management can improve the robust growth of osmanthus bonsai and maintain a beautiful posture.
7, change pots: osmanthus bonsai every 2 to 3 years can turn over the pot to change the soil. The new pot should be larger, in order to facilitate the growth of osmanthus roots. Combined with the pot, cut off part of the old roots and dead roots, with a bamboo stick to pick off part of the old soil, replaced with loose and fertile new culture soil, and placed in the bottom of the pot of rotting cake fertilizer as a base fertilizer, filling the soil must be compacted, so as to promote osmanthus flowers and foliage.
8, disease: osmanthus common diseases are leaf spot disease, coal stain disease, algae spot disease, root rot, iron deficiency disease, etc., should be for disease prevention and control. Leaf spot disease, coal stain disease and algae spot disease can be sprayed 0.5 Bordeaux solution or 5% carbendazim 500 to 1000 times liquid control. Root rot should pay attention to keep the soil loose and breathable, do not accumulate water, such as root rot caused by fungi, can be used to water the roots with 200 to 300 times of ammonium diclofenac.