"Oleaceae" how to raise sweet-scented osmanthus trees? What are the breeding methods and matters needing attention of potted sweet-scented osmanthus? How to grow well?

Sweet-scented osmanthus is one of the top ten famous flowers in Chinese tradition. There are many varieties of sweet-scented osmanthus, such as cinnamon, silver cinnamon, cinnamon, four seasons osmanthus, etc. Four-season osmanthus can be fragrant in four seasons, which is the best choice for family potted plants. Do you know how to raise sweet-scented osmanthus? Next, I would like to introduce to you the culture methods and matters needing attention of sweet-scented osmanthus.

Culture methods of Osmanthus fragrans

1. Cutting: the cutting time is generally from June to July or from September to October, and sandy loam is suitable for cutting. The semi-mature branches of the same year are selected for cuttings, and the terminal branches are the best. After cutting, it should be shaded and watered in time, and the management of water and fertilizer should be strengthened. Generally, cuttings begin to heal 20 days after cuttage, and can take root in 30-40 days. Cold prevention measures should be taken in winter, and the seedlings can grow to about 30 centimeters in the following year.

2. Pressing: there are two kinds of pressing: high pressure (air pressing) and ground pressure, which can be carried out all the year round. The high pressure method is carried out in the first ten days of April, and the ground pressure method should be carried out in the first ten days of April or the rainy season. Striping should be cut or ring-peeled, and separated from the mother plant after 1 year. The depth of the ground pressure strip is about 4-5 cm, and the more curved the branches are, the better.

3. Grafting: the propagation time of grafting is from March to April. The rootstock uses lobular privet and big leaf privet. The grafting method is branch grafting, cutting grafting, splitting grafting and leaning grafting. Shading and moisturizing are required when grafting. Splicing and splicing require that the interface be as low as possible, usually cutting off the rootstock 3 centimeters above the ground. After binding, the soil is cultivated to the top of the scion, so that it is possible to take root from the part of the scion and improve the survival rate.

4. Sowing: sowing in winter or early spring, strip sowing, row spacing 15-20 cm, 30-40 seeds per meter long, 8-10 kg per mu, covered with humus or burning soil, about 1.5 cm thick, and covered with grass. Generally, it begins to germinate 40-50 days after sowing and lasts for 50-60 days, and the germination is very irregular. The peak period of seedling growth is from July to September, so attention should be paid to topdressing and drought resistance. One-year-old seedlings can come out of the nursery if they are more than 30 cm high.

5. Seedlings coming out of the nursery: after the striping seedlings and grafted seedlings take root, they can be afforested in winter or planted in the nursery to cultivate large seedlings. The height of cutting seedling is more than 30 cm, the sowing seedling is more than 25 cm, and the ground diameter is more than 0.4 cm, which can be afforestation out of nursery or transplanted to large seedling cultivation area. The root system should be kept intact as far as possible when the seedlings are raised, and should be planted in time after the seedlings are raised. If long-distance transportation is needed, attention should be paid to moisturizing.

How to grow Osmanthus fragrans well

1, timely watering: sweet-scented osmanthus pot soil should grasp the principle of whether it is dry or irrigated, but spray fresh water to the leaves once a day. After the Qingming Festival, the sweet-scented osmanthus should be watered once in the open air, which should be watered in the morning and evening in summer and around noon in winter, so that the water temperature is close to the soil temperature, so as not to cause sudden cold and heat, and pay attention not to stagnant water.

2. Rational fertilization: sweet-scented osmanthus is mainly ornamental, and sufficient fertilizer should be provided. Nitrogen fertilizer can be applied twice during shoot sprouting, and phosphorus fertilizer is mainly applied before flower bud differentiation and flowering. The basin soil should be a little drier before fertilization, and it is appropriate to loosen the soil first so that the fertilizer can be absorbed, and water should be watered the next day.

3. Pour the basin and change the soil: the sweet-scented osmanthus should change the soil once every 2 ~ 3 years, cut off part of the old and withered roots, cover the bottom of the basin with a layer of river sand or vermiculite to facilitate ventilation and drainage, and place rotten cake fertilizer as the base fertilizer, the fill must be compacted. The ratio of soil to soil is not very strict, and it can usually be made of garden soil, barnyard manure and river sand.

4. Pruning and shaping: Osmanthus fragrans generally adopt the method of combination of climbing and pruning, which should be carried out after autumn. Plants with poor tree shape can cut off the whole top branch at 2 / 3 or 3 / 4, and plants with too dense branches should be thinned. After flowering, they should also cut off overgrown branches, withered branches, disease and insect branches, dense and thin branches.

5. Overwintering management: sweet-scented osmanthus overwintering room temperature should be kept at 0: 5 ℃ and relative humidity at 50: 80%. Winter cold indoor light should be good, especially before the early spring buds began to sprout, but also required sufficient sunshine, the following year Grain Rain arranged potted sweet-scented osmanthus to come out of the room. After leaving the room, first concentrate on the outdoor leeward to the sun, so that it gradually adapt to the external environment.

6. disease control: the common diseases of sweet-scented osmanthus are leaf spot, coal pollution, algae spot, root rot, iron deficiency and so on. Leaf spot, coal pollution and algal spot can be sprayed with 0.5 Bordeaux solution or 5% carbendazim 500-1000 times. Root rot should pay attention to keep the soil loose and permeable, do not accumulate water.

7. pest control: the common pests of sweet-scented osmanthus are leaf wasp, whitefly, mite, white scale, yellow moth and so on. Leaf wasps, whitefly and mites can be sprayed with 40% dimethoate 1500-3000 times liquid, and Changbai scale can be sprayed with 40% omethoate 1000 times solution or 40% fenitrothion 500 times solution in the first and second generation nymphs except manual brushing.

Culture methods of potted sweet-scented osmanthus

1. Selection of basin soil

Sweet-scented osmanthus is a highly adaptable hope, the demand for soil is not high, clayey soil can still grow, but slightly acidic soil is more conducive to its growth. The basin soil can be mixed with humus soil or peat, garden soil, sand or river sand (the proportion is 5:3:2). After being made, the pH should be kept at 5.5-6.5. The culture soil was disinfected with 0.1% potassium permanganate solution before loading the basin.

2. Proper watering

Sweet-scented osmanthus likes high temperature and dryness, so watering must grasp the principle of "two less and one more", that is, less watering of new shoots before germination, less watering in overcast and rainy days, more watering in summer and autumn, and usually watering to keep soil water content about 50%. Attention should be paid to preventing the accumulation of water and rotting roots in the basin. When the summer temperature should not exceed 35 ℃. Therefore, when it is hot and dry in summer, watering must be sufficient, once every morning, and in the evening to see the dry and wet condition of the potted soil. If it is dry, water should be watered again at noon to avoid the influence of high temperature. It is best to spray water around the flowerpot to cool down.

3. There are some clever ways to apply fertilizer and top dressing.

Sweet-scented osmanthus likes pig manure very much. if pig manure can be obtained, pig manure can be applied once every ten days and a half months, then sweet-scented osmanthus will bloom very luxuriantly and fragrant in August. If there is no pig manure, you can also use mature cake fertilizer, preferably a fertilizer containing more phosphorus and potassium, which can promote the growth and flowering of sweet-scented osmanthus.

4. Proper pruning

Potted sweet-scented osmanthus had better choose short and strong, thick trunk and symmetrical branches and leaves. If you can't meet the requirements, you can cut the pruning short after potting. Generally, pruning can be carried out twice in spring and autumn, and the first pruning should be carried out after flowering in autumn. when pruning, the dense branches should be pruned properly according to the plant growth, so that the stout short branches are evenly left on each side branch, and the long branches are cut off. The second pruning is carried out before germination in early spring, cutting off some withered branches, weak branches, disease and insect branches that pass the winter.

5. Disease and pest control

There are many diseases and insect pests of sweet-scented osmanthus, such as brown spot, withered leaf, anthrax, red spiders, shell insects, and so on. The specific methods of prevention and treatment will no longer be explained by the gardener here. We remember to pay attention to observation and take precautions to find diseases and insect pests and spray them in time.

[tips] potted sweet-scented osmanthus had better choose varieties with strong resistance, and indoor culture should pay attention to ensuring that sweet-scented osmanthus has sufficient light. In addition, change pots for sweet-scented osmanthus should be changed every 1-2 years, preferably in early spring, the new pot should be a little larger than the original pot, and some old and withered roots should be cut off while changing soil, so that sweet-scented osmanthus can grow better in the coming year.

Pruning methods of sweet-scented osmanthus bonsai

1. The pruning of the viewing period refers to the pruning of the sweet-scented osmanthus trees after the bonsai is formed, in order to protect and maintain the beautiful shape of the osmanthus trees. This kind of pruning is long-term. A large number of them must be done well.

2. The trunk and main branch of sweet-scented osmanthus bonsai cultivated with tree stump have been determined after stereotyped and pruned. What needs further processing and pruning are the secondary branches and the finer tertiary branches. The basic points to be mastered in the processing and pruning of these branches are: a branch should have a certain degree of curvature, and each branch should be divided into length and length in order to be beautiful.

3. When pruning, the cluttered cross branches, overlapping branches, parallel branches and opposite branches should be adjusted, that is, one of them should be cut or thinned. For the branches left behind, they can grow stout because of the concentration of nutrients. When the cultured branch grows to a suitable thickness, it is pruned with strength to shorten it. Give birth to the second branch. When the second branch grows to a suitable thickness, it will be cut again. In the future, the second and fourth branches will be treated in the same way. Usually two twigs are left on each branch. The twigs are long and short. After years of pruning, the branches are short, stout, vigorous and powerful, and gradually form the required tree shape.

In which month does sweet-scented osmanthus bloom

1. Cinnamon: the florescence is from September to October, and the color is golden yellow. Yingui: the florescence is from September to October, the color is white or yellowish white. Cinnamon: the florescence is October, the color is orange-red or orange-yellow. Four Seasons Cinnamon: there are a small number of flowers every month, the color is white. In addition, the flowering time of sweet-scented osmanthus varies slightly according to different planting areas. Shanghai, Anhui, Jiangsu and Jiangsu basically opened in October, the northeast in August, Beijing, Tianjin and Hebei in September, and Sichuan, Guangxi and Shaanxi in September.

2. Osmanthus fragrans will not blossom until they are old enough to bloom. Sweet-scented osmanthus has a long life, generally can live for several decades to hundreds of years, and some even live to a thousand years, so its flowering age is relatively late. The seedlings sown take about ten years to blossom, the cuttings take four years to blossom, the grafted cinnamon has 1/5 to blossom the following year, and the grafted cinnamon blossoms in the same year, but very few. Some of the transplanted sweet-scented osmanthus trees can blossom in the same year, while others have to adapt to one or two years before they bloom.

How much is the sweet-scented osmanthus sapling?

1. Variety: the variety of sweet-scented osmanthus seedlings determines the price of sweet-scented osmanthus seedlings. Sweet-scented osmanthus is divided into four major varieties: Golden osmanthus, silver cinnamon, cinnamon and four seasons of osmanthus. Of course, there are many small varieties in each large variety, but the prices of small varieties under large varieties are similar. The price of cinnamon is the highest, with red flowers.

2. Size: sweet-scented osmanthus saplings are also large and small, and the big ones are of course a little more expensive. if small seedlings are now in the industry, they are generally distinguished according to the height of the seedlings (in the past, according to the age of the trees). At present, the most commonly planted seedlings are sweet-scented osmanthus seedlings with a height of about one meter.

3. Origin: the origin of sweet-scented osmanthus seedlings has a great relationship with the price, because the regional relationship first leads to different costs of cultivating sweet-scented osmanthus seedlings in different places, resulting in a little deviation in price. and the cost of seedling distribution and transportation also has a lot to do with the region.

Quantity: the purchase quantity of sweet-scented osmanthus seedlings is also closely related to the price. As we all know, if anything is purchased wholesale, the price will be a little cheaper.