Osmanthus fragrans flowering time
Dandan osmanthus period is September ~1early October, and fruiting period is March of the following year. Dangui is a rare variety among all varieties of Dangui, with red flowers, and the flowering time is mainly in 10, which is a little later than Jingui and Yingui. Cymes are clustered in leaf axils or nearly broom-shaped, and there are many flowers in each axil. Bracts are broadly oval, pedicels are thin, flowers are very fragrant, calyx is about 1 mm long, lobes are slightly irregular, corolla is yellowish white, yellowish, yellow or orange, stamens are inserted in the middle of corolla tube, and filaments are extremely short.
What if osmanthus fragrans doesn't blossom?
1, Place: Dangui belongs to that kind of long-day plant, which likes strong light, so potted Dangui must be placed in the sun as much as possible. If the light is insufficient, the potted osmanthus fragrans can't get the necessary sunshine during the growth and development, which will lead to the excessive growth of leaves, and even cause deciduous leaves, which will affect the differentiation and formation of flower buds.
2. Sufficient nutrients: Although the requirements of soil for potted plants in Dangui are not strict, it is better to use slightly acidic soil, which can be made from mountain mud or humus soil, garden soil and river sand. Fertilization: Generally, a quick-acting fertilizer with nitrogen as the main ingredient is applied once in spring when buds sprout and new leaves appear, and a fertilizer with phosphorus and potassium as the main ingredient is applied once before flowering in July. Change the pots and soil once every one and a half years, and apply a proper amount of cake fertilizer when changing pots. Only in this way can the pots and soil not harden, so that their roots can spread freely, and the flowering will not be affected by insufficient nutrients.
3. Proper watering: osmanthus fragrans has a high demand for water, and it is the most taboo to accumulate water. During the growing season, watering should be dry and wet, and the humidity of the basin soil should be 50%. If it is watered too much or accumulated water in the basin for a long time, it will lead to rotten roots and fallen leaves, which will inevitably affect normal flowering. Under normal circumstances, osmanthus fragrans transplanted into the new pot soil should be watered once, and it can be watered normally after waiting for about 10 days until the plants resume growth and send out new leaves. Water should be less before the new shoots occur and on cloudy days, and more water is needed in summer and autumn when the weather is dry.
4. Avoid smoke and dust: osmanthus fragrans is the most taboo plant, especially sensitive to soot and oil and gas discharged from the kitchen. If the growing osmanthus is polluted by the above air, it will grow poorly, and the leaves will become smaller and fall off easily, resulting in little or no flowering.
5. Shaping and pruning: osmanthus fragrans has the characteristics of developed root system and strong germination. Generally, adult osmanthus fragrans shoots twice a year in spring and autumn and rainy season, so it is necessary to maintain the physiological balance between reproductive growth and vegetative growth of its plants and prune them in time. Pruning should be carried out after flowering in autumn or before germination in spring, and the dense branches, overgrown branches, residual branches and pest branches should be cut off. Cut off the budding branches during the growth period, so as to concentrate nutrients and bloom luxuriantly.
Cultivation method of potted osmanthus fragrans
Reasonable watering
The soil in the basin of Dangui should master the principle of not watering it, but watering it thoroughly. However, it is necessary to spray clear water on the leaves once a day and evenly wet all the branches and leaves, so as to start dripping water, so as to keep the leaves moist and clean the dust adsorbed on the leaves. After Tomb-Sweeping Day, Dangui was moved to the open air and watered once. Water must be done 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 be suddenly quenched and heated, and be careful not to accumulate water. Keep the basin soil moist in winter.
Timely fertilization
When osmanthus fragrans shoots, nitrogen fertilizer can be applied1~ 2 times to promote the growth of branches and leaves, while phosphorus fertilizer is mainly applied before flower bud differentiation and flowering. After Dangui was moved to the open air in spring, the rotten and thin bean cake, sesame sauce, fishy water, etc. were poured once every half month, once a week from the end of May to before flowering, and the concentration of fertilizer and water gradually increased, and the 0.5% potassium dihydrogen phosphate solution was topdressing every half month from July to August. After flowering, apply a light fertilizer solution to avoid causing autumn branches. In winter, more organic fertilizers and phosphorus and potassium fertilizers should be applied. Before fertilization, the soil in the basin should be slightly dry, and the soil should be loosened first to facilitate the absorption of fertilizer, and water should be poured once the next day.
Choose basin and pour basin.
The quality of Dangui flowerpot is better with purple clay pot or glazed clay pot, and the color is better with purple or ochre, which can be in sharp contrast with the color of flowers and leaves to increase its ornamental effect. Potted osmanthus fragrans should be changed every 2 ~ 3 years, some old roots and withered roots should be cut off, and some old soil should be removed with bamboo sticks. The proportion of soil used for potted osmanthus fragrans is not strict, and it can usually be made up of garden soil, compost and river sand, each accounting for 1/3. After planting in spring, it should be watered enough to be permeable, and then moved to the shade for about 10 days to make it? Take a basin? You can't apply fertilizer during the pot service, and you can water and apply fertilizer only after you resume growth and grow new leaves.
Plastic pruning
It is better to make the shape of Dangui into curved dry type, inclined dry type or elegant type, and the plastic surgery generally adopts the method of combining climbing and pruning, and the trunk can be climbed into curved dry type or inclined dry type. It should be carried out after autumn. For plants with high growth but empty lower branches and poor tree shape, the whole top branches can be cut off at 2/3 or 3/4, right? Top-heavy? For some plants, the upper branches should be cut off, leaving only a few smaller branches, and for plants with too dense branches, thinning should be carried out. After flowering, pruning should also be carried out once to cut off the long branches, dead branches, disease and insect branches and dense and thin branches.
Overwintering management
Room temperature should be kept at 0 ~ 5℃ and relative humidity at 50 ~ 80%. In winter, the indoor light is better, especially before the buds begin to sprout in early spring, which requires more sunshine. In the spring of the following year, after Grain Rain in North China (before and after the fright), potted osmanthus leaves the room. After leaving the room, put it in the outdoor leeward and sunny place first, and then put it in rows in order to gradually adapt to the external environment.
Pest control
The common diseases in Dangui are leaf spot, sooty blotch, algae spot, root rot and iron deficiency, which should be controlled according to the disease situation. Leaf spot, sooty blotch and algae spot can be controlled by spraying 0.5 Bordeaux solution or 5% carbendazim 500 ~1000 times solution. The prevention and control of root rot should pay attention to keeping the soil loose and breathable, and do not accumulate water. For example, when root rot is caused by fungi, the roots can be watered with 200 ~ 300 times solution of amobam. The common pests in Dangui are sawfly, whitefly, mite, white scale, yellow thorn moth and so on. Sawflies, whiteflies and mites can be sprayed with 40% dimethoate1500 ~ 3000 times solution, except for the artificial brush. In the first and second generation nymphs, 40% dimethoate 1000 times solution or 40% chlorpyrifos 500 times solution can be sprayed.
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