Flowering time of osmanthus fragrans
The osmanthus period of Dandan is from September of 10 to early October of 10, and the fruiting period is March of the following year. Dangui is a rare variety among all varieties of Dangui, with red flowers. The flowering time is mainly in 10, which is a little later than Jingui and Yin Gui. Cymes are clustered in leaf axils or nearly broom-shaped, with many flowers in each axil. Bracts are broadly ovate, pedicels are thin, and flowers are very fragrant. Calyx is about 1 mm long, lobes are slightly irregular, corolla is yellowish white, light yellow, yellow or orange, stamens are inserted in the middle of corolla tube, and filaments are extremely short.
What if osmanthus doesn't bloom?
1. location: osmanthus fragrans belongs to a diurnal plant and likes strong light, so potted osmanthus fragrans must be placed in the sun as much as possible. If the light is insufficient, potted osmanthus fragrans can't get the necessary sunshine in the process of growth and development, which will lead to the rapid growth of leaves and even defoliation, which will affect the differentiation and formation of flower buds.
2. Adequate nutrients: Although the requirements for soil in potted osmanthus are not strict, it is better to use slightly acidic soil, which can be made of mountain mud or humus soil, garden soil, river sand, etc. Fertilization: Generally, quick-acting nitrogen fertilizer is applied once when new buds sprout and new leaves appear in spring, and phosphorus and potassium fertilizer is applied once before flowering in July. Change pots and soil once a year and a half, and apply appropriate cake fertilizer when changing pots. Only in this way, the flowerpot and soil will not harden, their roots will spread freely, and flowering will not be affected by lack of nutrients.
3. Proper watering: Osmanthus fragrans has a great demand for water, and it is the most taboo to accumulate water. During the growing period, watering should be dry and wet alternately, and the humidity of basin soil should be 50%. If you water too much or accumulate water in the basin for too long, 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 will take about 10 days before it can be watered normally until the plant resumes growth and grows new leaves. Water less before new shoots appear and on cloudy days, and water more in dry summer and autumn.
4. Avoid smoke and dust: Osmanthus fragrans is the most taboo plant, and it is particularly sensitive to the fumes and oil and gas discharged from the kitchen. If the growing osmanthus is polluted by the above air, it will grow poorly, its leaves will become smaller and fall off easily, resulting in little or no flowering.
5. Pruning: Osmanthus fragrans has the characteristics of developed root system and strong germination. Adult Osmanthus fragrans is usually pruned twice a year in spring and autumn and rainy season, so as to keep the physiological balance between reproductive growth and vegetative growth. Pruning should be carried out after flowering in autumn or before germination in spring, and dense branches, clustered branches, residual branches and pest branches should be cut off. During the growth period, cut off the budding branches, concentrate nutrition, and flourish.
Cultivation method of potted osmanthus fragrans
Reasonable watering
The soil in Dangui basin should be well watered and thoroughly watered. However, it is necessary to spray clear water on the leaves once a day and moisten all the branches and leaves evenly before dripping, so as to keep the leaves moist and clean the dust adsorbed on them. 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 to avoid sudden quenching and heating, and be careful not to accumulate water. Keep the basin moist in winter.
Timely fertilization
When osmanthus fragrans shoots, nitrogen fertilizer 1 ~ 2 times can be applied to promote the growth of branches and leaves, and phosphorus fertilizer is mainly applied before flower bud differentiation and flowering. After Dangui was moved to the open air in spring, rotten and thin bean cakes, sesame sauce, fishy water and so on. Once every half a month, once a week from the end of May to before flowering, the concentration of fertilizer and water gradually increases, and 0.5% potassium dihydrogen phosphate solution is topdressing every half a month from July to August. Apply light fertilizer solution after flowering to avoid autumn branches. Apply more organic fertilizer and phosphorus and potassium fertilizer in winter. Before fertilization, the soil in the basin is slightly dry, loosen the soil first to facilitate fertilizer absorption, and water it once the next day.
Choose a basin and pour it.
The quality of osmanthus flower pots is better with purple or ochre, which can be in sharp contrast with the colors of flowers and leaves to increase their ornamental effect. Potted osmanthus is changed every 2 ~ 3 years, some old roots and withered roots are cut off, and some old soil is removed with bamboo sticks. The proportion of soil used for potted osmanthus fragrans is not strict, and it can usually be composed of garden soil, compost and river sand, each accounting for 1/3. After planting in spring, you should pour enough water to make it permeable, and then move it to the shade for about 10 days. Get a basin? Fertilization can't be carried out during potted plants, and watering and fertilization can only be carried out after the growth resumes and new leaves grow.
Plastic trimming
The shape of osmanthus fragrans is best made into curved dry type, inclined dry type or elegant type, and the plastic surgery generally adopts the method of climbing and pruning, and the trunk can be climbed into curved dry type or inclined dry type. It should be done after autumn. For plants with high growth but hollow 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. For plants with too dense branches, thinning should be carried out. After flowering, a pruning should also be carried out to cut off long branches, dead branches, disease and insect branches and sparse branches.
Overwintering management
Room temperature should be kept at 0 ~ 5℃ and relative humidity at 50 ~ 80%. Indoor light is better in winter, especially in early spring before the buds begin to sprout, so more sunshine is needed. The following spring, 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, and then put it in rows to gradually adapt to the external environment.
control of insect
The common diseases in Dangui are leaf spot, sooty blotch, algae spot, root rot and iron deficiency, 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. The prevention and control of root rot should pay attention to keep the soil loose and breathable, and do not accumulate water. If root rot is caused by fungi, mancozeb 200 ~ 300 times solution can be used to water the roots. 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% 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.
Guess you like:
1. How can osmanthus grow well?
2. When is the flowering period of osmanthus fragrans?
3. How can the seeds of osmanthus be planted successfully?
4. The reason why osmanthus fragrans don't bloom in northern China.
5. What are the transplanting methods for planting osmanthus?