Causes and solutions of black flower buds and root damage in osmanthus fragrans
If the new buds of osmanthus fragrans appear black and fall off, we should first check whether there is any problem with the roots of the plants. In particular, soil hardening and soil alkalization occur. Or root rot caused by excessive watering will lead to the phenomenon that the new buds of osmanthus fragrans appear black and fall off.
solution
After the black buds of osmanthus fragrans appear to fall off, it is first necessary to check whether the root system of osmanthus fragrans is damaged. In addition, it is necessary to observe whether the soil is alkaline, because osmanthus likes slightly acidic soil. If the soil is alkaline, it will affect the growth of osmanthus fragrans. In addition, excessive watering will harden the soil in the basin, which will cause water accumulation and root rot. At this time, it is necessary to check whether the root system of osmanthus fragrans is rotten. If the roots don't rot, but turn brown, then we can water and disinfect the plants with carbendazim.
Improper watering
Osmanthus fragrans is a relatively drought-tolerant tree species. If you water too much at ordinary times, it will cause water in the basin, which will not only lead to the inability of osmanthus trees to breathe, but also lead to root rot, which will lead to the withering and blackening of osmanthus buds. In severe cases, it may even lead to the death of plants. In addition, if there is too little water and plants can't absorb enough water for the leaves, then the leaves will turn yellow, wither and even die.
solution
In the maintenance process of osmanthus trees, if the new buds appear black and withered due to excessive watering, we need to replace the soil in time and then put the plants in a sunny place for maintenance. If the roots of plants can't absorb enough water because of too little watering, then we just need to master the correct watering method. Generally, water needs to be watered once or twice a week in spring and autumn. In summer, the weather is hot and the evaporation becomes larger. At this time, you can increase the frequency of watering once a day. Water must be reduced in winter, preferably once every ten days. I just need to make sure the soil is slightly wet.
Overfertilization
Another reason why osmanthus buds appear black and withered may be because of fertilization. Excessive fertilization will not only affect the absorption of osmanthus trees, but also cause the leaves of osmanthus trees to turn black, yellow and fall off. In severe cases, it may even cause plants to wither and die. But fertilization is necessary, because long-term non-fertilization may cause plant malnutrition, affecting the ornamental value of leaves and the amount of flowers in flowering period.
solution
In the process of maintaining osmanthus fragrans, if the new buds of osmanthus fragrans appear black and withered due to excessive fertilization, we need to water the roots of the plants at this time. It is used to dilute the fertility in the soil, and then the plants are maintained in sunny places. Osmanthus fragrans does not have a high demand for fertilizer. Generally, it is best to apply decomposed cake fertilizer once every half month in spring and summer, and basically no fertilization is needed in autumn and winter.
Eliminate pests and diseases
Osmanthus fragrans, like other flowers, is easily infected with diseases and insect pests if it is placed in a poorly ventilated environment for a long time. After being infected with diseases and insect pests, the leaves will dry up, turn black and wither. Common diseases and insect pests of osmanthus fragrans include leaf spot, sooty blotch, yellow disease, red spider, aphid and so on. The occurrence of pests and diseases will affect the photosynthesis of osmanthus trees, and the excreta secreted by red spiders and aphids will also induce other diseases, which will make osmanthus trees wither and turn black, and even the whole plant die.
solution
After the disease of osmanthus fragrans occurs, we need to remove the diseased leaves in time, which can effectively block the source of the pathogen. In addition, the fallen leaves must be cleaned in autumn to ensure good ventilation and light transmission. If the ventilation is poor and the humidity of leaves increases, pests and diseases will easily occur. Therefore, in the process of maintaining osmanthus fragrans, once the branches and leaves of osmanthus fragrans trees are found to be abnormal, we need to move osmanthus fragrans to a sunny and ventilated place for maintenance in time, and then spray 0.5% ferrous sulfate solution, or dilute 50% polysulfide suspension with water for 800 times before spraying. In addition, we can also spray 50% carbendazim wettable powder with 1000 times of water.
Summary: If the bud tip withers and turns black after the osmanthus fragrans germinates, it is mainly caused by improper maintenance, which is related to the four points in this paper. As long as it caters to the habits of osmanthus fragrans, it can make osmanthus fragrans grow strong.