How do Jasmine leaves turn yellow and fall off

There are generally three reasons for the yellowing of jasmine leaves:

1. Improper watering

When watering too much, the air permeability of jasmine root is not good, and the young leaves will be dull, yellow and wither gradually, and the old leaves will change little; When watering is too little, the water absorption is not enough, and the old leaves will gradually fall off from top to bottom

Solution: the number of watering times should be determined according to the dry and wet conditions of the basin soil and the weather, so as to ensure that the basin soil is damp but not wet. After being exposed to the rain, the accumulated water should be poured out in time to prevent rotten roots

2. Improper fertilization

When the jasmine is hypertrophy, the new leaves turn brown, and the old leaves gradually wither and fall off; When lack of fertilizer, the leaves are not nutritious enough, they will turn yellow

Solution: change pots and soil in time when it is hypertrophic, and topdressing in time when it is lack of fertilizer. Fertilization shall follow the principle of thin fertilizer and frequent application

3. Alkaline soil

Jasmine likes a sour growth environment. If the basin soil of Huayou in the north is alkaline, it will also cause yellow leaves and fallen leaves

Solution: adjust the acidity and alkalinity of the soil. You can dilute the vinegar 1000 times with water and irrigate the soil. You can also mix the fruit peel and core with water for composting and then water the flowers

What if Jasmine drops its bud

There are generally two reasons for jasmine flower bud and bud falling:

1. Adapt to the new environment

The newly bought jasmine flower needs to consume a lot of nutrients to adapt to the new environment. At this time, we can only sacrifice the bud to save nutrients

Solution: pinch off the flower buds, trim some strong branches and leaves, and then put them in a cool and ventilated place for a week before normal maintenance

2. Insufficient light

Jasmine likes light and needs sufficient light during its growth. Insufficient light will lead to excessive growth of branches and leaves, either falling buds before flowering, or less and small flowering

Solution: first trim the bare branches and leaves, and then put the flowerpot on the sunny nanyangtai or windowsill for maintenance, as long as it is not exposed to strong light

What about the rotten roots of Jasmine

1. Pruning rotten roots

After the rotten roots are found, take the jasmine out of the flower pot, gently shake off the soil, rinse it with clean water, and then cut off the rotten roots

2. Sterilization and disinfection

Place the trimmed roots in potassium permanganate or carbendazim solution, soak them for 2 ~ 3 hours, and then dry them in a ventilated and cool place

3. Pot change transplanting

Place a layer of gravel and cinder on the bottom of the prepared flowerpot, and then fill the soil for transplanting. The soil can be mixed with loose rotten leaf soil and muddy sandy soil

How to raise Jasmine in summer

Watering

when the air temperature is high, jasmine water evaporates quickly. Every morning and evening, every time the water is poured, keep the basin soil moist but not water accumulated. If the air is dry, spray water frequently. p>

Illumination

If Jasmine wants to blossom more, it must ensure sufficient light. As long as it is not exposed to strong light at noon, the more light at other times, the better it blooms

Fertilization

Summer is the peak flowering period of jasmine. In order to ensure flowering, we should apply rotten cake fertilizer water or compound fertilizer every other week. Only when there is enough fertilizer and water can we bloom more and larger. Pay attention to that the basin soil is not dry and cannot be fertilized

Pruning

Jasmine grows fast in summer. It is necessary to trim the dense tangled branches in time. When trimming, keep the bottom 10 ~ 15cm to promote the germination of new branches. Cut the flower branches in time after the flower withers to reduce the nutrient consumption and ensure the next flowering

Pest control

1. Starscream

If the ventilation is not good in summer, jasmine is most likely to produce red spiders. Red spiders will harm the young leaves at the top, and the leaves will appear yellow patches. In serious cases, they will wither and fall off

Solution: in case of infection, first cut off the diseased leaves, remove the dead branches and leaves, and then spray the medicine. Pay attention to two points during spraying:

1. Red spider has strong reproductive ability and is prone to drug resistance. It must be used in turn. The optional drugs include 25% triazole tin wettable powder 1000 ~ 2000 times, 20% dicofol 1000 ~ 1500 times, 5% carboxam EC 500 ~ 1000 times, etc

2. To eliminate Starscream, it is best not to use dichlorvos and dimethoate. The smell of these two pesticides is too strong to disperse for many days. They are not good for human body, and they are not specific drugs

2. Anthrax

Anthrax usually occurs on leaves. At first, it is a small yellow green spot, which gradually expands into gray white or gray brown round spots

Solution:

When infection is found, remove the diseased leaves first, and then spray 70% of Loctite 600 ~ 800 times, once every 7 ~ 10 days for 3 consecutive times

If the disease spot is serious, you need to spray 50% methyltobuzin, 75% chlorothalonil wettable powder 800 ~ 1000 times or 50% carbendazim 1000 times

3. White silk disease

White silk disease is the most serious disease of jasmine. It mainly occurs at the stem base close to the ground. White hyphae are produced on the surface and gradually rot at the bottom. If it is serious, the whole plant will die

Solution:

In the early stage of disease, spray 1000 times of 50% ammonium metasen solution around the disease and soil every 7 ~ 10 days to inhibit the spread of the disease

When the disease is serious, it must be uprooted, the diseased plants must be removed, destroyed in a centralized manner, and disinfected with 800 ~ 1200 times of 86.2% copper and 500 times of 50% ammonium metasen or lime powder

Flower friends, have you learned

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