The reason for the yellowing of Gardenia leaves

1. Improper moisture

If the water is not enough at ordinary times, it is possible to make it produce yellow leaves. In addition, watering should not be too much in the process of planting. Stagnant water or soil in the basin is too wet, which will cause young leaves to be dim, grow slowly, and old leaves show yellowish green and wither gradually.

2. Improper lighting

Too much or too little light will cause the leaves of the plant to turn yellow. If the strong light is direct for a long time, there will be macula on the leaf surface, but if it is placed in a shady environment for a long time, the leaves will fall off because they do not get enough sunlight, so they should replenish the light in time.

3. The temperature is too low

Gardenia jasminoides can tolerate low temperature, but too low temperature will cause leaf yellowing. In the process of gardenia maintenance, it is easy to frostbite in winter, and it is easy to frostbite plants if warm measures are not taken in early spring and early winter night.

The reason for the yellowing of Gardenia jasminoides leaves

Large-leaf gardenia is generally cultivated in the north, which is often caused by yellowing or even death of the whole plant due to climate, soil and other conditions in the north. Today, I would like to introduce the reasons for the yellowing of the leaves of Gardenia jasminoides.

The reason why the leaves of Gardenia jasminoides turn yellow:

The main results are as follows: (1) Gardenia likes acidic soil, while most of the soils in the north are neutral or alkaline, which leads to the lack of iron that can be used by plants, which is one of the main reasons for the yellowing of leaves. To this end, the cultivation of Gardenia jasminoides should choose fertile acid culture soil. Generally, it can be mixed with 4 parts of rotten leaf soil, 4 parts of garden soil and 2 parts of sandy soil. Then per kilogram of soil mixed with 1 kilogram of sulfur powder. Rain Water or fermented rice panning water is suitable for watering gardenia. During the growth period, 0.2% ferrous sulfate is watered every 10-15 days or alum fertilizer water is applied every 10-15 days (the two can be carried out alternately). This can not only prevent the soil from becoming alkaline, but also replenish iron to the soil in time, thus preventing the leaves from turning yellow.

(2) Gardenia likes to be moist. In addition to keeping the basin soil moist at ordinary times, we must also pay attention to increasing air humidity. This is because the climate of the north is different from that of the south. The north is dry in spring, often blows dry winds, strong light intensity in summer, hot weather, and cold and dry winter. Because of

Therefore, in spring and summer, foliage should be sprayed with clear water every morning and evening and water should be sprayed to the nearby ground to increase air humidity. Watering should be less in winter, but branches and leaves still need to be sprayed and washed frequently to keep the leaves clean.

(3) Gardenia likes light, but is afraid of strong light exposure. If exposed to the sun, the leaves turn yellow and whiten until they fall off. Therefore, the summer must be placed under the shade or in a place with scattered light, so that it can see some sunlight in the morning and evening, so as to prevent the leaves from turning yellow.

(4) Gardenia jasminoides is not cold-resistant, so it is necessary to pay attention to the room and out of the room. It is generally in the middle of October to put it in the sunny place, and the room temperature should be kept at 10 ℃-12 ℃. It is not advisable to leave the room too early in the next spring, usually in late April.

The reason why the leaves of Gardenia jasminoides turn yellow is introduced here. If we can achieve the above four points, gardenia can not only settle down in the north, but also have green leaves and flowers with strong fragrance.

Gardenia jasminoides Ellis, also known as Gardenia jasminoides, Gardenia jasminoides, are evergreen shrubs of Rubiaceae, Rubiaceae, Gardenia jasminoides, like warm, humid and sunny environment, more hardy, resistant to semi-overcast, afraid of stagnant water, require loose, fertile and acidic sandy loam, native to China. Gardenia has luxuriant branches and leaves, evergreen leaves and fragrant flowers. It is an important garden ornamental plant. Causes of yellowing of leaves 1. Chlorosis 1. When iron deficiency occurs, the veins of young leaves lose green and yellowing, which seriously yellowes the whole leaf, and even causes scorched leaves and branches to wither, resulting in plant death. For this situation, 0.2%-0.5% ferrous sulfate solution can be sprayed for prevention and treatment. 2. the chlorosis caused by magnesium deficiency gradually develops from the old leaves to the new leaves, and the veins are still green, and when the leaves are serious, the leaves fall off and die. For this situation, 0.7% Mel 0.8% boron and magnesium fertilizer can be sprayed to prevent and control. 3. Nitrogen deficiency is characterized by simple yellow leaves and small and brittle new leaves. 4. the performance of potassium deficiency is that the old leaves change from green to brown. 5. the performance of phosphorus deficiency is that the old leaves are purplish red or dark red. Second, water yellow 1, this kind of situation occurs most often, generally it is the old leaf yellow caused by the new flood. The newly purchased gardenia has yellow leaves at the bottom, the veins are still green and the edges are yellowing, many of which are caused by a change of environment. Remove the yellow leaves and wait for the new leaves to grow. 2. The water is not dry due to the discomfort of the basin soil. Soil replacement can be carried out. Third, fat yellow refers to the yellow leaves caused by excessive or excessive concentration of fertilizer applied by flower friends. the general symptoms are as follows: the veins of the leaves turn green and turn yellow, while the periphery is still green. There is a sudden loss of green, dry and yellow leaves after fertilization, which are all caused by hypertrophy and thickening. There are only two ways to deal with fat yellow so far: flood irrigation and de-pot root washing. Fourth, the situation of drought and yellow is relatively rare, which is generally caused by inattention to management. After discovery, you can slowly resume watering and keep the basin soil moist.