Performance: suddenly falling leaves. Leaves wilt without fading, and fall off suddenly, often because of the sudden attack on plants, such as the sudden rise and fall of temperature, the rapid increase of sunshine intensity in the daytime, or the attack of strong cold wind, in addition to the excessive drying of soil, plants will also fall leaves to reduce leaf transpiration.
Method: usually pay attention to the weather cooling and other conditions to prevent the plants from being impacted. Move the plant to the environment suitable for its growth, pay attention to temperature, light, water, air humidity, etc., non dormant plants will grow new leaves after a period of time.
Source: Bonsai Art Online
Method: just change the basin, the newly purchased plants or plants are moved from one room to another room with slightly changed environment. It is normal to lose 1-2 leaves. Pay attention to the use of a slightly larger basin when changing the basin, when buying plants to take home, be careful to protect the plants gradually from the shade to the bright place, so as to reduce the stimulation to the plants.
There are three possible causes, lack of light, high temperature or water shortage.
Method: the right medicine, see light, water, cooling
(source: Baidu knows)
Performance: no obvious change in the old leaves, yellow in the young leaves. It's caused by over watering.
Method: control water immediately. Seriously put the flower out of the basin in a cool and ventilated place, blow dry the soil and then put it back in the basin.
(author: wulm007 source: Gardenia bar)
Performance: the tip or edge of the leaf withers and dries, the old leaves wither and fall off from bottom to top, but the new leaves grow normally. If the water shortage is a little longer, the whole plant will be yellow leaves, or even die. Caused by water shortage and drought
Method: water in time, pay attention to pour enough, pour thoroughly.
(author: wulm007 source: Gardenia bar)
Performance: the young leaves are thick, glossy and uneven, and the old leaves are scorched yellow and fall off. This is due to excessive fertilization or high concentration or application of immature and fermented organic fertilizer.
Method: immediately move the plant from the sun to the shade, first spray water on the plant to keep the branches and leaves from wilting; then pour large amount of water into the basin, so as to wash the fertilizer out of the basin.
If the fertilizer damage is serious, you need to wash the roots and change the soil:
(1) gently pull out the plant from the basin (or ground) and soak the root in water for 2-3 hours to thoroughly wash the fertilizer solution of the root.
(author: Yami Chaoyang source: Northern Camellia potted bar)
(2) cut off most of the leaves and branches, and cut more plants that are resistant to pruning and less plants that are not resistant to construction, so as to reduce the burden of plant nutrition supply. If there are rotten roots, cut the rotten roots and wash the roots with potassium permanganate or carbendazim to sterilize them.
(3) plant the plant with sterilized plain sand, cover it with plastic bag to reduce water evaporation, then place it in the shade for maintenance, and open the plastic bag for 1-2 hours every day to prevent mildew. When new vitality appears on the branches and buds grow well, the plastic can be removed and transferred to normal management.
Performance: the young leaves and young stems are yellow first, and the old leaves are normal or gradually turn from green to yellow. This is hungry yellow, is insufficient fertilizer, fertilization concentration is low, and fertilization interval time is too long.
Method: after seeing this phenomenon, apply fertilizer in time, but for the flowers that lack of fertilizer, do not apply a large amount of concentrated fertilizer at one time, so as to avoid burning roots. To often check basin soil if there is a dry phenomenon should be replaced, usually thin fertilizer frequently applied and timely poured some alum water iron.
(author: Wang de no source: Baidu knows)
Performance: the yellow leaves of woody flowers in greenhouse are characterized by obvious young leaves, light old leaves, yellow mesophyll, green vein and typical network.
Method: can use ferrous sulfate solution to solve, according to cake fertilizer 7 parts, ferrous sulfate 5 parts, water 200 parts of the proportion of the solution.
Performance: long time in the shade environment, the leaves can not get enough sunlight, can not form chlorophyll, the whole leaves turn yellow and then fall off.
Method: supplement light can avoid this disease.
Performance: the flower's leaf tip and edge are withered, and the sunrise part of the leaf appears yellow spot, which is burning yellow. Direct sunlight to some shade loving flowers (such as Chlorophytum, Hosta, etc.) is easy to cause
Method: move to the shade.
If the lack of fertilizer, light, water and nutrition can not keep up with the lack of what to make up for, appropriate application of nitrogen fertilizer is conducive to growth. It may also be that the culture container is too small. It's time to change the basin
Performance: the longer and smaller the blade, the thinner the thickness and the lighter the color.
Method: it may be that the soil nutrients are not enough. It is necessary to change basin and soil to supplement soil nutrients. At ordinary times, it can be put in the room to promote photosynthesis and make nutrients to provide growth.
(author: eno19841017 source: Rose Flower bar)
If it is a temporary water loss phenomenon caused by sun exposure, move into the room, water and spray water on the leaves.
If you feel the leaves are not cool, on the contrary, you feel warm and dry. It is possible that the plant has been burnt and rotten. Should dig out to check root system condition, cut rotten root, disinfect, then replant..
Robust leaves are full of dust, but also lack of vitality, pay attention to cleaning.
Improper maintenance environment, too strong sunlight, lack of water, water shortage of leaves will make some cells dry and dehydrate, green gradually fade, and then there will be scorched edge.
It is necessary to cut off the scorched leaves in time and spray water around the leaves to increase the air humidity.
First, the winter temperature, soil temperature is low, watering too much, often resulting in root rot, causing curling.
Second, too much or too little fertilizer, too much fertilizer causes burning roots, the ground part appears scorched edge.
The third is the curling caused by too high temperature (direct air-conditioning blowing, etc.) or too low temperature.
Fourth, curling caused by leaf blight can be controlled by spraying 75% chlorothalonil 800 times.
If the leaf spots or plaques are wrinkled and brown, it may be caused by water shortage.
If the spots soften and are dark brown, it may be caused by supercooling, splashing water on the leaves, chemical damage, sunburn or disease. After watering, pay attention to dry the leaves, water the water suitable for the indoor temperature, and treat the disease in time.
If the spots are wet and blister like or dry and concave, it is caused by the disease. There are several pests that can stab and suck the leaves of plants.
The leaves of flower and Leaf Varieties turn green, which may be due to too little light and too much nitrogen application.
Method: move the plant to the place with strong light, remove the branches with green leaves, and reduce the application amount of nitrogen fertilizer.
If only the tip turns brown, it may be caused by hot air, or it may be bruised. If the tip leans against the wall or the window, it can also turn brown.
There are many reasons for the yellow or brown edge of leaves: too much water, lack of water, insufficient light, too strong light, too high or too low temperature, too much fertilization, too low air humidity or too strong ventilation. To determine the cause, other factors and symptoms have to be considered.
The causes of leaf lesions may be single or multiple.
We should find out the cause of the disease and then rescue
So as not to accelerate the death of plants
