If the potted flowers are poorly managed, the leaves will turn yellow, dry and curled. The situation of leaf changes can be used as a basis for analyzing problems in conservation work and take corresponding measures accordingly. The young leaves turn yellow, or the lower leaves curl and wither, and constantly dropping leaves is usually caused by too much watering. Potted flowers should be "see dry see wet", if there is water in the pot, the time can not exceed half an hour, otherwise the root health will be affected. Sometimes, the young leaves of potted plants turn yellow because they lack some kind of nutrients. Although the leaves turn yellow but veins are still green, it is caused by iron deficiency. At this time, some ferrous sulfate can be applied. With 3 parts of silty earth plus 1 part of commercially available decomposed nitrogen and phosphorus fertilizer, the effect is also available. The old leaves turn yellow, and the new leaves grow very small. This is the lack of nitrogen or phosphorus, potassium nutrition in the basin soil. Appropriate organic fertilizer or commercially available fertilizer tablets can be used to supplement nutrients. The young leaves of the leaves should be inspected to see if the basin soil is too dry or if the light is too strong and the temperature is too high to burn the plants. The tip of the new shoot is atrophic, young leaves are yellowish, and the old leaves are dark yellow. This is mostly due to the lack of oxygen in the basin soil water and root rot. The soil should be immediately stopped and the water must be controlled. If the top of the new leaf color is normal, the lower leaves gradually dry up and fall off yellow or dry coke, it is lack of water. Foliage is often caused by too much fertilization and improper watering. The potted earth can be washed with fresh water several times, so that the fertilizer dissolved in the water flows out through the drain hole. Curl wrinkles and browns on the edge of leaves are mostly caused by excessive drying of indoor air, and should be sprayed on the leaves with water that is similar to the room temperature; or by placing pots in another large basin. Wet grass ash or wet rags were placed between the two basins to create a moister microclimate around the pots.
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