There are many reasons for the yellowing of potted poppy leaves. First, the young leaves at the top of the flower turn yellow, the old leaves turn yellow gradually, and the new buds shrink. This is caused by long-term rain or excessive watering, too wet in the basin, lack of oxygen in the soil and root rot. Always loosen the soil, control watering and avoid heavy rain spraying. Second, the color of the leaves above the dry land is normal, and the leaves below gradually dry up and fall off. This is because the soil is too full or not watered for a long time, which leads to the aging of the lower leaves and branches, so it is necessary to water it properly to keep the soil moist. Third, the leaves of flowers lacking fertilizer are thin and yellow. This is because the flowers in the big pot are small or haven't been changed for a long time, and there is not enough soil. It is necessary to gradually increase water and fertilizer and change pots in time. Fourth, the leaves of the fertilizer-damaged flowers are uneven and not stretched, the new leaves are thick, and the old leaves turn yellow. Qin Ying watered them, suspended fertilization, sprinkled some seeds in the pot, and pulled them out after emergence, so as to consume the fertilizer in the pot and restore the normal growth of flowers and trees. 5. Alkaline, flowers and trees that love acidic soil, the leaves gradually turn yellow, which is caused by alkaline soil. You can soak the grass in water and apply some ferrous sulfate, and the leaves will turn green. Sixth, the light is not suitable. Potted flowers are often placed indoors, and flowers tend to have yellow leaves. People who like sunshine will turn yellow if the light is insufficient. Some flowers that like cool environment will turn yellow and fall off if they encounter high temperature.