How to maintain the yellowing of green apple leaves

I. introduction of green pineapple

Green pineapple is a perennial evergreen vine, its vine is more than 10 meters long, its character is slightly woody epiphytic vine, with aerial roots, stem internodes with grooves, leaves will grow larger and larger, leaves ovoid, evergreen, leaf surface bright, light green, mosaic varieties with irregular spots and stripes such as golden yellow, white, gray green and so on. It has the laudatory name of "beautiful leaf shape and elegant plant shape", and has become one of the evergreen flowers planted in the family. Green pineapple can not only purify the air, but also make full use of space, adding lively lines and bright colors to the rigid cabinets. In recent years, green pineapple has become a good product of indoor decorative foliage plants.

Green pineapple is a tropical foliage plant that likes a warm environment. The most suitable growth temperature is 20-28 ℃ during the day and 15-18 ℃ at night. When the winter temperature is less than 10 ℃, the stem and leaves grow slowly and the leaves droop and wither. If it is 5 ℃ lower, the leaves will be frozen. When the summer temperature exceeds 30 ℃, the growth stagnates, and the continuous high temperature of more than 35 ℃ can also cause damage.

The original growth place of green pineapple is in the tropical rain forest sheltered by towering trees, belonging to negative plants, which avoid direct sunlight, like scattered light, and are more shade-tolerant. Indoor cultivation can be placed by the window, but to avoid direct sunlight. Too strong sunlight will burn the leaves of green pineapple, overshade will make the beautiful markings on the leaves disappear, too dark, when the temperature is lower than 10 ℃, it will also lead to yellow leaves and fallen leaves, affecting the growth and ornamental of the plant.

Second, the yellow leaves of green pineapple are caused by the following reasons:

(l) Green pineapples bought in winter are generally frozen, so yellow leaves will appear soon when they are put indoors, and new leaves will be reissued during the Spring Festival after these frozen yellow leaves have fallen.

(2) generally, newly bought green apples have an adaptation period of about one month to the new environment, and the bottom yellow leaves are normal, but remember: yellow leaves or dead leaves should not be directly peeled off, but should be cut off from the middle of the petiole. in this way, it can avoid direct stripping to cause too much water loss and increase the wound, resulting in the upper leaves will still turn yellow.

(3) although green pineapple is not afraid of darkness, a very dark environment can also cause yellow leaves, which can be moved regularly to places with good light; at the same time, it can not be exposed to the sun, too much exposure in strong light will not only cause yellow leaves to fall, but also lead to the death of the whole plant.

(4) when the basin soil is too dry or too wet, both of them will cause metabolic disorder, damage to root system and lead to yellow leaves and fallen leaves.

(5) lack of fertilizer, malnutrition will also appear yellow leaves, fertilizer should be replenished in time.

Third, the method of dealing with the yellowing of green apple leaves

1. Generally, the newly bought green apple has an adaptation period of about one month to the new environment, and the bottom yellow leaves are normal. but remember: yellow or dead leaves should not be peeled off directly from the middle of the petiole to avoid direct peeling to cause too much water loss and increase the wound; resulting in the upper leaves will still be yellow.

2. The most suitable growth temperature of green pineapple is 20 ℃-28 ℃ in daytime and 15 ℃-18 ℃ in evening. In winter, green pineapple can survive the winter safely as long as the indoor temperature is not lower than 10 ℃. If the temperature is lower than 5, it is easy to cause yellow leaves and fallen leaves, affecting the growth. Spraying Zhuangtuanling at the right time during the growing period can make the plant stem stout, the leaf thick, the leaf color fresh and tender, and the plant luxuriant.

3. If the leaves are seriously yellow, it is not good to control too much or too little watering. Put the green pineapple in a well-ventilated and bright place.

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