The big leaf green apple leaves turn yellow.

Green pineapple should be watered and sprayed to the leaves two or three times a day during the growing season, and the temperature should not be too high or too low. another is that fertilization should not be excessive, and that it cannot be kept in the sun for a long time, nor can it be left without light for a long time. The reason you said may be the lack of light for a long time and too little watering.

The green apple leaves you plant turn yellow, the new ones will turn black and necrotic, and you only water them once a week. I'm afraid it's not a problem of watering too much. Did you leave it in the shade for too long? Although green pineapple is a negative plant, avoid direct sunlight, but like scattered light, indoor cultivation can be placed next to 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 leaf surface disappear, affecting growth, usually to receive four hours of scattered light, green pineapple growth and development is the best. The following is to introduce to you the information of "the conservation of green pineapple" for your reference.

The cultivation and development of green pineapple is the best in loose, slightly acidic and neutral sandy loam soil rich in organic matter. It can be retted with 70% rotten leaves, 20% red soil, 10% rape cake and bone meal. Change the basin every three years. Green turnip negative plants, avoid direct sunlight, like scattered light, more shade-tolerant. Indoor cultivation can be placed next to 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 leaf surface disappear, usually to receive four hours of scattered light, green pineapple growth and development is the best. Green pineapple likes higher air humidity and humid environment. The growth peak of green pineapple in midsummer can spray the air root and leaf surface of green pineapple several times a day, which can not only clean the dust of leaves, benefit the breathing of green pineapple, but also make the leaf color green and green, reduce the leaf temperature and increase the air humidity of the small environment. make the leaves grow better. The basin soil is moist, and when it is found to be white, it can be watered through.

The room temperature is low in winter and the green pineapple is dormant, so it should be watered less and keep the basin soil dry. 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 fallen leaves and affect the growth. The fertilization of green pineapple is mainly nitrogen fertilizer and potassium fertilizer is supplementary. Before the spring green pineapple growth period comes, 0.3% ammonia sulfate or urea solution is applied every 10 days or so, and 0.5 ‰-1 ‰ urea solution is used as foliar fertilizer, which can not only meet the growth needs of green pineapple, but also keep the leaves green and bright. Fertilization should be stopped in winter. Green pineapple is usually propagated by cutting and burying stems. Select the sturdy green vine, cut it into two sections, be careful not to hurt the air root, and then insert it into plain sand or cinder, with a depth of 1 beat 3 of the cuttings, drench enough water and place it in a shaded place, spray water on the leaves or cover with plastic film to moisturize every day, as long as the environment is not less than 20, the survival rate is more than 90%.