If the lower leaves turn yellow, it may be due to normal metabolism, which causes the lower leaves to age and turn yellow. This kind of situation does not need to worry excessively, is a kind of normal phenomenon, only needs to trim off the yellow leaf, the remnant leaf in time, also can reduce the nutrient consumption.
Zebra Rohdea japonica likes semi shade environment and can't bear strong light. If it is under direct light, it will cause the leaves to appear scorched edge or even turn yellow as a whole. In different seasons, we should pay attention to the control of light, shade more than 60% in summer, light intensity in winter is small, at least shade 40%
Application of water and fertilizer is also a very important factor in growth. Too little application of water and fertilizer will affect absorption, leading to weak growth and yellow leaves. If water and fertilizer are applied too much, the roots will be hard to absorb and the leaves will turn yellow. Need reasonable application, adjust the dosage according to the situation.
When the temperature is lower than 5 ℃, the leaves will turn yellow. In winter to move to the room in time, facing the sun, the temperature is kept above 10 ℃.
