Causes and solutions of yellow leaves of Hemerocallis

Day lily is a common potted flower, its leaves are flat and linear, the leaf shape is wide, and the ornamental is good, but once its leaves appear yellowing, it shows that its health is relatively poor. So what is the cause of the yellowing of hemerocallis leaves? How to solve it? Let's get to know it with the editor.

1. Lack of light

Day lilies like sunshine and are more resistant to shade, but if they are maintained in a light-deficient environment for a long time, their respiration and photosynthesis will be blocked due to lack of work, resulting in the loss of green and yellow leaves and serious plant death.

Solution: the need to timely transfer the yield of day lilies from the lack of work in the dark environment, put it in a brightly lit environment for maintenance, when the leaves return to normal, you can plant them in the sun. Do not move directly from the dark to the sun, which may be counterproductive and require Hemerocallis to adapt to the new environment.

2. Soil consolidation

In the process of planting Hemerocallis, if the soil used is not loose and the drainage is not smooth, then after a period of watering and fertilization, the soil will agglomerate, so that the growth and development of the root system will not only be hindered, but also cause root hypoxia and asphyxiation. Yellow leaf is only one of the lighter symptoms, causing root death in serious cases, and the aboveground plants will gradually wither.

Solution: in the process of planting Hemerocallis, no matter what the soil is, you should pay attention to turning the soil, which can not only avoid soil consolidation, but also prevent germs from overwintering in the soil. If it is potted Hemerocallis, it is best to change the pot once every two years.

3. Less fertilization

In the process of planting Hemerocallis, it is generally necessary to apply 3-4 feet of fertilizer every year to meet its nutrient needs. If it is thin fertilizer, it often needs to be applied every 15-20 days. If the soil itself is not fertile, and if there is no timely fertilization or too little fertilization, then the leaves of Hemerocallis will inevitably turn yellow.

Solution: it is necessary to apply fertilizer reasonably during the growing period of Hemerocallis. Generally, it can be fertilized once a month, and the principle of applying thin fertilizer frequently is adopted. the concentration of each fertilization can be slightly lower, which can not provide sufficient nutrients and can enhance the physique of Hemerocallis. Improve its resistance to diseases and insect pests.

4. Diseases and insect pests

Hemerocallis is not plain sailing in the growth process, aphids, red spiders, leaf blight, rust and other diseases and insect pests will cause its leaves yellowing, but also lead to slow plant growth. In severe cases, the whole plant dies, which is one of the biggest threats to the growth of Hemerocallis.

Solution: the choice of diseases and insect pests in Hemerocallis must be the first time to control, usually for drug spraying, at the same time to remove the branches and leaves invaded by diseases and insect pests to avoid mutual transmission between plants.

The above is the introduction of the causes and solutions of the yellow leaves of Hemerocallis. I hope I can help you. If you want to know more about it, please follow us.