What to do when the leaves of a Radermachera sinica turn yellow? Learn this one trick and it will be lush and green again in no time
Most flower growers like plants that have a flowering season and blaze with brilliant colors, but I alone prefer those lush, emerald-green foliage plants, and Radermachera sinica is one of them. Radermachera sinica is a green plant very well suited to indoor growing, and it can grow from very small to very large and very tall, and Radermachera sinica can even produce pretty little flowers. Many people are willing to keep it at home to beautify their living space, and most importantly, Radermachera sinica does not attract pests very easily, but improper planting can easily turn its leaves yellow. Today the Huacaole editor will work with you to solve the problem of yellowing leaves on Radermachera sinica.
What to do when the leaves of a Radermachera sinica turn yellow? Learn this one trick and it will be lush and green again in no time
What to do when the leaves of a Radermachera sinica turn yellow
There are many causes of yellowing leaves on Radermachera sinica. Many people get them from watering too much or soil that is too compacted, from unsuitable temperature, from insufficient light, from over-fertilizing, from applying raw fertilizer, or from pests and diseases. The editor will explain them one by one for you
1. Insufficient light
Too much or too little light easily causes yellow leaves or leaf drop. Radermachera sinica likes light but does not like harsh sun exposure. Avoid the intense sunlight of summer; in the other seasons it needs full sun. When the summer sun is blazing, you must shade Radermachera sinica. In the other seasons, place Radermachera sinica on a balcony or another spot where it can receive sunlight.
2. Watering too much or soil that is too compacted
The principle for watering Radermachera sinica is not to water until it is dry. When you touch the surface of the potting soil and find it dry, and the sound made by tapping the flowerpot is fairly crisp, it is time to water. When watering, you must water thoroughly until water flows out of the bottom of the pot.
The soil mix for Radermachera sinica should be loose and breathable. It can be prepared in the ratio of garden soil : leaf mold : river sand : decomposed organic fertilizer = 5:3:1:1. The decomposed organic fertilizer can be placed at the bottom of the pot as a base layer, but the fertilizer must not directly touch the roots; keep at least about 3 cm of soil layer between them.
3. Unsuitable temperature
Too high a temperature causes yellow leaves and leaf drop. If the home is closed up for a long time without opening windows for ventilation, the air cannot circulate, and the room will become very dry. This result can also cause the leaves of Radermachera sinica to turn yellow. You must open the windows for ventilation often; it is best to open windows on both sides of the room so that the air forms a cross-flow, and then there will be a lot of fresh air in the room. If the air in the room is too dry, you can spray some water to increase the humidity.
4. Over-fertilizing or applying raw fertilizer
Radermachera sinica does not have a great demand for fertilizer. If you fertilize it too strongly, too frequently, or even apply raw fertilizer, it is very easy to burn the roots and cause yellow leaves and leaf drop. If you have already fertilized a lot, you can water more, which will dilute the fertilizer somewhat, but be careful not to overwater, so as to avoid waterlogging and root rot.
5. Pests and diseases
The common pests of Radermachera sinica are scale insects, mites, aphids and so on, and they can also cause the leaf surface to wither and turn yellow. Before pests occur, we should strengthen ventilation and light transmission and pay attention to the temperature and humidity of the growing environment of Radermachera sinica. If pests have already occurred, then at the early stage of the outbreak you should promptly spray insecticide to nip the pests in the bud.