Green Treasure Tree (Radermachera hainanensis) Cultivation Methods and Precautions, Causes of Leaf Drop and Solutions

The Green Treasure Tree has an upright form with abundant branches, and when it blooms, its fragrance fills the air, making it very popular. So how should the Green Treasure Tree be cultivated? What precautions are there? What are some reasons the Green Treasure Tree drops its leaves? How to solve them? Let's take a look together below.

I. Introduction to the Green Treasure Tree

The Green Treasure Tree is also called Hainan Bean Tree (Radermachera hainanensis). It likes sunlight and mainly grows in southern regions. It has well-developed roots and lush leaves, full of vitality, and is very popular. Its name is derived from its appearance and form. This plant has an upright tree form with abundant branches, and when it blooms, its fragrance fills the air, and the flowers on a single inflorescence axis almost all bloom at the same time, forming strings of flower bands gleaming with golden light, very charming, with extremely high ornamental value and garden application prospects.

II. Cultivation Methods and Precautions for the Green Treasure Tree

Cultivation methods:

1. Don't miss the propagation time

Generally speaking, the suitable propagation time for the Green Treasure Tree is from June to August, with June and July being more suitable. The weather is mild, and the temperature is neither too high nor too low. It is easier to take root at this time, and cuttings will do.

2. The soil should be loose, with gravel or ceramsite added on top and bottom

It is not recommended to use nutrient soil. Nutrient soil is loose, but after watering it tends to clump together, which can cause root rot. So place large-grained gravel at the very bottom, add regular soil in the middle, mix in rooting powder, fertilizer, and the like, then spread another layer of gravel on top.

3. Water thoroughly in one go

Do not water every day. It is best to water thoroughly in one go, so the roots do not need watering. At other times, you can wipe the leaf surfaces, or if you have no time to wipe, just spray them with a spray bottle.

4. Mixed fertilizer or nutrient solution

If rooting powder, fertilizer, and the like were added to the soil when planting, then wait a few weeks before adding mixed fertilizer again. Mix it with water and pour it into the soil.

Precautions:

1. Plenty of light but not scorching sun

The Green Treasure Tree needs to be guaranteed plenty of light, but not scorching sun, that is, avoid the times in summer when the sunlight is especially strong. In addition, the Green Treasure Tree is also shade-tolerant, so it is fine if it cannot get frequent light.

2. Pest prevention and control

During the cultivation of the Green Treasure Tree, attention should also be paid to pest prevention and control. These are generally the commonly seen small white and black insects. Just pay attention to light and the addition of insecticide solution.

3. Pay attention to temperature in winter

The last point to note is the suitable temperature for the Green Treasure Tree. Generally speaking, 10-20 degrees is more suitable, so after winter begins, do not place it outdoors. It must be placed indoors.

III. Causes of Leaf Drop in the Green Treasure Tree and Solutions

The Green Treasure Tree is named for its green leaves, but some oversights during the planting process can cause leaf drop. If it starts to show signs of leaf drop, it will certainly give people a big headache. If this situation really occurs, what should we do?

1. Light problem

(1) Cause: First, we should understand that this plant's characteristic is that it likes light. So if its growing environment lacks light, it may very likely cause leggy growth, which will then manifest as leaf drop.

(2) Solution: If this is the cause, then we must adjust the surrounding environment so that it is not kept in a too-dark environment for a long time. We can place it on a drying rack or near a window, so that it can receive scattered light. However, one point to note is that too-strong light is also bad for it.

2. Water problem

(1) Cause: If there is excessive water, it may first cause root rot, and then cause leaf drop. This is also a very possible cause.

(2) Solution: During its vigorous growth period, watering once or twice a week can meet its needs. The frequency does not need to be too high. In addition, the amount of water per watering should not be too large. Also, we should adjust according to the specific condition of the pot soil. If you observe that the pot soil turns white, then you can water a little; if it is still very wet, then do not water for now.

3. Disease problem

(1) Cause: This plant is susceptible to one disease, namely “leaf spot disease.” If it catches this disease, it will also drop leaves.

(2) Solution: First, we must deal with the diseased leaves. Furthermore, we can spray 50 percent carbendazim solution, once every two weeks, for three or four times in succession. In addition, we must strengthen ventilation and light penetration.