Pest and disease control of red plumeria

Pest and disease control of red plumeria

Diseases

The first is called "angular leaf spot," which is a fungal disease. This disease mainly affects the leaves of the plant. It is more common in spring and becomes more serious in July and August. In the early stage of the disease, we can observe some dark spots appearing on the leaves. If the condition continues to get worse, the spots may connect into irregular shapes with dark edges and dark brown inside. To treat this disease, we must first improve the living environment of the plants, such as replacing containers and substrates in time, applying fertilizers rich in elements such as N, P, K, etc. The next step is spraying the pesticide. We can choose Bordeaux solution with a concentration of 0.5% and spray it once every week or ten days.

The second disease is "powdery mildew", which is also a fungal disease. This disease is more likely to occur if the plant grows in an environment with high temperature, high humidity and poor ventilation for a long time. We can easily infer its symptoms from its name, which is the appearance of some white powdery substance on the leaves. We can choose 50 percent concentration of 800 times methyl thiophanate for prevention and control, spraying it once every ten days or so, generally two to three times in a row will be enough.

Pests

The first one is "red spider", which we may be more familiar with. Many plants may be harmed by it. In order to deal with it, we can use 100 to 200 times the solution of diazinon for prevention and control.

The second type is called "scale insects", which are also quite common. In order to completely eliminate them, we can use cypermethrin powder to spray them.

<<:  Disease and Pest Control of Peony

>>:  Disease and Pest Control of Meiguanlan

Recommend

Cultivation methods and precautions of Schefflera variegated

1. The habit of this plant (1) First of all, it l...

Is the iron begonia poisonous?

1. Is it toxic? The thorn balsam is poisonous. It...

What fruits are there in Xiamen?

1. Mango There are many mango trees planted in Xi...

What should I do if the roots of the algae bell jade are rotten?

Causes of root rot in Algae Bell Jade To a certai...

The history of the development of preserved flowers

The development of preserved flowers in Japan Fro...

Guava sowing time and method (with maintenance knowledge)

1. Sowing time The best time to sow guava is from...

What is the meaning of the peace fruit

1. Origin of Peace Apple It originally originated...

Sunflower seeds, how many days does it take for sunflower to germinate

1. Sunflower seeds Sunflower seeds are generally ...

Does Black Prince bloom?

When does it bloom? Some Black Prince succulents ...

How to propagate hydrangea by cuttings?

Hydrangea macrophylla, also known as shade hydran...

The main value of California poppy

The main value of California poppy: ornamental Th...

When is the best time to transplant the old crow persimmon?

When transplanting the old crow persimmon, you mu...

How to grow daffodils

Cultivation Techniques of Narcissus in Open Field...