Disease and Pest Control of Rhododendron pubescens

Diseases

Black spot

The most common disease of Rhododendron hairy-ribbed is black spot disease, which can cause the leaves of Rhododendron hairy-ribbed to fall prematurely and also has a great impact on the survival rate of Rhododendron hairy-ribbed. The earliest manifestation of black spot disease is on the leaves of the plant. At the beginning, it is small reddish-brown spots. These spots are easily ignored by the owner. Later, they will gradually spread to the main leaves. Affecting the aesthetics is secondary, and affecting development is the most critical. If you want to prevent black spot disease from invading Rhododendron hairy-ribbed, you must cut off the diseased branches and leaves at the beginning, pay attention to ventilation and light transmission, and apply fertilizers regularly to make the leaves of Rhododendron hairy-ribbed have the ability to resist bacteria.

Yellowing disease

In addition to black spot, yellowing is also a common disease. Unlike black spot, it is a non-infectious disease. If your Rhododendron alopecuroides has chlorosis, it must be because you did not fertilize it in time and kept it in alkaline soil. So what are you waiting for? Move your Rhododendron into acidic soil as soon as possible and add some trace elements to it. When it rains, you can collect some rain water and use it to water the Rhododendron hairyii.

Pests

Red Spider

The hairy-ribbed azalea itself will attract some small insects, such as some red spiders, stink bugs or earthworms. These small insects must not be ignored, as they may make the hairy-ribbed azalea sick! Red spider mites can cause the leaves of Rhododendron hairy-ribbed to become scorched and fall off. When taking measures to prevent and control them, you can put some natural enemies, such as ladybugs, on the leaves. Or check the leaves frequently and remove the red spider mites.

Stinky Sister

The impact of the stinking ladybug on the Rhododendron hairy-ribbed. The secretions of the stinking ladybug can cause rust spots on the leaves of the Rhododendron hairy-ribbed. Severe infestation of the stinking ladybug can also affect the flowering of the Rhododendron hairy-ribbed. Therefore, the owner must remove fallen leaves and weeds in time.

I believe that those who have read this article must have learned about some common diseases and pests of Rhododendron hairyii. I believe that with your careful care, your hairy azalea will grow better.