Prevent and Cure Plant Diseases and Insect Pests

Diseases on branches or trunk

When the rot layer is found on the surface phloem, branches perished and ulcer situation, or there are rot spots on twigs, Bordeaux mixture should be mist sprayed on the diseases surface, scratch the rotten tissues.

Leaves diseases

Chlorosis disease

The chlorosis disease of trees is a common and serious disease. When the green leaves turn into yellowish brown color not caused by the autumn season, it is possible to be the chlorosis disease. The Ferroinsulfate solution in 0.1 to 0.2 concentrations should be sprayed above the leaves’ surfaces.

Leaf spot disease

The leaf spot disease makes leaves crimp and wither away uncommonly. Bordeaux mixture helps to release the disease via being mist sprayed on the diseases surface. Diseased leaf should be picked off as soon as possible to against the infection.

Powdery Mildew

Leaf defoliation situation remind the bonsai owner to check whether the plant has been infected by powdery mildew. It is another kind of common disease is often found on bonsai plants. Wave beauty sulfur mixture with 0.3 to 0.5 concentrations should be sprayed in mist above the leaf surfaces.

Root diseases

Coccoiol insect harm:

Scale insect harm varies plant species. This insect soaks up the myron from the branches result to the branches and leaves of the plant withered and yellow, early deciduous. One of the control methods is to kill it with artificial brush by person. It is also possible to use 40% dimethoate ec 1000~ 1500 times solution.

Control of aphids:

There are various aphids in the world. The general hazard to blade result in crimp prolapse, dry and fall off. How to control: general spray weekly above leaves with 40% dimethoate diluted by 2000~3000 times water solution.