Diseases and Pests of Black Leaf Alocasia and Their Control

The harm of gray mold on black leaf Guanyin lotus

Gray mold can cause black spots to appear on the leaves of the black-leaf Alocasia odora, or black mold spots to grow, affecting the beauty of the leaves. In severe cases, the leaves will gradually wither and then fall off.

Prevention and treatment methods

When gray mold occurs in black-leaf Alocasia, in the early stage of the disease, it can be prevented and controlled by spraying 1000 times diluted 59% thiophanate wettable powder.

Stem rot of black leafed Alocasia

When black-leaf Alocasia grows in a high temperature and high humidity environment, it is prone to stem rot.

Stem rot will cause the root and rhizome of the plant to gradually rot, affecting the normal growth of the plant.

Prevention and treatment methods

You can provide appropriate shade to lower the temperature, and spray water on the plants to maintain the humidity of the plants, which can also reduce the temperature.

In the early stage of the disease, you can also use 1000 times diluted 70% thiophanate-methyl wettable powder for spraying for prevention and control.

Black leaf Guanyin lotus root cutting pests

The root cutting pest of black leaf Alocasia odora mainly harms the new leaves and roots of Alocasia odora. This pest will devour the leaves and roots of black leaf Alocasia odora, causing the leaves to stop growing or become missing and the roots to become missing, thereby affecting the growth of the plant and even causing death.

Prevention and treatment methods

When this kind of disease and pest appears, it is necessary to prevent and control it in time. You can use Miller, Snail Killer, spray dichlorvos and poison bait prepared with rice bran to lure and kill them.

Alternatively, you can prune the plants and use scissors to cut off the parts that have been infected by insects to prevent the disease from spreading to other healthy parts.

Aphids of black leaf lotus

When black-leafed Alocasia infests with aphids, they can spread mosaic disease, which can affect the growth of the leaves and cause them to gradually wither and fall off.