Common Pest and Disease Control Methods for Japanese Maple Bonsai

Growing Techniques Jan 1, 1970 0 views

Japanese Maple Bonsai, Common Pest and Disease Control for Japanese Maple

The Japanese maple (Acer palmatum) is native to the provinces in the middle and lower reaches of the Yangtze River basin in China, and is also found in Shandong and Zhejiang. It is distributed in Japan as well. It is a common ornamental tree species in gardens, and also grows wild in mountainous areas. It prefers light and a warm, humid climate, is not very cold-tolerant, and thrives in humus-rich, fertile, moist acidic or neutral soil. When grown in pots, it should be protected from the western sun and direct sunlight, and given appropriate shade during the high-temperature period in summer.

What Is a Japanese Maple

The Japanese maple, also known as the chicken-claw maple (Acer palmatum), is a deciduous small tree or tree of the genus Acer in the family Aceraceae, with an umbrella-shaped crown and an elegant, graceful appearance. The bark is smooth. The twigs are reddish-brown. The leaves are opposite, palmately 7-9 lobed, with a truncate to heart-shaped base. The lobe tips are caudate, and the margins have irregular sharp teeth or double sharp teeth; young leaves are densely covered with soft hairs, while mature leaves are smooth and hairless. In autumn the red leaves are like brocade, very pleasing to the eye. The flowers are polygamous, forming corymbs of small purplish-red flowers that open in April. The samaras spread at an obtuse angle and curve upward, maturing in October, brownish-yellow.

Pest and Disease Control for Japanese Maple

Common diseases of the Japanese maple include anthracnose, leaf spot and black spot, which can be controlled by spraying Bordeaux mixture or 70% mancozeb wettable powder at 600 times dilution. Common pests
include white grubs, mole crickets, scarab beetles, stinging caterpillars, aphids, longhorn beetles and heart-boring borers. Control of white grubs, mole crickets, etc. Soil-dwelling pests such as white grubs and mole crickets gnaw at the roots and stems of seedlings, causing the seedlings to wither and die. You can use 50% phoxim emulsifiable concentrate or 48% chlorpyrifos emulsifiable concentrate at 1000 times dilution, mixed with fine soil and broadcast, or used to water the roots.

For the Japanese maple, prevention should be the priority. Spray with hymexazol or dimethomorph or Aimi emulsifiable concentrate + ningnanmycin + abamectin + beta-cyhalothrin or chlorpyrifos or acetamiprid + organosilicon at 3000 times dilution; when there is no disease, apply once every 15-20 days, and when the disease is severe, apply once every 5-7 days. Be careful to alternate the chemicals used.

Control of scarab beetles, stinging caterpillars, aphids, etc. Pests that feed on branches and leaves, such as scarab beetles, stinging caterpillars, aphids and red spider mites, often eat the leaves of red maples, causing poor growth of the seedlings. You can spray with abamectin, Bukuai or omethoate at 800-1000 times dilution. Control of longhorn beetles, heart-boring borers, etc. Trunk-boring pests such as longhorn beetles and heart-boring borers.

Japanese Maple Bonsai, Common Pest and Disease Control for Japanese Maple

What Is a Japanese Maple

How to Make a Japanese Maple Bonsai: Key Points for Growing Japanese Maple

Many people want to make a bonsai of their own, but often don't know where to start. So here, the editor will introduce a method for making a maple bonsai, the making of a Japanese maple potted plant, hoping it will be helpful to everyone.

[Plant Profile]

Chinese Name: Japanese Maple

Scientific Name: Japanese Maple

Alternative Names: Chicken-claw Maple, Maple Tree

Family: Aceraceae

Genus: Acer

Origin and Distribution: Shandong, southern Henan, Jiangsu, Zhejiang, Anhui, Jiangxi, Hubei, Hunan, Guizhou and other provinces; also distributed in countries such as Korea and Japan.

Morphological Characteristics: A deciduous small tree or tree, with an umbrella-shaped crown and an elegant, graceful appearance. The bark is smooth. The twigs are reddish-brown. The leaves are opposite, palmately 7-9 lobed, with a truncate to heart-shaped base. The lobe tips are caudate, and the margins have irregular sharp teeth or double sharp teeth; young leaves are densely covered with soft hairs, while mature leaves are smooth and hairless. In autumn the red leaves are like brocade, very pleasing to the eye. The flowers are polygamous, forming corymbs of small purplish-red flowers that open in April. The samaras spread at an obtuse angle and curve upward, maturing in October, brownish-yellow.

Japanese Maple Growing Techniques

Ecological Characteristics of the Japanese Maple

It prefers a warm, humid and semi-shaded environment. It is cold-tolerant, not tolerant of waterlogging, relatively drought-tolerant, and afraid of strong direct sunlight. The optimum growth temperature is 15-25°C, and in winter it can withstand low temperatures of -8°C. The soil should be deep, fertile and well-drained sandy loam; it is also tolerant of acidic and calcareous soils.

Propagation Methods for the Japanese Maple

VI Sowing: Collect seeds in October, dry them slightly and remove the wings, then sow in autumn or stratify in moist sand, and sow in February in spring. Cover with 1 cm of soil; germination occurs 30-40 days after sowing. Seedlings need shading and moisture retention. Seedlings can reach 30-40 cm in height in the same year.

VII Grafting: Mainly used for cultivated varieties; the rootstock is 2-3 year old Japanese maple. In March in spring, carry out twig grafting, performing cleft grafting or side grafting when the leaf buds of the rootstock swell; in August in summer, carry out bud grafting, mainly single-bud side grafting, which has a high survival rate. Seedlings can be obtained in the same year.

VIII Layering: Carried out in October, using the air layering method. Perform ring barking 20-25 cm from the tip of the branch, and wrap with leaf mold and plastic film. Seedlings can be obtained in the following spring.

Key Points for Growing Japanese Maple

Japanese maple should be transplanted after leaf fall in autumn and winter or before bud break in spring. Large seedlings should be moved with a soil ball, and planted in a fertile, semi-shaded, moist site. Potted plants should be repotted after the leaves are removed in late August, placed in a semi-shaded, moist spot, and fertilized 1-2 times to promote lush branches and leaves. After frost, the leaves turn yellow and red; keep the plant indoors for care, and leaf fall will be delayed, which can extend the leaf-viewing period.

Pest and Disease Control

During the cultivation of Japanese maple, it is often harmed by anthracnose, leaf spot and black spot. Usually Bordeaux mixture or 70% mancozeb wettable powder at 600 times dilution can be sprayed. Pests include stinging caterpillars, bagworms, aphids and citrus longhorn beetles, which can be killed by spraying fenitrothion at 1500 times dilution.

The above is the relevant introduction in this article. I believe that after reading it, you have gained a simple understanding of this. If you need more, you can continue to follow Yihao Home Network to learn more information.

Common Pest and Disease Control Methods for Japanese Maple Bonsai

Japanese Maple Bonsai, Common Pest and Disease Control for Japanese Maple

How to Make a Japanese Maple Bonsai: Key Points for Growing Japanese Maple

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