Euonymus diseases are often harmful to quite adult plants. This is very disappointing, since all the efforts of the gardener can always be nullified in 1-2 weeks. The article assumes all pests and diseases of euonymus, which are most often found in the central and southern regions of our country. All measures for the prevention and protection of shrubs are described taking into account modern realities. An example of such means of chemical protection that will not harm the garden and the health of people around them. Please note that when carrying out measures for the control of pests and diseases of the euonymus on your personal plot, do not poison beneficial insects and birds. Less chemistry, more - natural products.
Look at the main diseases of the euonymus in the photo, which are presented in large quantities in the form of illustrations to the article.
Euonymus diseases and control
The following describes the main diseases of euonymus and the fight against them with simple and affordable tools for every gardener.
Drying of spindles
The causative agent is the mushroom Phomopsis laschii v. Hohn. - causes necrosis of the bark of the branches. The affected bark grows brown, shrinks, cracks, by the autumn small, flat fruit bodies, pycnidia, are formed in it. Spores overwhelm neighboring branches, where leaves begin to grow and dry in summer.
Control measures. Removal of dry branches and dried bushes, preventive spraying in the spring with Bordeaux mixture or its substitutes.
Tuberculosis bark necrosis
Control measures. Removal of dry branches and dried bushes, preventive spraying of copper-containing preparations in spring.
The causative agent is the mushroom Ascochyta evonymicola Allesch. - causes the appearance of large rust-brown spots on both sides of the sheet. The spots turn white with time, but there is always a rusty brown border. Pycnids form by autumn on both sides of the leaf.
Control measures. Collection and disposal of fallen leaves, spraying spring Bordeaux mixture or its substitutes.
Euonymus pests and how to treat them
It is time to get acquainted with the wormwood pests that are most often recorded in private gardens. It is also told about how to treat pests of euonymus so as not to harm the plants themselves.
Beechwood ermine mole
Beechwood ermine mole Yponomeuta cognatellus Hb. - silver-white butterfly with rows of black dots on the wings. Caterpillar length 16-18 mm, dirty yellow-green color. The head, legs, chest shield are black, there are numerous black specks on the body, dashes and warts with hairs. Younger caterpillars hibernate under the egg shield, spring young leaves are mined, then they are eaten, leaving only the main veins. At the end of June, the caterpillars pupate in a web in cocoons. Butterflies fly from mid-July, females lay eggs on the bark under the shields, covering them with a gray-brown liquid.
Control measures. Collection and destruction of nests with caterpillars and cocoons. Spraying in the spring with one of the preparations: Fitoverm, Kinmiks, Fufanon, Spark, Inta-Vir.
Aphid euonymus brown
Aphid eurasian brown Aphis cognatella Jones. - the small sucking insect of brown color with a wax raid. They suck from the underside of young leaves, causing the leaf blades to wrap slightly and turn yellow. Eat on one plant, do not migrate to other cultures. Hibernate eggs under the scales of the kidneys. With a large number of aphids, the leaves turn yellow and fall prematurely.
Control measures. Preventive spraying in the spring and eradicating in the summer of one of the drugs: fitoverm, kinmiks, fufanon, spark, Inta-Vir.