What to do when the dragon boat flower grows insects? disease and pest control of the dragon boat flower / killing aphids with tobacco ash

Dragon boat flower, a very beautiful ornamental plant, it not only has a long flowering period, but also has a beautiful flower shape, but also has a rich color, which is deeply loved by flower friends. Many flower friends plant dragon boat flowers at home, but for some reason, there are often some worms, which is distressing, so what about the dragon boat flowers with worms? The following is the pest control of dragon boat flower, very comprehensive, you must see if you love flowers.

First, the dragon boat flower long worm, uses the medicine to spray

As a beautiful plant, many flower friends raise dragon boat flowers at home, but if we do not raise them according to the breeding method of dragon boat flowers, or if they are not operated properly, it will grow worms and get sick. Flower friends must be very worried! As for the dragon boat flower bug how to do, in fact, it is very simple, we first determine which kind of bug, and then solve the problem. In the prevention and control of diseases and insect pests of dragon boat flowers, the editor talks about insect pests and diseases respectively.

(1) Diseases and insect pests of dragon boat flowers, 3 insect pests

Shell insects, red spiders, aphids

1. Scale insects

Harmful site: this insect is one of the main pests of dragon boat flower, it mainly harms young leaves and sucks the juice of flowers.

Symptoms of damage: the leaves of dragon boat flowers changed from green to grayish green and finally turned to yellow. in serious cases, the branches and leaves were covered with shell insects, causing the whole plant to die.

Solution: when there are few scale insects, they can be scraped directly or picked out with toothpicks; if the density of scale insects is high, they can be sprayed with 50% marathon and 40% dimethoate 0.1% solution. As soon as shell insects occur, they do great harm, and prevention is the main way to use them in daily life.

2. Red spider

Damage site: one of the main insect pests of the dragon boat flower, which mainly harms the back of the leaves and survives by sucking the sap of the dragon boat flower leaves.

Symptoms of damage: the plant will become malnourished and there may be symptoms of yellowing or even shedding of the leaves of dragon boat flowers.

Control method: after determining the insect, rinse the whole plant with large water, and then spray special insecticides, such as 2000 times of triclofenac EC, spray several times more.

3. Aphids

Harm site: indoors, aphids are the main insect pests of dragon boat flowers, which mainly harm leaves and suck the sap of newly drawn branches and leaves.

Symptoms of damage: the leaves are rigid, which will affect the normal growth of the plant after the beginning of spring. The flowers are very small or abnormal after flowering.

Control methods: when a small number of aphids, tobacco dust and plant ash can be sprinkled on the insect body and leaves, about 1-2 hours later, and then rinse with clean water; when there are many aphids, spray 2.5% fish rattan essential oil 1200 times.

(2) Diseases and insect pests of dragon boat flower, 3 diseases

Leaf spot, anthracnose, coal pollution

About the dragon boat flower leaf long worm, read the above content, I believe we all know to deal with it! However, in addition to being attacked by insects, the disease also harms the dragon boat flower all the time. It is understood that there are three main diseases of the dragon boat flower: leaf spot, anthracnose and coal pollution. The specific symptoms and control methods are as follows:

1. Leaf spot

Damage site: leaf spot is a fungal disease, which mostly occurs in the cold weather period at the end of autumn. it is one of the main diseases of dragon boat flower, endangering the leaves of the plant.

Symptoms: the leaves appear light yellow and reddish yellow spots, and then expand into a round or oval shape; if the environment is relatively humid, black granular substances may appear on the disease spots, and the leaves will dry up and fall off in the later stage.

Prevention and treatment: after the disease is found, we should remove the residual water in the diseased leaves in time to avoid too much water. In severe cases, use 1000-1500 times of demulsified oil for prevention and control, or 50% carbendazim wettable powder, spray 2-3 times every 7-15 days, after several times can be effective.

2. Anthrax

Damage site: the disease is one of the main diseases of the dragon boat flower, it mainly harms the leaves, and the pathogen overwinters on the diseased part or the remnant of the diseased leaves.

Symptoms: there are nearly round or irregular round spots on the edge of the leaf. With the severity of the disease, the color of the spot will become dark brown and spread around. At this time, the center of the lesion is grayish white and the edge is crimson, which is easy to identify.

Prevention and treatment methods: when diseased leaves are found, remove them immediately to reduce the source of the disease; before the disease, spray 25% of carbon tetralin wettable powder 500 times, about 10 days spray once, spray 3-4 times basically good.

3. Coal pollution disease

Damage site: another disease of dragon boat flower, which harms branches and leaves.

Symptoms: dark brown stains appeared in the branches and leaves, and then gradually expanded, forming a large area of black soot-like bacteria layer, affecting the photosynthesis of the plant, resulting in the dragon boat flower can not grow normally.

Prevention and treatment: when diseased branches and leaves are found, you can wash or burn them with 1000 times carbendazim solution. The disease is mainly prevention, usually we should strengthen indoor ventilation, in order to reduce the humidity of the greenhouse air, so as not to spread the disease.

With regard to the prevention and control of diseases and insect pests of dragon boat flowers, the editor has introduced this. I believe that if you encounter worms or illness in the future, you should know how to do it! Generally speaking, in the process of growing up, diseases and insect pests are inevitable, so for unnecessary trouble, flower friends should keep in mind the above diseases and prevention methods.

Prevention and control of diseases and insect pests of dragon boat flower

Leaf spot and anthracnose are common, and can be sprayed with 1000 times of acetic acid solution. Insect pests are harmful to shell insects, which can be sprayed with turpentine mixture 10 times.

Cultivation of Dragon Boat Flower and Control of Diseases and insect pests

Dragon boat flower, also known as Yingdanhua, originated in southern China. Like high temperature, humid and sunny environment, not cold-resistant, semi-shade-resistant, requires rich humus, loose, fertile acidic soil, winter temperature is not less than 0 degrees Celsius.

Reproduction: mainly by sowing and cutting propagation. Sowing, collecting seeds in winter, sowing in spring the following year, germinating 20-25 days after sowing, and transplanting 3-4 pairs of leaves. Cuttings can be carried out from May to October, with the best from June to July. Select semi-lignified branches, 10-15 cm long, cut in sand bed, and take root after 40-50 days.

Cultivation: the dragon boat flower should be planted in a place with deep soil layer and plenty of sunny. the pot should be changed every two years, and the diseased branches and weak branches should be cut off. Fertilize once a month during the growing period. Seedling planting, when the seedling height of 30 cm, should be heart-picking, to promote multiple lateral branches. Keep away from the cold in winter.

Diseases and insect pests: leaf spot and anthracnose are common, and can be sprayed with 1000 times of acetic acid solution, an antimicrobial agent. Insect pests are harmful to shell insects, which can be sprayed with turpentine mixture 10 times.

Application: Dragon boat flower has beautiful plant shape, dense flowering, rich flowers and colors and long flowering period. Planted in the open field in the south, suitable for courtyards, hotels and scenic spots. Potted plants are especially suitable for window sill, balcony and guest room furnishings.