Common diseases affecting honeysuckle include brown spot, honeysuckle leaf beetle, aphids, and powdery mildew. The specific prevention and control methods are summarized below, which we hope will be helpful to flower enthusiasts.

　　1. Field Management

　　Loosen the soil, mound soil, water, fertilize, and prune. Fertilize and mound soil at the same time. Water appropriately. Prune overly long, diseased, weak, dead, and downward-extending branches to make the branches grow in clumps and stand upright. The main trunk should be thick and the branches should be evenly spaced. Apply a wound-healing and antiseptic film to the pruning cuts to promote rapid wound healing.

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　　2. Growth period

　　After pruning, new branches will grow. Spraying with a flower-strengthening agent during the bud stage can effectively inhibit vegetative growth, promote bud development, increase petal size, enhance medicinal properties, and allow for timely flower harvesting.

　　3. Winter protection

　　Every autumn, apply winter fertilizer, loosen the soil, kill pests and diseases, apply tree protectant, and spray the ground with a new high-lipid film to retain moisture, fertilizer, heat, and cold, ensuring safe overwintering.

　　I. Honeysuckle Leaf Bee

　　1. Characteristics of damage

　　The larvae of the silver leaf sawfly damage leaves. Newly hatched larvae prefer to crawl onto tender leaves to feed, starting from the leaf edge and feeding inwards, creating neat notches. After consuming the entire leaf, they move to neighboring leaves to feed. In severe cases, they can devour all the leaves of the plant, preventing it from flowering. This not only seriously affects the flower yield of the current year but also delays leaf emergence the following year, causing the affected branches to wither and die.

　　2. Morphological characteristics

　　Adults: Females are 9-10 mm long with a wingspan of 21-22 mm; males are 7-8 mm long with a wingspan of 18-19 mm. The body is bluish-black with a metallic sheen. The antennae are black, with three segments, the third segment being longer; the hairs on the third segment are more prominent in males than in females. The wings are translucent and light brown; the ovipositor is serrated.

　　Egg: Milky white, kidney-shaped, 1.2-1.5 mm long and 0.7-0.8 mm wide.

　　Larva: Body length 22-23 mm, head and forelegs black, body pinkish-red, with a pale green longitudinal stripe along the midline of the back and a golden-yellow longitudinal stripe along the lateral dorsal line. The spiracular lines are pale green. The back of the body has many small black tubercles; the prothorax has 3 rows of 14 tubercles, the mesothorax and metathorax have 3 rows of 16 tubercles, and the abdomen has 2-6 segments with 3 rows of 18 tubercles, the tubercles in the center of the back being larger. Larvae have 5 instars: 1st instar 3.5 mm body length, head width 0.4 mm; 2nd instar 6 mm body length, head width 0.7 mm; 3rd instar 8 mm body length, head width 0.9 mm; 4th instar 12.3 mm body length, head width 1.3 mm; 5th instar 17.4 mm body length, head width 1.7 mm. Pupa: Dark brown, encased in an oblong cocoon.

　　3. Occurrence Pattern

　　The silver leaf sawfly has five generations per year in Sichuan. Mature larvae overwinter as pupae in cocoons in the soil. Adults emerge in early March of the following year, feeding on nectar and honeydew secreted by aphids. Adults are active on sunny days, especially between 12:00 and 15:00. They are strong fliers, capable of flying up to 2 meters off the ground and 10-20 meters horizontally. On cloudy or rainy days, they remain motionless under branches and leaves. Adults begin laying eggs 3-4 days after emergence. The female uses her serrated ovipositor to cut open the leaf margin and lay 1-3 eggs under the epidermis. Each female lays 6-24 eggs. The leaf margin tissue at the ovipositor becomes water-soaked and later turns dark brown. Adult lifespan is 3-14 days. The egg stage lasts 5-14 days with a hatching rate of 84%. The larval stage lasts 10-19.5 days.

　　The larvae cause damage in a scattered manner, mainly harming tender leaves. After feeding, the larvae's head, thorax, and legs gradually turn black, while their bodies remain green, turning pinkish-red after the fourth instar. Larvae molt mostly around 7 AM and in the evening. Once mature, the larvae crawl down the plant, burrowing into the soil or dead leaves at a depth of 0.5-1 cm, spinning cocoons, and pupating inside. The pupal stage for each generation is 7-19.5 days, with the overwintering generation having a pupal stage of 185 days. The first and second generations cause the most damage throughout the year, but they do not harm honeysuckle varieties with thick leaves and long, stiff hairs.

　　4. Prevention and control methods

　　① Manual control: When the number of insects is large, insect cocoons can be dug up under the trees in winter and spring to reduce the source of overwintering insects.

  ② Chemical control: Spray with 90% trichlorfon at a dilution of 1000 times or 25% cypermethrin at a dilution of 1000 times during the larval stage.

　　II. Brown Spot Disease

　　1. Symptoms

　　The pathogen is a deuteromycete that damages leaves, with more severe symptoms in summer. When the disease occurs, irregular brown spots appear on the leaves, brown in the center and dark brown at the edges, accompanied by dark brown mold. In severe cases, the entire leaf turns yellow and falls off.

　　2. Prevention and control measures

　　① After harvesting, clean up the orchard, remove diseased and damaged branches and plants, and burn them in a centralized manner.

　　② In the early stage of the disease, spray with 800-1000 times diluted Bismuth subtilis or 600 times diluted 65% zinc sulfate, once every 7-10 days, for 2-3 consecutive times. In the severe stage of the disease, spray with 2000-3000 times diluted Spray of Bacillus subtilis, which can quickly control and treat the disease.

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　　III. Aphids

　　In hot and rainy environments, it often damages new leaves and vine shoots, causing them to curl and affecting growth. Common treatments include spraying with a 3000-fold dilution of 40% dimethoate emulsion or a 1000-fold dilution of 25% phosmet emulsion.

　　In addition, there are two simpler methods:

　　1. Soak 5 grams of cigarette butts in 70-80 ml of water for 24 hours, rub them slightly, filter out the residue with gauze, and then spray.

　　2. Use a 1:200 solution of laundry detergent (soap solution). To improve the efficacy, you can add a few drops of vegetable oil (do not use animal fat). Stir thoroughly until no oil droplets are visible on the surface, then spray with a sprayer. Alternatively, mix in a little ginger water and spray. The effect is also very good.

　　"Aphid Killer" – add 200 ml of water to each packet and spray for 20-30 minutes to see results.

　　IV. Powdery mildew

　　1. Symptoms

　　It primarily damages the leaves, but sometimes also harms the stems and flowers. Leaf lesions initially appear as small white dots, later expanding into white powdery spots. In the later stages, the entire leaf is covered with a white powdery layer; in severe cases, the leaves turn yellow, deform, and may even fall off. Stem lesions are brown, irregular in shape, and covered with a white powdery coating. Flowers become twisted and fall off in severe cases.

　　2. Characteristics of the disease

　　The pathogen overwinters as ascocarps on diseased plant debris. The following year, the ascocarps release ascospores for primary infection. After infection, conidia are produced on the diseased parts for secondary infection. Warm environments or shady areas between plants promote disease development. Excessive nitrogen fertilizer application and alternating periods of wet and dry conditions exacerbate the disease.

　　3. Prevention and control methods

　　① Select disease-resistant varieties according to local conditions.

　　②Strengthen cultivation management, plant at a reasonable density, and pay attention to ventilation; apply fertilizer scientifically, increase the application of phosphorus and potassium fertilizers to improve the plant's disease resistance; irrigate in a timely manner, and drain water promptly after rain to avoid moisture retention.

　　③ Combine with chemical prevention and control: In the early stage of the disease, spray with 100 grams of 50% colloidal sulfur diluted in 20 kg of water or 2000 times diluted 15% ketone wettable powder.

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　　V. Coffee Tiger Longhorn Beetle

　　Prevention and control measures

　　1. During the spawning period, spray with a 600-1000 times dilution of 50% phosphine emulsifiable concentrate or a 1500 times dilution of 50% phosphine emulsifiable concentrate, once every 7-10 days, for several consecutive applications;

　　2. Cut off about 20 centimeters of the damaged young stems and remove the dead plants, then burn them.

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