Spring flowers have more pests and diseases. In April and May, the following are more serious: Locusts (grasshoppers) Loquats, Biloba, hibiscus, Chinese rose, and honeysuckle are all susceptible to aphids. As temperatures rise, locusts are also increasing and must be controlled. Control methods: 1.40% of omethoate or 50% of imidosulfan are sprayed after 1200-1500 times of water. 2. A small amount of potted flowers can also be sprayed with 70 to 100 times the neutral detergent. Red spider Jasmine, hibiscus, asparagus, rose, dahlia, etc. began to damage from the beginning of April. Control methods: A small number of potted plants are often rinsed with tap water on the back of the leaves, or on the back, or sprayed and boiled with 100 to 150 times the batter water that has been boiled and cooled. After one or two days and then flushed with clean water, it can receive significant results. Scale insects (flower pods) Most scale insects on Magnolia, Rose, Boxwood, and Pittosporum hatch from mid-April to mid-May. Control methods: 1. Manually gently brush off the body before hatching. 2. Diligently inspected and sprayed 40% of omethoate 1000 to 1500 times during the larval hatching period. Blight occurs when the temperature reaches 20 °C, the newly sown flowers, saplings, and some easily rotted flowers are prone to blight when humidity is high. Control methods: 1. Before planting, use 70% of pentachloronitrobenzene 1.5-4 kg per acre evenly in the soil. 2. Control the watering in the young seedlings and do not make the soil wet. 3. When the diseased seedlings are found at the beginning, water 1% ferrous sulfate or 200-400 times 50% Daisendamine solution, and water 2 to 4 kg of potion per square meter. The rust estrus rust disease is prone to massive violations of flowers and trees after the April and May rains. Rose rust is infested when the roses are in bloom. Control methods: 1. When the rose sprouts, it is timely to remove the first germinating yellow disease bud and destroy the source of the infectious disease. 2. In the initial period of infestation, spraying 15% triadimefon 700 to 1000 times. Powdery mildew rose, Impatiens balsamina and Astragalus powdery mildew mostly occur in May and June, and yellow leaves, dead leaves, and tender shoots are easily caused in summer. Control methods: 1. Pay attention to the ventilation of the flowers. 2. Less nitrogen fertilizer, more phosphorus and potassium fertilizer. 3. Spray 15% of triadimefon 700 to 1000 times once in the initial stage of the infection. Frozen Sardine,Frozen Sardines Sardinefrozen,Frozen Sardine Fish,Sardine Whole Round Frozen Zhoushan City Shuangying Aquatic Products Co., Ltd.  , https://www.shuangying-aquatic.com