How to raise hydrangea

I. Culture environment 1. Soil: Hydrangea likes soil rich in humus, and it is best to choose slightly acidic soil with good drainage.

2. Temperature: The suitable temperature for the growth of hydrangea is 18-28℃, and 20℃ is favorable for flowering and growth, and the lowest temperature should not be lower than 5℃.

3. Moisture: Sufficient moisture can make hydrangea grow faster, but don't accumulate water. When the temperature is high and the weather is hot, spray some water on or around the ground to improve the humidity of the air.

4. Fertilization: Hydrangea should be given sufficient nutrients in the vigorous growth period, and fertilized with decomposed pancakes every 15 days, which can make it bloom bigger and promote its better growth.

Second, the mode of transmission 1. Cutting propagation: the cutting length is about 10 cm and the number of nodes is 2-3. Shade and keep warm after cutting in early spring. After cuttage from May to August, it should be placed in a cool place, often sprayed with water to keep it basically moist, and it will take root in about one month.

2. layering propagation: when layering, cut the part buried in the soil, bury it for about 2-3 cm, cover it with a layer of soil, compact and water it, cover it with a film, and take root after one month. When the exposed part of the batten is drawn into 3-4 new branches, it can be properly watered and fertilized to grow better.

3. Common diseases and insect pests 1, common diseases: powdery mildew and leaf spot, pay attention to ventilation, the soil in the basin should not be too wet, and the diseased leaves should be removed in time to reduce the chance of infecting healthy leaves, which can be prevented by spraying 65% zineb wettable powder 600 times.

2. Common pests: aphids and blind stinkbug, which can be sprayed with 40% omethoate EC 1500 times.