1, illumination temperature: During the cultivation of Spiraea, the illumination and temperature should be ensured. Spiraea can be kept in a position with sufficient sunlight, which ensures normal photosynthesis and is conducive to growth and flowering. Pay attention to the light intensity when you see it, so as to avoid burning plants by strong light. Spiraea likes warmth and grows well at 20 -25℃. The temperature should be raised above 0℃ in winter.

2. Loose soil: Suitable soil should be provided for breeding, which can be cultivated in loose soil rich in trace elements, and the soil should be loosened regularly to maintain air permeability.

3. Water and fertilizer application: After the Spiraea is planted, it can be watered for the second time, and it is usually watered regularly to keep the soil moist, and the water is easy to rot the roots. Spiraea likes fertilizing, and topdressing regularly during the growing period. In the vigorous growth period, it is required to apply decomposed cake fertilizer and water 3-4 times a month, apply phosphorus and potassium fertilizer 2-3 times in flowering period, and overwintering fertilizer 1 time in late autumn, preferably decomposed manure or manure.

4, pruning branches: spring is suitable for pruning, timely pruning dead branches, too dense branches, weak branches, aging branches.

5. Precautions: After the rainstorm, it may lead to root rot, so drainage should be done in time. Use 1000 times mancozeb or 800 times chlorothalonil to irrigate roots and spray leaves.

Spiraea distribution

Spiraea is distributed in Mongolia, Japan, Korea, Siberia of the Soviet Union and southeastern Europe, and is cultivated in Liaoning, Inner Mongolia, Hebei, Shandong and Shanxi in China.