Why is the middle and lower reaches of the Yangtze River not suitable for planting peony?

The middle and lower reaches of the Yangtze River are located in the southern region, with a lot of precipitation. In July and August, affected by subtropical high, it is prone to summer drought. Most of the middle and lower reaches of the Yangtze River are acidic red soil with poor fertility.

The suitable growth environment of peony is:

1. Soil quality: Peony is suitable for loose and fertile loam with deep soil layer. However, the fertility of red soil in the middle and lower reaches of the Yangtze River is poor.

2. Soil properties: Peony is suitable to grow in neutral or neutral slightly alkaline soil, and the middle and lower reaches of the Yangtze River are acidic red soil.

3. Temperature: Peony is not resistant to high temperature, but high temperature weather often occurs in July and August in the middle and lower reaches of the Yangtze River.

4, precipitation: peony should be dry and not wet. But there is more precipitation in the middle and lower reaches of the Yangtze River.