Points on Growing Peonies

Peonies are deciduous plants. They need a good rest with winter temperature below 12 degrees Celsius.
Plant in a spot with no more than half shades.
Peonies grow best in fertile, well-aerated and well-drained soil.
Plant at least one metre apart.
Plant deep with joint or graft union at least 15cm below ground.
Water thoroughly but infrequently. One good soaking in every three summer-days is sufficient.
To grow in a pot, the pot should be sheltered from hot dry winds.
Apply fertiliser such as bone meal in the early spring.
Spraying both the plant and ground with Bordeaux mixture regularly controls diseases.
Cut all the leaves and also the drying stems just at the top of a growth bud in mid-autumn.