1.Best planting time: The best planting time for Paeonia suffruticosa is mid-september to late 10. 2.The best growing soil: tree Peony cultivation soil texture loose, fertile, neutral alkali. 3.Growth humidity requirements: rockii Peony watering to both keep the soil moist, but not too wet, not water for the principle. 4.Optimal growth temperature: chinese tree Peony