Rectangular Plastic Pots 4 Amazon.com : 3QT Potting Soil Mix for Indoor Plants Contains Perlite, Peat Moss, Coco Coir & Rice Charcoal, Natural & Organic Material with Well Draining, Light & Aerated Texture for Healthy Roots Buildable Moss Pole Rooting Starter Set for Climbing Plants Leafy Cove Planting bare root Peonies , Im planting young Peony bare roots. Its the same technique when planting into pots, beds and borders. They are very hardy and only require a shallow hole for planting