150-Gallon Smart Pot Fabric Grow Container - Aeration Plant Bag for Vegetables, Fruits & Flowers - Durable & Reusable Gardening Solution for Outdoor & Indoor Planting

This is an ideal way to pot up trees. Air trims roots and roots can explore entire contents without spiraling the plastic container. Wide base so roots can spread outward naturally. Its about 4x's the room for roots and takes up only 1.5x's the space on my deck. Rains ALOT here during winter so its nice I dont have to worry about waterlogging the roots in plastic pot.