How large of a planter do I need for a tree?
Size – Trees that can grow in containers need deep pots (at least 20-24 inches in diameter) for root development. Larger trees require even bigger planters to accommodate their root systems so allow for plant growth when choosing your planters. Large planters can house big plants and even small trees or shrubs, but require a large amount of soil to fill. Fillers like newspapers, empty water bottles, and bricks are budget-friendly alternatives to using soil. Create pockets of air with sealed bottles or upside-down planters to take up more space.