Choosing the right size planter box is crucial for the health and longevity of your shrubs or small trees in an urban setting. A container that's too small restricts root growth and stresses the plant, while one that's excessively large can lead to waterlogged soil and root rot. Start by considering the plant's mature size. For most shrubs, a planter at least 18-24 inches in depth and width is a good minimum. For small trees, aim for containers that are at least 24-30 inches deep and equally wide to accommodate the root ball with room to grow. Always prioritize drainage; ensure your planter has adequate holes. The material matters too—lightweight fiberglass or resin is ideal for rooftops, while heavier wood or ceramic offers stability at ground level. Remember to account for future growth; repotting a large plant is difficult. Selecting a planter that allows for 2-3 years of root development is a smart investment for a thriving urban green space.
How do I choose the right size urban planter boxes for shrubs or small trees?
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