Proper drainage is the unsung hero of successful urban gardening. Before you add soil to your planter boxes, creating an effective bottom layer is crucial for plant health. Start by covering the drainage holes with a permeable barrier. Use landscape fabric, a fine mesh screen, or even a single layer of newspaper. This prevents soil from washing out while allowing water to escape. Next, add a drainage layer using lightweight materials. Horticultural gravel, pebbles, broken pottery shards (crocks), or recycled plastic bottles/containers are excellent choices. This layer should typically be 1-2 inches deep, depending on your planter's depth. For very deep boxes, you can use bulkier, inexpensive fillers like crushed cans or pine cones in the very bottom to save on soil, topped with your drainage material. The key is to create air pockets that allow excess water to move away from plant roots, preventing rot. Avoid using rocks or sand alone, as these can compact and hinder drainage. This simple setup ensures your urban garden thrives with the perfect balance of moisture and aeration.
What should I put in the bottom of my urban planter boxes for drainage before adding soil?
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