When it comes to outdoor plant boxes, drainage holes are a critical factor for plant health. Without proper drainage, excess water can accumulate, leading to root rot and other issues. Most plants thrive in well-draining soil, making drainage holes essential for outdoor containers.

If your plant box lacks drainage, you can drill holes yourself or use a layer of gravel at the bottom to improve water flow. However, natural materials like wood may degrade faster with constant moisture, so proper sealing is recommended.

For succulents or drought-resistant plants, drainage is even more crucial to prevent waterlogging. Conversely, some moisture-loving plants may tolerate less drainage, but it’s still best to ensure some airflow.

In summary, outdoor plant boxes generally need drainage holes for optimal plant growth. If you’re unsure, choose containers with pre-drilled holes or modify them to keep your plants healthy and thriving.