If you're looking for a creative and eco-friendly way to keep your outdoor plant boxes hydrated, repurposing old sponges as water reservoirs might be the solution you need. Sponges are excellent at retaining water, and when placed at the bottom of plant boxes, they can slowly release moisture to the roots, reducing the frequency of watering.

To use old sponges effectively, cut them into smaller pieces and layer them beneath the soil. This method is particularly useful for plants that require consistent moisture but are prone to overwatering. Additionally, sponges can improve soil aeration and prevent compaction.

However, ensure the sponges are clean and free from harsh chemicals to avoid harming your plants. This simple DIY hack not only recycles old household items but also promotes sustainable gardening practices. Give it a try and see how your plants thrive with less effort!