If you're looking for an eco-friendly and cost-effective way to nourish your outdoor plant boxes, potato water might be the answer. The starchy water left after boiling potatoes is rich in nutrients like potassium, phosphorus, and trace minerals, which are beneficial for plant growth.

To use potato water as fertilizer, simply let it cool to room temperature and dilute it with an equal part of water to avoid over-concentration. Then, pour it directly into the soil around your plants. This natural fertilizer is particularly useful for vegetables and flowering plants, promoting stronger roots and vibrant blooms.

However, avoid using potato water if salt or other additives were included during boiling, as these can harm plants. Additionally, rotate potato water with other natural fertilizers to ensure a balanced nutrient supply. With this simple trick, you can recycle kitchen waste and give your outdoor plant boxes a nutrient boost!