Banana Peels as Natural Fertilizer 1 Collect banana peels after eating and keep them aside instead of throwing them away. This simple step transforms food waste into a valuable gardening resource. 2 Place the peels in a container filled with water and let them soak for about 48 hours. During this time, the nutrients from the peels gradually infuse into the water. 3 Allow the soaking water to absorb essential elements such as potassium, magnesium, and calcium. These minerals are vital for plant health, supporting stronger stems, greener leaves, and better flowering. 4 After soaking, use the enriched liquid directly to water your plants. Pour it at the base of the plants so the roots can absorb the nutrients efficiently. 5 Repeat this process regularly to provide a natural nutrient boost. It is a cost-free and sustainable alternative to chemical fertilizers, safe for both indoor and outdoor plants. 6 This method helps reduce kitchen waste, supports eco-friendly gardening practices, and keeps your plants healthy and productive over time.