‌"By utilising banana peels, gardeners can provide their hydrangeas with the necessary elements for healthy growth while also promoting sustainability through recycling organic materials. "One of the standout features of using banana peels as fertiliser is their ability to offer long-lasting nutrition. The slow breakdown of banana peels in the soil gradually releases potassium, providing sustained nourishment to plants over time. Article continues below"When it comes to applying the banana fertiliser to hydrangeas, dilution is key. It is recommended to dilute the concentrated banana fertiliser by mixing one part of the fertiliser with five parts of water before application.