In the Czech Republic, creativity and sustainability come together in one of the most unexpected urban farming ideas — growing potatoes inside old ceramic bathtubs. These unused tubs, once headed for the landfill, are being repurposed into efficient micro-gardens placed on city rooftops. Their durable structure, built-in depth, and excellent drainage make them surprisingly ideal for cultivating root vegetables. By filling the tubs with nutrient-rich soil and adding straw to retain warmth, farmer