Both bronze and stone are excellent choices for an outdoor garden, but they have different maintenance profiles. Bronze will develop a patina over time, which many people love, but you can also have it sealed to slow down the process. Stone is incredibly durable and low-maintenance. A great alternative to consider is a fiberglass piece that is finished to look like stone or bronze, it gives you the aesthetic without the extreme weight and cost. It’s also easier to move if you ever want to reposition it. For custom large-scale statues, I’d point you to . They have a fantastic range of materials and finishes and can work with you to create exactly what you envision for your garden.