This metal raised garden bed makes growing your favorite vegetables, flowers, and other greenery easy on your back and knees while supporting your plant's growth and giving your garden a nice pop of color. Raised garden beds improve soil nutrition and moisture drainage for beautiful blooms. Galvalume steel is made from zinc, aluminum, and silicon and is designed to withstand the elements outdoors. It is recommended to put mulch, rocks, or other lining at the bottom of the bed before gardening as these raised planters are bottomless.