The Best Do Metal Raised Garden Beds Get Too Hot References. Fortunately, if you’re using metal raised garden beds (like birdies), your raised bed will not get too hot for your plants. It is usually warm to feel when sitting in the sun.
In fact, many animal feeders are made of galvanized steel — showing how safe the material can be. On warm days, the soil temperature near the edge of the garden may rise slightly, but it is not enough to have any impact on your plants. No warmer, however, than planting your plants up against a hot brick wall or similar.
