Cool How Wide Should My Raised Garden Bed Be Ideas. You'll only be able to plant one to two rows of plants, depending on how much each plant needs to spread out. Six inches is enough to grow lettuce greens, herbs, and plants with very shallow root structures.
The “shelves” are only about seven inches (18 cm) deep. This size works well in small and large spaces alike, and it allows easy access to the plants. Metal raised garden beds are part of what we consider mainframe design.
