Shop for Outdoors at The Home Depot. Think big (and tall) when it comes to your raised garden bed. With the Greenes Tall Tiers Dovetail Raised Garden Bed kit you can construct a garden with heights of 14.5 in. for the top tier and 10.5 inches for the lower tiers. That means great soil depth and a lot of growing room for your favorite plants, vegetables, or flowers. You'll love the functionality, the look, and the ease of assembly of this kit. To put the frame together, just slide the boards into the corner joints. There’s no better way to start your garden growing to great heights.