Each of these diy wooden planters includes plans, so you can make your own easily! click on the button or image to go to the full tutorial. diy planter box with trellis. the base of this planter box is big enough for a 2 or 3 gallon pot, so all you have to do is drop it in and watch it grow!. Lazy guy diy this raised planter box plan will give you everything you need to have a successful raised vegetable garden. there are three areas for plants along with separate areas for composting. the compost feeds the surrounding plants, giving them the nutrients they need to grow. there is also room for hanging plants at the top of the structure..