*Tip: While you can also use an inverted nursery flat or a plastic food container with holes (basically anything similar with holes that won't corrode), the larger, rounded shape of the drain pipes fills up the bottom of the planter better and takes up more space in the box, resulting in the ability to use less filler or soil than average.
Step 1: Gather the necessary materials. In this case, an SIP was constructed out of a large pontoon boat before it was placed into a lumber housing unit.
Step 3: Pour soil into the planter and cover the entire lengths of the pipes.
*Tip: When you add the soil mix to the planter, be sure to pack it down into the spaces between the pipes to ensure good capillary wicking action.
*Tip: Whether you build your SIP for use directly on the ground or raise it off the floor, it is important that the bed of your planter is flat and level. Otherwise, you are going to end up with uneven distribution of water.
Now, simply plant, water and watch as your new nursery blooms before your very eyes!