Everyone knows that you should eat healthy, but it’s not always easy. Fresh and healthy foods are often more expensive than processed foods. When money is tight, sometimes it’s best to just grow your own produce. What if you don’t have room for a garden, though?
When [Matthew] returned home from the 2014 San Mateo Maker Faire, he found himself in a similar situation to many other faire attendees. He saw something awesome and was inspired to build it himself. In this case, it was a wall-mounted hydroponic garden. [Matthew] started out with some basic requirements for his project. He knew which wall he wanted to cover with plants, so that gave him the maximum possible dimensions. He also knew that they may have to remove the garden temporarily to perform maintenance on the wall in the future. And as for what to grow, [Matthew] loves lots of flavor in his foods. He chose to grow herbs and spices.
[Matthew] purchased most of the main components from Amazon and had them shipped to his doorstep. Everything else was found at the local hardware store. The base of the build is an off-the-shelf planter box. The drainage hole in the bottom was plugged up to prevent water from leaking out. A different hole was drilled in the side of the box to allow a garden hose to be mounted to the box. The hose is connected through a float valve, keeping the water level inside the box just right.
[Matthew] then built a frame out of dimensional lumber. The frame ended up being about 4.33 feet wide by 8 feet tall. The boards were fastened together with metal braces and mounting plates. A full sheet of plywood was then nailed to the front of the frame. Thick plastic sheet was then wrapped around the frame and stapled in place.
[Matthew] purchased giant planter pockets to actually hold the plants. He tried stapling them to the front of the frame, but discovered that staples were not strong enough to hold the weight of the plants, soil, and water. He instead used screws and washers.
Next, a submersible pump was mounted inside the bottom planter box. This pump is used to circulate the water and nutrients up to the plants above. Two hoses were connected to the pump and run up the sides of the upper frame. These hoses evenly distribute the water to the plants.
The final step was to mount the unit in place against the wall. [Matthew] didn’t want to screw into the wall and cause any damage. Instead, he placed a couple of bricks inside of the planter box and rested the bottom of the frame on top of those. The top of the frame is essentially hung from a railing up above with some thin steel wire.
The whole unit looks very slick and takes up little space. With some more ingenuity, one could likely build something similar with even more DIY components to save some more money.