This project has been in existence since about 2006, and merely began as a clean-up project on my friend's farm. The Hildred farm has been running for about 70 years, and has had numerous vehicles come and go, though the tires have stayed around. When they inquired about disposing of them, the cost at that time to dispose of a tire was $3 PER POUND! As anyone who has flipped a tire knows, the disposal of a single tire could break the bank at that price. Something had to be done, and thus from necessity was born the Tire Garden! We've developed these mostly through trial and error, and though we've sold a few we want to teach you how to build them if you want to. The Tire Garden Homepage
The Tire Garden Facebook page
After the first few years of growing in these, we realized that not bending down was not only comfortable, it made weeding enjoyable! This made fewer weeds, which meant bigger plants. Because of this, it's very useful for those who don't want to bend down to weed but still like to grow a garden, like your parents or grandparents. Although our first gardens were made from tractor tires, we had a few semi truck tires around too. These turned out to be movable with the fork lift, and therefore pretty handy to give away as presents (yes we asked first). We filled the bottom 2/3 with mulch created as waste from a pallet recycler, filled the top with locally produced compost, and wrapped a "skin" on the outside made from off-cuts of the hardwood and lumber industries. When we found out that one of the world's largest tire dumps which is visible from space, was about an hour from us, it occurred to us that we could perhaps call these neat little gardens "99% repurposed materials"!
Materials:Tires, any size but each tire must be within 1" of the tires on either side of it in the stack(I'll explain later)
Tractor tires: 75" and up
Semi tires: ~36"
Car tires: ~18" (good for replacing those rotten whiskey barrels in your front yard!)
2" stainless screws
Mulch for the bottom 2/3 of each stack (your city probably sells it from trimming operations)
NOTE: If you're making tractor tire gardens, they don't have the support to use mulch in the bottom. Take up some space with a few short logs, and see if you can find "fill dirt" which is cheaper than topsoil
Planting soil for the top of the stack (local compost is great)
Skin material, which can be:
Paint, look for old 1/2 cans at a hazardous materials redirection sites
Wood scraps, such as: crown cuts from sawmills, straight liner cut offs from hardwood processing, old fence boards, or pallets (if you're desperate, they're hard to disassemble)
Seeds or plants
Ladybugs [optional]
If you're using wood scraps, you'll need a way to attach them. We have a pallet bander, which works beautifully, and that's a great option if you can borrow it from your shipping department. Black ratchet straps will work plenty fine, although the buckle might be in the way. A winch and small aircraft cable would work as well, as it can be crimped out of the way. As a last resort, you can screw the boards to the tires.
****IMPORTANT**** You must cover the tires with something (anything) light colored to prevent overheating of the soil and the plants.
Plastic pallet if you want to be able to move it later with a fork lift [optional]
Tools you'll need:
Jigsaw with a lot of carbide wood blades for cutting the sidewalls out
Chop saw
Wheelbarrow and shovel
Pallet bander
Tape measure
Chalk
6' Level or string level and string
Corded drill (no really, putting screws in rubber will destroy the trigger circuitry on a cordless)
****IMPORTANT****
Measure all your tires before you pick them! One of the things you'll notice at the tire shop is that the tires have no common diameter. In semi truck tires alone we've measured up to a foot in diameter. In order to stack properly, a tire must match the one below it in diameter by within an inch, less if possible.
Here how i made my vertical vegetable garden, starting from used big water bottles as planters. An automatic watering system keep the right moisture, collecting water in excess, using power from pv panels and a little wind turbine (vawt)
The green wall is composed by 72 water bottles cut and placed upside-down on a wooden shelf. 
A while ago I found a disposed hard stone polished kitchensink top. I carried this treasure home, although it was HEAVY and I didn't know what to do with it yet, but a creative person doesn't have junk lying around, only new ideas.
Well, as I said. I used a very nice 180x40 cm's polished kitchen counter-top out of hard stone. I found it in the garbage. Every month or so I like to dumpster-dive in my street when my neighbors dispose there treasures. Usually it's quite a goldmine (I even found some original screen-prints of some famous artists. Being an artist and art teacher myself I knew what they were. I've sold them for a few hundred euro's!).
Beans are a practical and healthy addition to any garden, but they grow best when they have something to climb. Sure, you could buy a trellis, but it's extremely cheap to build your own.All you really need are some long poles and twine. Michelle Reynolds at Made+remade suggests bamboo, but long dowel rods, or even PVC, would probably work just as well (though they wouldn't look as nice). Basically, you need to tie together a few tripod-like structures with the rods, and hang two additional rods across the top and bottom of the installation. Once everything is secure and firmly planted in your garden, run a single long strand of twine in a zig zag pattern across the entire structure.Once you're done, wait for your bean plants to sprout, and then manipulate them onto the loops of twine to "train" them to climb. In no time, the whole structure should be filled with the edible products of your own backyard garden. For some great pictures and a step by step guide, be sure to click through the source link.Make a Simple Bean Trellis for Your Garden | Made+remade
Storing shovels, rakes, and all the other tools used in the garden can sometimes be a bit of a challenge. An artistic flare is often missing. 
We built a shed in the corner of our yard to replace the ugly tin shed that was poorly placed.
I moved from a house with a huge back yard to a place with a pretty nice sized balcony. As much as I love to garden, space was going to be a challenge as well as dealing with potted plants. I needed my herb garden (because, who doesn't NEED fresh herbs?) but I had no desire for little pots to be taking up ground space. Solution...build UP! So here is my lovely vertical garden made from an upcycled wooden pallet, some recycled pots, and metal wire. The entire thing ended up costing me about $30. 
If you purchase small flowers or herbs from your local nursery or garden center, you know they always come in terrible, cheap, black plastic containers. So, first thing first...make it cute! Get different pots of different sizes and colors, throw some potting soil in there and transplant your baby plants to them. If you are starting from seed, this will bring color to your garden from day one! The different colors bring life to any garden.