All it takes is a water bottle and swiss army knife to make this wonderful self watering container. It operates just like an Earthbox. Its very easy to put together and is very low maintenance. It'll make growing plants so easy you'll want to grow an entire garden.
Step 1: Gathering Supplies
This is a very easy build, and many ways to modify on to it which i will show after. So as for the supplies you'll need.
1. Water Bottle
I suggest getting one that is shaped like an hour glass, they tend to hold up better and provide and excellent base to build upon.
2. Swiss army knife
I used the tiny army knife in this instructable, but I found the larger red army knife better because of its reamer. It makes the hole punching part much easier.
as for the mods, you'll need:
black heavy trash bag
Step 2: Prep Your Bottle
Dump the water out, drink it, or save it so that you start out with an empty bottle. Also, it's not really necessary, but remove the label (makes it look nicer).
Step 3: Cutting The Bottle
Now that your bottle is looking nice and ready, cut the bottle about half way. I cut mine at the top of where the bottle dips, there was a very distinct edge. If your finding it hard to cut a straight line, tape a marker down and spin the bottle where you plan on cutting it. Then you'll have a nice guide line to cut on.
Step 4: Poke Holes
This is where the reamer tool on the knife comes in handy a lot, I had to use the scissors because i lost my good pocket knife just before making this. Poke holes in the cap and about an inch down the top. I punched my holes like the five side of a dice on the cap, then 8 holes just under the cap, and four more below that. You want the holes small enough so that soil doesn't fall through, but large enough to drain water.